./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL --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 6fcbb6774587cda7a5d573623a9a47b3e351563c8bea7eebdf86bc25d20b8061 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:01:10,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:01:10,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:01:10,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:01:10,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:01:10,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:01:10,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:01:10,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:01:10,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:01:10,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:01:10,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:01:10,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:01:10,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:01:10,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:01:10,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:01:10,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:01:10,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:01:10,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:01:10,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:01:10,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:01:10,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:01:10,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:01:10,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:01:10,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:01:10,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:01:10,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:01:10,171 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:01:10,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:01:10,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:01:10,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:01:10,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:01:10,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:01:10,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:01:10,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:01:10,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:01:10,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:01:10,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:01:10,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:01:10,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:01:10,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:01:10,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:01:10,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:01:10,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:01:10,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:01:10,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:01:10,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:01:10,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:01:10,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:01:10,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:01:10,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:01:10,217 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:01:10,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:01:10,217 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:01:10,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:01:10,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:01:10,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:01:10,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:01:10,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:01:10,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:01:10,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:01:10,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:01:10,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:01:10,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:01:10,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:01:10,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:01:10,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:01:10,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:01:10,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:01:10,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:01:10,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:01:10,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:01:10,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:01:10,221 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:01:10,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:01:10,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:01:10,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:01:10,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fcbb6774587cda7a5d573623a9a47b3e351563c8bea7eebdf86bc25d20b8061 [2021-11-19 05:01:10,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:01:10,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:01:10,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:01:10,564 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:01:10,565 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:01:10,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-19 05:01:10,650 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/data/299248a16/b1aff5ac5e8c49f5ae475492f85307ed/FLAGc629abc2c [2021-11-19 05:01:11,230 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:01:11,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-19 05:01:11,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/data/299248a16/b1aff5ac5e8c49f5ae475492f85307ed/FLAGc629abc2c [2021-11-19 05:01:11,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/data/299248a16/b1aff5ac5e8c49f5ae475492f85307ed [2021-11-19 05:01:11,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:01:11,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:01:11,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:01:11,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:01:11,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:01:11,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:11" (1/1) ... [2021-11-19 05:01:11,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348de842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:11, skipping insertion in model container [2021-11-19 05:01:11,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:11" (1/1) ... [2021-11-19 05:01:11,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:01:11,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:01:11,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2021-11-19 05:01:11,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2021-11-19 05:01:11,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2021-11-19 05:01:11,913 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2021-11-19 05:01:11,924 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2021-11-19 05:01:11,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2021-11-19 05:01:11,940 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2021-11-19 05:01:11,957 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2021-11-19 05:01:11,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2021-11-19 05:01:11,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2021-11-19 05:01:11,995 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2021-11-19 05:01:12,179 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:01:12,190 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:01:12,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8891,8904] [2021-11-19 05:01:12,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12143,12156] [2021-11-19 05:01:12,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13299,13312] [2021-11-19 05:01:12,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13955,13968] [2021-11-19 05:01:12,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15434,15447] [2021-11-19 05:01:12,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16090,16103] [2021-11-19 05:01:12,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17074,17087] [2021-11-19 05:01:12,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19370,19383] [2021-11-19 05:01:12,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20029,20042] [2021-11-19 05:01:12,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21011,21024] [2021-11-19 05:01:12,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22802,22815] [2021-11-19 05:01:12,354 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:01:12,372 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:01:12,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12 WrapperNode [2021-11-19 05:01:12,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:01:12,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:01:12,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:01:12,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:01:12,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,508 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1788 [2021-11-19 05:01:12,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:01:12,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:01:12,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:01:12,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:01:12,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,528 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:01:12,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:01:12,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:01:12,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:01:12,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (1/1) ... [2021-11-19 05:01:12,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:01:12,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:01:12,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:01:12,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:01:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:01:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:01:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:01:12,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:01:12,852 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:01:12,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:01:14,280 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:01:14,304 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:01:14,304 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 05:01:14,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:14 BoogieIcfgContainer [2021-11-19 05:01:14,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:01:14,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:01:14,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:01:14,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:01:14,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:01:11" (1/3) ... [2021-11-19 05:01:14,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206ec3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:01:14, skipping insertion in model container [2021-11-19 05:01:14,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:12" (2/3) ... [2021-11-19 05:01:14,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206ec3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:01:14, skipping insertion in model container [2021-11-19 05:01:14,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:14" (3/3) ... [2021-11-19 05:01:14,322 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-19 05:01:14,328 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:01:14,328 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-19 05:01:14,399 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:01:14,406 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:01:14,407 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-19 05:01:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 345 states have (on average 1.8376811594202898) internal successors, (634), 356 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 05:01:14,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:14,450 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] [2021-11-19 05:01:14,451 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)] === [2021-11-19 05:01:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:14,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1863160701, now seen corresponding path program 1 times [2021-11-19 05:01:14,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:14,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161039436] [2021-11-19 05:01:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:14,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:14,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:14,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161039436] [2021-11-19 05:01:14,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161039436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:14,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:14,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:01:14,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822923696] [2021-11-19 05:01:14,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:14,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:01:14,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:14,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:01:14,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:01:14,923 INFO L87 Difference]: Start difference. First operand has 357 states, 345 states have (on average 1.8376811594202898) internal successors, (634), 356 states have internal predecessors, (634), 0 states have call successors, (0), 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 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:15,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:15,471 INFO L93 Difference]: Finished difference Result 569 states and 972 transitions. [2021-11-19 05:01:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:01:15,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-19 05:01:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:15,501 INFO L225 Difference]: With dead ends: 569 [2021-11-19 05:01:15,502 INFO L226 Difference]: Without dead ends: 293 [2021-11-19 05:01:15,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:01:15,517 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 1450 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:15,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 362 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:01:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-19 05:01:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-11-19 05:01:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 282 states have (on average 1.301418439716312) internal successors, (367), 292 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 367 transitions. [2021-11-19 05:01:15,591 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 367 transitions. Word has length 58 [2021-11-19 05:01:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:15,592 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 367 transitions. [2021-11-19 05:01:15,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 367 transitions. [2021-11-19 05:01:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-19 05:01:15,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:15,596 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] [2021-11-19 05:01:15,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:01:15,597 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)] === [2021-11-19 05:01:15,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:15,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1094505509, now seen corresponding path program 1 times [2021-11-19 05:01:15,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:15,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440863292] [2021-11-19 05:01:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:15,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:15,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:15,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440863292] [2021-11-19 05:01:15,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440863292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:15,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:15,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:01:15,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297450824] [2021-11-19 05:01:15,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:15,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:01:15,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:01:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:01:15,736 INFO L87 Difference]: Start difference. First operand 293 states and 367 transitions. 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) [2021-11-19 05:01:16,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:16,026 INFO L93 Difference]: Finished difference Result 496 states and 637 transitions. [2021-11-19 05:01:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:01:16,029 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 [2021-11-19 05:01:16,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:16,034 INFO L225 Difference]: With dead ends: 496 [2021-11-19 05:01:16,035 INFO L226 Difference]: Without dead ends: 273 [2021-11-19 05:01:16,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:01:16,040 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 933 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:16,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 211 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:01:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-19 05:01:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-11-19 05:01:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 262 states have (on average 1.3053435114503817) internal successors, (342), 272 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) [2021-11-19 05:01:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 342 transitions. [2021-11-19 05:01:16,086 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 342 transitions. Word has length 59 [2021-11-19 05:01:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:16,087 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 342 transitions. [2021-11-19 05:01:16,087 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) [2021-11-19 05:01:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 342 transitions. [2021-11-19 05:01:16,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 05:01:16,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:16,091 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] [2021-11-19 05:01:16,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:01:16,091 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)] === [2021-11-19 05:01:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 568036411, now seen corresponding path program 1 times [2021-11-19 05:01:16,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:16,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993626691] [2021-11-19 05:01:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:16,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:16,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:16,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993626691] [2021-11-19 05:01:16,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993626691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:16,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:16,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:01:16,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137832637] [2021-11-19 05:01:16,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:16,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:01:16,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:01:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:01:16,209 INFO L87 Difference]: Start difference. First operand 273 states and 342 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:16,396 INFO L93 Difference]: Finished difference Result 476 states and 611 transitions. [2021-11-19 05:01:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:01:16,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-19 05:01:16,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:16,399 INFO L225 Difference]: With dead ends: 476 [2021-11-19 05:01:16,399 INFO L226 Difference]: Without dead ends: 254 [2021-11-19 05:01:16,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:01:16,401 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 905 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:16,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 200 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:01:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-19 05:01:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-19 05:01:16,422 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) [2021-11-19 05:01:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 320 transitions. [2021-11-19 05:01:16,423 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 320 transitions. Word has length 60 [2021-11-19 05:01:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:16,424 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 320 transitions. [2021-11-19 05:01:16,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 320 transitions. [2021-11-19 05:01:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 05:01:16,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:16,427 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] [2021-11-19 05:01:16,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:01:16,428 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)] === [2021-11-19 05:01:16,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:16,429 INFO L85 PathProgramCache]: Analyzing trace with hash -715476529, now seen corresponding path program 1 times [2021-11-19 05:01:16,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:16,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963462024] [2021-11-19 05:01:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:16,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:16,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:16,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963462024] [2021-11-19 05:01:16,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963462024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:16,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:16,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:01:16,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223710137] [2021-11-19 05:01:16,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:16,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:01:16,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:16,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:01:16,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:01:16,520 INFO L87 Difference]: Start difference. First operand 254 states and 320 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) [2021-11-19 05:01:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:16,703 INFO L93 Difference]: Finished difference Result 457 states and 588 transitions. [2021-11-19 05:01:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:01:16,703 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 [2021-11-19 05:01:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:16,706 INFO L225 Difference]: With dead ends: 457 [2021-11-19 05:01:16,706 INFO L226 Difference]: Without dead ends: 246 [2021-11-19 05:01:16,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:01:16,709 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 858 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:16,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 196 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:01:16,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-19 05:01:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-11-19 05:01:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3191489361702127) internal successors, (310), 245 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 310 transitions. [2021-11-19 05:01:16,732 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 310 transitions. Word has length 61 [2021-11-19 05:01:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:16,734 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 310 transitions. [2021-11-19 05:01:16,734 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) [2021-11-19 05:01:16,735 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 310 transitions. [2021-11-19 05:01:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 05:01:16,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:16,740 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] [2021-11-19 05:01:16,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:01:16,740 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)] === [2021-11-19 05:01:16,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:16,743 INFO L85 PathProgramCache]: Analyzing trace with hash 207205371, now seen corresponding path program 1 times [2021-11-19 05:01:16,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:16,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882664315] [2021-11-19 05:01:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:16,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:16,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:16,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:16,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882664315] [2021-11-19 05:01:16,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882664315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:16,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:16,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:01:16,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435244439] [2021-11-19 05:01:16,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:16,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:01:16,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:01:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:17,000 INFO L87 Difference]: Start difference. First operand 246 states and 310 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:17,736 INFO L93 Difference]: Finished difference Result 580 states and 772 transitions. [2021-11-19 05:01:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:01:17,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 05:01:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:17,742 INFO L225 Difference]: With dead ends: 580 [2021-11-19 05:01:17,744 INFO L226 Difference]: Without dead ends: 492 [2021-11-19 05:01:17,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:01:17,747 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1566 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:17,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1566 Valid, 877 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:01:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-19 05:01:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 246. [2021-11-19 05:01:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 245 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) [2021-11-19 05:01:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 309 transitions. [2021-11-19 05:01:17,787 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 309 transitions. Word has length 62 [2021-11-19 05:01:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:17,788 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 309 transitions. [2021-11-19 05:01:17,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:17,788 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 309 transitions. [2021-11-19 05:01:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 05:01:17,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:17,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:17,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:01:17,790 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -201639857, now seen corresponding path program 1 times [2021-11-19 05:01:17,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:17,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322609498] [2021-11-19 05:01:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:17,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:17,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:17,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322609498] [2021-11-19 05:01:17,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322609498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:17,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:17,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:01:17,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877983141] [2021-11-19 05:01:17,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:17,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:01:17,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:17,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:01:17,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:17,985 INFO L87 Difference]: Start difference. First operand 246 states and 309 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:18,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:18,802 INFO L93 Difference]: Finished difference Result 554 states and 738 transitions. [2021-11-19 05:01:18,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:01:18,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 05:01:18,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:18,806 INFO L225 Difference]: With dead ends: 554 [2021-11-19 05:01:18,806 INFO L226 Difference]: Without dead ends: 488 [2021-11-19 05:01:18,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:01:18,808 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1847 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:18,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1847 Valid, 1005 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:01:18,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-19 05:01:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 246. [2021-11-19 05:01:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3106382978723403) internal successors, (308), 245 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) [2021-11-19 05:01:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 308 transitions. [2021-11-19 05:01:18,833 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 308 transitions. Word has length 62 [2021-11-19 05:01:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:18,833 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 308 transitions. [2021-11-19 05:01:18,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 308 transitions. [2021-11-19 05:01:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 05:01:18,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:18,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:18,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:01:18,836 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1938423665, now seen corresponding path program 1 times [2021-11-19 05:01:18,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:18,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414341533] [2021-11-19 05:01:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:18,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:18,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:18,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414341533] [2021-11-19 05:01:18,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414341533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:18,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:18,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:01:18,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161618323] [2021-11-19 05:01:18,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:18,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:01:18,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:18,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:01:18,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:01:18,988 INFO L87 Difference]: Start difference. First operand 246 states and 308 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:19,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:19,742 INFO L93 Difference]: Finished difference Result 582 states and 771 transitions. [2021-11-19 05:01:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:01:19,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 05:01:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:19,746 INFO L225 Difference]: With dead ends: 582 [2021-11-19 05:01:19,747 INFO L226 Difference]: Without dead ends: 488 [2021-11-19 05:01:19,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:01:19,748 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1705 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:19,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1705 Valid, 1101 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:01:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-19 05:01:19,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 246. [2021-11-19 05:01:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3063829787234043) internal successors, (307), 245 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) [2021-11-19 05:01:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 307 transitions. [2021-11-19 05:01:19,774 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 307 transitions. Word has length 62 [2021-11-19 05:01:19,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:19,774 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 307 transitions. [2021-11-19 05:01:19,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:19,775 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 307 transitions. [2021-11-19 05:01:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 05:01:19,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:19,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:19,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:01:19,777 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:19,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1233191565, now seen corresponding path program 1 times [2021-11-19 05:01:19,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:19,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739049606] [2021-11-19 05:01:19,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:19,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:19,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:19,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739049606] [2021-11-19 05:01:19,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739049606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:19,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:19,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 05:01:19,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414525843] [2021-11-19 05:01:19,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:19,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:01:19,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:19,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:01:19,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:01:19,924 INFO L87 Difference]: Start difference. First operand 246 states and 307 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:20,718 INFO L93 Difference]: Finished difference Result 481 states and 626 transitions. [2021-11-19 05:01:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:01:20,718 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 05:01:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:20,722 INFO L225 Difference]: With dead ends: 481 [2021-11-19 05:01:20,722 INFO L226 Difference]: Without dead ends: 476 [2021-11-19 05:01:20,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:01:20,724 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1388 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:20,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 1333 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:01:20,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-19 05:01:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 246. [2021-11-19 05:01:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.3021276595744682) internal successors, (306), 245 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) [2021-11-19 05:01:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 306 transitions. [2021-11-19 05:01:20,750 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 306 transitions. Word has length 62 [2021-11-19 05:01:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:20,751 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 306 transitions. [2021-11-19 05:01:20,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 306 transitions. [2021-11-19 05:01:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 05:01:20,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:20,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:20,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:01:20,757 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash 679005537, now seen corresponding path program 1 times [2021-11-19 05:01:20,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:20,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742984536] [2021-11-19 05:01:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:20,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:20,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:20,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742984536] [2021-11-19 05:01:20,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742984536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:20,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:20,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 05:01:20,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939344062] [2021-11-19 05:01:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:20,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:01:20,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:01:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:01:20,903 INFO L87 Difference]: Start difference. First operand 246 states and 306 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:21,341 INFO L93 Difference]: Finished difference Result 485 states and 606 transitions. [2021-11-19 05:01:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 05:01:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-19 05:01:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:21,344 INFO L225 Difference]: With dead ends: 485 [2021-11-19 05:01:21,344 INFO L226 Difference]: Without dead ends: 352 [2021-11-19 05:01:21,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:01:21,345 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1447 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:21,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 457 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:01:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-19 05:01:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 246. [2021-11-19 05:01:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.297872340425532) internal successors, (305), 245 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) [2021-11-19 05:01:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 305 transitions. [2021-11-19 05:01:21,375 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 305 transitions. Word has length 62 [2021-11-19 05:01:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:21,375 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 305 transitions. [2021-11-19 05:01:21,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 305 transitions. [2021-11-19 05:01:21,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 05:01:21,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:21,377 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] [2021-11-19 05:01:21,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:01:21,377 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2031197374, now seen corresponding path program 1 times [2021-11-19 05:01:21,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:21,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807619736] [2021-11-19 05:01:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:21,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:21,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:21,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807619736] [2021-11-19 05:01:21,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807619736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:21,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:21,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:01:21,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643905159] [2021-11-19 05:01:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:21,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:01:21,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:21,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:01:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:21,517 INFO L87 Difference]: Start difference. First operand 246 states and 305 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:22,199 INFO L93 Difference]: Finished difference Result 539 states and 709 transitions. [2021-11-19 05:01:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:01:22,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 05:01:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:22,204 INFO L225 Difference]: With dead ends: 539 [2021-11-19 05:01:22,204 INFO L226 Difference]: Without dead ends: 480 [2021-11-19 05:01:22,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:01:22,206 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 946 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:22,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 962 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:01:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-19 05:01:22,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 246. [2021-11-19 05:01:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2936170212765958) internal successors, (304), 245 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 304 transitions. [2021-11-19 05:01:22,235 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 304 transitions. Word has length 64 [2021-11-19 05:01:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:22,235 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 304 transitions. [2021-11-19 05:01:22,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 304 transitions. [2021-11-19 05:01:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 05:01:22,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:22,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:22,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:01:22,239 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash -119000272, now seen corresponding path program 1 times [2021-11-19 05:01:22,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:22,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194263596] [2021-11-19 05:01:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:22,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:22,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:22,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194263596] [2021-11-19 05:01:22,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194263596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:22,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:22,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:01:22,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910180994] [2021-11-19 05:01:22,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:22,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:01:22,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:22,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:01:22,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:22,409 INFO L87 Difference]: Start difference. First operand 246 states and 304 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:23,140 INFO L93 Difference]: Finished difference Result 559 states and 737 transitions. [2021-11-19 05:01:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:01:23,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 05:01:23,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:23,144 INFO L225 Difference]: With dead ends: 559 [2021-11-19 05:01:23,144 INFO L226 Difference]: Without dead ends: 488 [2021-11-19 05:01:23,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:01:23,146 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 858 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:23,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1251 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:01:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-19 05:01:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 246. [2021-11-19 05:01:23,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2893617021276595) internal successors, (303), 245 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 303 transitions. [2021-11-19 05:01:23,174 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 303 transitions. Word has length 64 [2021-11-19 05:01:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:23,174 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 303 transitions. [2021-11-19 05:01:23,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 303 transitions. [2021-11-19 05:01:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 05:01:23,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:23,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:23,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 05:01:23,176 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:23,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:23,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1520301075, now seen corresponding path program 1 times [2021-11-19 05:01:23,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:23,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311160443] [2021-11-19 05:01:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:23,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:23,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:23,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311160443] [2021-11-19 05:01:23,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311160443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:23,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:23,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:01:23,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358911122] [2021-11-19 05:01:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:23,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:01:23,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:01:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:23,310 INFO L87 Difference]: Start difference. First operand 246 states and 303 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:24,040 INFO L93 Difference]: Finished difference Result 536 states and 704 transitions. [2021-11-19 05:01:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:01:24,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 05:01:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:24,044 INFO L225 Difference]: With dead ends: 536 [2021-11-19 05:01:24,044 INFO L226 Difference]: Without dead ends: 480 [2021-11-19 05:01:24,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:01:24,046 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 867 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:24,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 1116 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:01:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-19 05:01:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 246. [2021-11-19 05:01:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2851063829787235) internal successors, (302), 245 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:24,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 302 transitions. [2021-11-19 05:01:24,077 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 302 transitions. Word has length 64 [2021-11-19 05:01:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:24,078 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 302 transitions. [2021-11-19 05:01:24,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 302 transitions. [2021-11-19 05:01:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 05:01:24,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:24,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:24,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:01:24,080 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:24,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:24,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1508633347, now seen corresponding path program 1 times [2021-11-19 05:01:24,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:24,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186186209] [2021-11-19 05:01:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:24,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:24,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:24,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186186209] [2021-11-19 05:01:24,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186186209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:24,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:24,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:01:24,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810576344] [2021-11-19 05:01:24,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:24,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:01:24,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:01:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:24,198 INFO L87 Difference]: Start difference. First operand 246 states and 302 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:24,964 INFO L93 Difference]: Finished difference Result 485 states and 625 transitions. [2021-11-19 05:01:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:01:24,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 05:01:24,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:24,971 INFO L225 Difference]: With dead ends: 485 [2021-11-19 05:01:24,971 INFO L226 Difference]: Without dead ends: 480 [2021-11-19 05:01:24,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:01:24,972 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1441 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:24,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 1252 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:01:24,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-19 05:01:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 246. [2021-11-19 05:01:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2808510638297872) internal successors, (301), 245 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 301 transitions. [2021-11-19 05:01:25,002 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 301 transitions. Word has length 64 [2021-11-19 05:01:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:25,003 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 301 transitions. [2021-11-19 05:01:25,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:25,003 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 301 transitions. [2021-11-19 05:01:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-19 05:01:25,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:25,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:25,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 05:01:25,005 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:25,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1008042549, now seen corresponding path program 1 times [2021-11-19 05:01:25,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:25,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705588564] [2021-11-19 05:01:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:25,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:25,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:25,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705588564] [2021-11-19 05:01:25,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705588564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:25,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:25,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:01:25,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383259566] [2021-11-19 05:01:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:25,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:01:25,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:25,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:01:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:25,113 INFO L87 Difference]: Start difference. First operand 246 states and 301 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:25,880 INFO L93 Difference]: Finished difference Result 505 states and 652 transitions. [2021-11-19 05:01:25,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:01:25,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-19 05:01:25,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:25,884 INFO L225 Difference]: With dead ends: 505 [2021-11-19 05:01:25,884 INFO L226 Difference]: Without dead ends: 488 [2021-11-19 05:01:25,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:01:25,885 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1413 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:25,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 1308 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:01:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-19 05:01:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 246. [2021-11-19 05:01:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2765957446808511) internal successors, (300), 245 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) [2021-11-19 05:01:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 300 transitions. [2021-11-19 05:01:25,916 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 300 transitions. Word has length 64 [2021-11-19 05:01:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:25,916 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 300 transitions. [2021-11-19 05:01:25,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 300 transitions. [2021-11-19 05:01:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:01:25,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:25,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:25,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 05:01:25,919 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash 370944031, now seen corresponding path program 1 times [2021-11-19 05:01:25,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:25,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134575339] [2021-11-19 05:01:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:25,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:26,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:26,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134575339] [2021-11-19 05:01:26,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134575339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:26,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:26,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:01:26,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366630042] [2021-11-19 05:01:26,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:26,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:01:26,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:26,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:01:26,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:01:26,436 INFO L87 Difference]: Start difference. First operand 246 states and 300 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:27,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:27,895 INFO L93 Difference]: Finished difference Result 621 states and 775 transitions. [2021-11-19 05:01:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:01:27,896 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-19 05:01:27,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:27,899 INFO L225 Difference]: With dead ends: 621 [2021-11-19 05:01:27,900 INFO L226 Difference]: Without dead ends: 563 [2021-11-19 05:01:27,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:01:27,904 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1879 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:27,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1879 Valid, 2178 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:01:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-11-19 05:01:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 242. [2021-11-19 05:01:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 232 states have (on average 1.271551724137931) internal successors, (295), 241 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 295 transitions. [2021-11-19 05:01:27,951 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 295 transitions. Word has length 66 [2021-11-19 05:01:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:27,951 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 295 transitions. [2021-11-19 05:01:27,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:27,952 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 295 transitions. [2021-11-19 05:01:27,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:01:27,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:27,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:27,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 05:01:27,954 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:27,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1409573117, now seen corresponding path program 1 times [2021-11-19 05:01:27,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:27,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113251351] [2021-11-19 05:01:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:27,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:28,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:28,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:28,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113251351] [2021-11-19 05:01:28,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113251351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:28,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:28,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 05:01:28,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005150395] [2021-11-19 05:01:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:28,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:01:28,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:28,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:01:28,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:01:28,233 INFO L87 Difference]: Start difference. First operand 242 states and 295 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:29,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:29,043 INFO L93 Difference]: Finished difference Result 704 states and 920 transitions. [2021-11-19 05:01:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 05:01:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-19 05:01:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:29,047 INFO L225 Difference]: With dead ends: 704 [2021-11-19 05:01:29,047 INFO L226 Difference]: Without dead ends: 591 [2021-11-19 05:01:29,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:01:29,049 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 2278 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:29,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2278 Valid, 1268 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:01:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-19 05:01:29,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 183. [2021-11-19 05:01:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 176 states have (on average 1.2670454545454546) internal successors, (223), 182 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 223 transitions. [2021-11-19 05:01:29,084 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 223 transitions. Word has length 66 [2021-11-19 05:01:29,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:29,085 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 223 transitions. [2021-11-19 05:01:29,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:29,085 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 223 transitions. [2021-11-19 05:01:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:01:29,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:29,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:29,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 05:01:29,088 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:29,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1787778406, now seen corresponding path program 1 times [2021-11-19 05:01:29,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:29,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329709676] [2021-11-19 05:01:29,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:29,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:29,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:29,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329709676] [2021-11-19 05:01:29,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329709676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:29,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:29,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:01:29,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965560782] [2021-11-19 05:01:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:29,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:01:29,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:29,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:01:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:01:29,463 INFO L87 Difference]: Start difference. First operand 183 states and 223 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:30,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:30,392 INFO L93 Difference]: Finished difference Result 487 states and 629 transitions. [2021-11-19 05:01:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:01:30,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-19 05:01:30,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:30,395 INFO L225 Difference]: With dead ends: 487 [2021-11-19 05:01:30,395 INFO L226 Difference]: Without dead ends: 429 [2021-11-19 05:01:30,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:01:30,397 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1566 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:30,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1566 Valid, 1387 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:01:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-19 05:01:30,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 179. [2021-11-19 05:01:30,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 173 states have (on average 1.260115606936416) internal successors, (218), 178 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:30,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 218 transitions. [2021-11-19 05:01:30,432 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 218 transitions. Word has length 66 [2021-11-19 05:01:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:30,433 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 218 transitions. [2021-11-19 05:01:30,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:30,433 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 218 transitions. [2021-11-19 05:01:30,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:01:30,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:30,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:30,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:01:30,435 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:30,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1127331716, now seen corresponding path program 1 times [2021-11-19 05:01:30,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:30,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216498882] [2021-11-19 05:01:30,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:30,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:30,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:30,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216498882] [2021-11-19 05:01:30,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216498882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:30,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:30,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:01:30,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183123789] [2021-11-19 05:01:30,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:30,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:01:30,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:30,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:01:30,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:01:30,782 INFO L87 Difference]: Start difference. First operand 179 states and 218 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:31,628 INFO L93 Difference]: Finished difference Result 432 states and 547 transitions. [2021-11-19 05:01:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:01:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-19 05:01:31,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:31,631 INFO L225 Difference]: With dead ends: 432 [2021-11-19 05:01:31,631 INFO L226 Difference]: Without dead ends: 428 [2021-11-19 05:01:31,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:01:31,633 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1278 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:31,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1278 Valid, 1476 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:01:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-19 05:01:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 175. [2021-11-19 05:01:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.2588235294117647) internal successors, (214), 174 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 214 transitions. [2021-11-19 05:01:31,670 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 214 transitions. Word has length 66 [2021-11-19 05:01:31,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:31,670 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 214 transitions. [2021-11-19 05:01:31,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:31,671 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 214 transitions. [2021-11-19 05:01:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 05:01:31,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:31,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:31,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 05:01:31,672 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:31,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash -653185432, now seen corresponding path program 1 times [2021-11-19 05:01:31,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:31,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782726775] [2021-11-19 05:01:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:31,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:32,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:32,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:32,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782726775] [2021-11-19 05:01:32,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782726775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:32,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:32,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-19 05:01:32,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050654138] [2021-11-19 05:01:32,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:32,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 05:01:32,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:32,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 05:01:32,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:01:32,333 INFO L87 Difference]: Start difference. First operand 175 states and 214 transitions. Second operand has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:34,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:34,600 INFO L93 Difference]: Finished difference Result 628 states and 814 transitions. [2021-11-19 05:01:34,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 05:01:34,601 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-19 05:01:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:34,605 INFO L225 Difference]: With dead ends: 628 [2021-11-19 05:01:34,605 INFO L226 Difference]: Without dead ends: 567 [2021-11-19 05:01:34,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=303, Invalid=1419, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 05:01:34,607 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 2271 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:34,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 3853 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2044 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 05:01:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-19 05:01:34,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 189. [2021-11-19 05:01:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.2608695652173914) internal successors, (232), 188 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 232 transitions. [2021-11-19 05:01:34,655 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 232 transitions. Word has length 66 [2021-11-19 05:01:34,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:34,656 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 232 transitions. [2021-11-19 05:01:34,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:34,656 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 232 transitions. [2021-11-19 05:01:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 05:01:34,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:34,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:34,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 05:01:34,658 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash -539222247, now seen corresponding path program 1 times [2021-11-19 05:01:34,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:34,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300697892] [2021-11-19 05:01:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:34,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:35,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:35,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300697892] [2021-11-19 05:01:35,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300697892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:35,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:35,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-19 05:01:35,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967914298] [2021-11-19 05:01:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:35,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 05:01:35,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 05:01:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:01:35,543 INFO L87 Difference]: Start difference. First operand 189 states and 232 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:37,927 INFO L93 Difference]: Finished difference Result 537 states and 693 transitions. [2021-11-19 05:01:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 05:01:37,937 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 05:01:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:37,940 INFO L225 Difference]: With dead ends: 537 [2021-11-19 05:01:37,940 INFO L226 Difference]: Without dead ends: 476 [2021-11-19 05:01:37,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=344, Invalid=1138, Unknown=0, NotChecked=0, Total=1482 [2021-11-19 05:01:37,942 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 1902 mSDsluCounter, 3144 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:37,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1902 Valid, 3463 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 05:01:37,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-19 05:01:37,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 174. [2021-11-19 05:01:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.2485207100591715) internal successors, (211), 173 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 211 transitions. [2021-11-19 05:01:37,987 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 211 transitions. Word has length 67 [2021-11-19 05:01:37,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:37,988 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 211 transitions. [2021-11-19 05:01:37,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:37,988 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 211 transitions. [2021-11-19 05:01:37,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 05:01:37,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:37,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:37,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 05:01:37,990 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:37,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:37,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1128954968, now seen corresponding path program 1 times [2021-11-19 05:01:37,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:37,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323889426] [2021-11-19 05:01:37,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:37,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:38,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:38,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323889426] [2021-11-19 05:01:38,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323889426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:38,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:38,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:01:38,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279987153] [2021-11-19 05:01:38,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:38,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:01:38,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:38,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:01:38,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:38,091 INFO L87 Difference]: Start difference. First operand 174 states and 211 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:38,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:38,489 INFO L93 Difference]: Finished difference Result 270 states and 335 transitions. [2021-11-19 05:01:38,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:01:38,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 05:01:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:38,491 INFO L225 Difference]: With dead ends: 270 [2021-11-19 05:01:38,491 INFO L226 Difference]: Without dead ends: 263 [2021-11-19 05:01:38,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:01:38,493 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 1121 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:38,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 554 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:01:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-19 05:01:38,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 174. [2021-11-19 05:01:38,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.242603550295858) internal successors, (210), 173 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 210 transitions. [2021-11-19 05:01:38,537 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 210 transitions. Word has length 67 [2021-11-19 05:01:38,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:38,538 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 210 transitions. [2021-11-19 05:01:38,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:38,538 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 210 transitions. [2021-11-19 05:01:38,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 05:01:38,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:38,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:38,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 05:01:38,540 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:38,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:38,540 INFO L85 PathProgramCache]: Analyzing trace with hash -710008920, now seen corresponding path program 1 times [2021-11-19 05:01:38,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:38,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178563457] [2021-11-19 05:01:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:38,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:38,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:38,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178563457] [2021-11-19 05:01:38,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178563457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:38,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:38,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:01:38,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253859547] [2021-11-19 05:01:38,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:38,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 05:01:38,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 05:01:38,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:38,643 INFO L87 Difference]: Start difference. First operand 174 states and 210 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:39,191 INFO L93 Difference]: Finished difference Result 339 states and 434 transitions. [2021-11-19 05:01:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:01:39,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 05:01:39,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:39,194 INFO L225 Difference]: With dead ends: 339 [2021-11-19 05:01:39,194 INFO L226 Difference]: Without dead ends: 267 [2021-11-19 05:01:39,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:01:39,197 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 744 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:39,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 834 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 05:01:39,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-19 05:01:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 174. [2021-11-19 05:01:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.2366863905325445) internal successors, (209), 173 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 209 transitions. [2021-11-19 05:01:39,246 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 209 transitions. Word has length 67 [2021-11-19 05:01:39,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:39,246 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 209 transitions. [2021-11-19 05:01:39,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 209 transitions. [2021-11-19 05:01:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 05:01:39,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:39,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:39,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 05:01:39,248 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:39,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1303055616, now seen corresponding path program 1 times [2021-11-19 05:01:39,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:39,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627565656] [2021-11-19 05:01:39,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:39,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:39,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:39,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627565656] [2021-11-19 05:01:39,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627565656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:39,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:39,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 05:01:39,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480781500] [2021-11-19 05:01:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:39,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:01:39,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:39,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:01:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:01:39,456 INFO L87 Difference]: Start difference. First operand 174 states and 209 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:40,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:40,514 INFO L93 Difference]: Finished difference Result 419 states and 545 transitions. [2021-11-19 05:01:40,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 05:01:40,515 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 05:01:40,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:40,518 INFO L225 Difference]: With dead ends: 419 [2021-11-19 05:01:40,518 INFO L226 Difference]: Without dead ends: 412 [2021-11-19 05:01:40,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2021-11-19 05:01:40,519 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1505 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:40,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1505 Valid, 1025 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:01:40,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-19 05:01:40,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 178. [2021-11-19 05:01:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.23121387283237) internal successors, (213), 177 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 213 transitions. [2021-11-19 05:01:40,568 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 213 transitions. Word has length 67 [2021-11-19 05:01:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:40,568 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 213 transitions. [2021-11-19 05:01:40,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 213 transitions. [2021-11-19 05:01:40,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 05:01:40,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:40,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:40,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 05:01:40,570 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:40,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash 763644804, now seen corresponding path program 1 times [2021-11-19 05:01:40,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:40,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952839156] [2021-11-19 05:01:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:40,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:40,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:40,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952839156] [2021-11-19 05:01:40,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952839156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:40,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:40,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:01:40,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142554071] [2021-11-19 05:01:40,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:40,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:01:40,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:40,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:01:40,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:01:40,857 INFO L87 Difference]: Start difference. First operand 178 states and 213 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) [2021-11-19 05:01:41,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:41,516 INFO L93 Difference]: Finished difference Result 457 states and 584 transitions. [2021-11-19 05:01:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:01:41,517 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 [2021-11-19 05:01:41,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:41,522 INFO L225 Difference]: With dead ends: 457 [2021-11-19 05:01:41,523 INFO L226 Difference]: Without dead ends: 425 [2021-11-19 05:01:41,523 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 [2021-11-19 05:01:41,524 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 1068 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:41,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 2593 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:01:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-19 05:01:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 146. [2021-11-19 05:01:41,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 143 states have (on average 1.2447552447552448) internal successors, (178), 145 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:41,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 178 transitions. [2021-11-19 05:01:41,569 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 178 transitions. Word has length 67 [2021-11-19 05:01:41,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:41,569 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 178 transitions. [2021-11-19 05:01:41,570 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) [2021-11-19 05:01:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 178 transitions. [2021-11-19 05:01:41,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:01:41,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:41,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:41,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 05:01:41,571 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:41,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:41,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1308874992, now seen corresponding path program 1 times [2021-11-19 05:01:41,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:41,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325261267] [2021-11-19 05:01:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:41,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:41,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:41,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325261267] [2021-11-19 05:01:41,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325261267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:41,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:41,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-19 05:01:41,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490538539] [2021-11-19 05:01:41,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:41,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 05:01:41,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:41,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 05:01:41,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:01:41,917 INFO L87 Difference]: Start difference. First operand 146 states and 178 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:43,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:43,060 INFO L93 Difference]: Finished difference Result 571 states and 787 transitions. [2021-11-19 05:01:43,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 05:01:43,060 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-19 05:01:43,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:43,063 INFO L225 Difference]: With dead ends: 571 [2021-11-19 05:01:43,063 INFO L226 Difference]: Without dead ends: 565 [2021-11-19 05:01:43,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 05:01:43,065 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 1271 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:43,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1271 Valid, 2713 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 05:01:43,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-11-19 05:01:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 140. [2021-11-19 05:01:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 138 states have (on average 1.2463768115942029) internal successors, (172), 139 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2021-11-19 05:01:43,111 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 69 [2021-11-19 05:01:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:43,112 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2021-11-19 05:01:43,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2021-11-19 05:01:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:01:43,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:43,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:43,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 05:01:43,114 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:43,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash -284944504, now seen corresponding path program 1 times [2021-11-19 05:01:43,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:43,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582756808] [2021-11-19 05:01:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:43,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:43,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:43,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582756808] [2021-11-19 05:01:43,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582756808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:43,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:43,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-19 05:01:43,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835798157] [2021-11-19 05:01:43,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:43,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 05:01:43,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:43,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 05:01:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:01:43,772 INFO L87 Difference]: Start difference. First operand 140 states and 172 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:45,963 INFO L93 Difference]: Finished difference Result 484 states and 631 transitions. [2021-11-19 05:01:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 05:01:45,964 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-19 05:01:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:45,966 INFO L225 Difference]: With dead ends: 484 [2021-11-19 05:01:45,966 INFO L226 Difference]: Without dead ends: 476 [2021-11-19 05:01:45,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2021-11-19 05:01:45,967 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 1244 mSDsluCounter, 3997 mSDsCounter, 0 mSdLazyCounter, 2114 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 4403 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:45,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 4403 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2114 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 05:01:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-19 05:01:46,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 154. [2021-11-19 05:01:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 152 states have (on average 1.243421052631579) internal successors, (189), 153 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 189 transitions. [2021-11-19 05:01:46,007 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 189 transitions. Word has length 69 [2021-11-19 05:01:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:46,008 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 189 transitions. [2021-11-19 05:01:46,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 189 transitions. [2021-11-19 05:01:46,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 05:01:46,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:46,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:46,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 05:01:46,009 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:46,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:46,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1768135991, now seen corresponding path program 1 times [2021-11-19 05:01:46,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:46,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259553243] [2021-11-19 05:01:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:46,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:46,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:46,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259553243] [2021-11-19 05:01:46,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259553243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:46,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:46,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 05:01:46,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291883723] [2021-11-19 05:01:46,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:46,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:01:46,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:46,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:01:46,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:01:46,300 INFO L87 Difference]: Start difference. First operand 154 states and 189 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:47,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:47,010 INFO L93 Difference]: Finished difference Result 361 states and 482 transitions. [2021-11-19 05:01:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:01:47,010 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-19 05:01:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:47,012 INFO L225 Difference]: With dead ends: 361 [2021-11-19 05:01:47,012 INFO L226 Difference]: Without dead ends: 346 [2021-11-19 05:01:47,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:01:47,013 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 870 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:47,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 1688 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:01:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-19 05:01:47,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 128. [2021-11-19 05:01:47,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.2519685039370079) internal successors, (159), 127 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) [2021-11-19 05:01:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 159 transitions. [2021-11-19 05:01:47,050 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 159 transitions. Word has length 70 [2021-11-19 05:01:47,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:47,050 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 159 transitions. [2021-11-19 05:01:47,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:47,050 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 159 transitions. [2021-11-19 05:01:47,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-19 05:01:47,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:47,056 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] [2021-11-19 05:01:47,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 05:01:47,057 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1208516883, now seen corresponding path program 1 times [2021-11-19 05:01:47,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:47,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153796255] [2021-11-19 05:01:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:47,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:47,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:47,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153796255] [2021-11-19 05:01:47,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153796255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:47,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:47,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:01:47,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883690670] [2021-11-19 05:01:47,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:47,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:01:47,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:47,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:01:47,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:01:47,135 INFO L87 Difference]: Start difference. First operand 128 states and 159 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:47,518 INFO L93 Difference]: Finished difference Result 560 states and 799 transitions. [2021-11-19 05:01:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:01:47,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-19 05:01:47,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:47,523 INFO L225 Difference]: With dead ends: 560 [2021-11-19 05:01:47,523 INFO L226 Difference]: Without dead ends: 506 [2021-11-19 05:01:47,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:01:47,524 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 895 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:47,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 950 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:01:47,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-19 05:01:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 180. [2021-11-19 05:01:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.318435754189944) internal successors, (236), 179 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 236 transitions. [2021-11-19 05:01:47,609 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 236 transitions. Word has length 92 [2021-11-19 05:01:47,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:47,610 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 236 transitions. [2021-11-19 05:01:47,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:47,610 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 236 transitions. [2021-11-19 05:01:47,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 05:01:47,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:47,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:47,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 05:01:47,612 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:47,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1324206254, now seen corresponding path program 1 times [2021-11-19 05:01:47,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:47,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491165845] [2021-11-19 05:01:47,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:47,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:47,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:47,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491165845] [2021-11-19 05:01:47,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491165845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:47,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:47,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:01:47,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93374201] [2021-11-19 05:01:47,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:47,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:01:47,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:01:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:01:47,679 INFO L87 Difference]: Start difference. First operand 180 states and 236 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:48,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:48,053 INFO L93 Difference]: Finished difference Result 658 states and 942 transitions. [2021-11-19 05:01:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:01:48,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 05:01:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:48,056 INFO L225 Difference]: With dead ends: 658 [2021-11-19 05:01:48,056 INFO L226 Difference]: Without dead ends: 552 [2021-11-19 05:01:48,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:48,057 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 647 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:48,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 673 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:01:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-19 05:01:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 284. [2021-11-19 05:01:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3816254416961131) internal successors, (391), 283 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:48,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2021-11-19 05:01:48,201 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 94 [2021-11-19 05:01:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:48,202 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2021-11-19 05:01:48,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2021-11-19 05:01:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 05:01:48,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:48,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:48,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 05:01:48,204 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:48,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1309824789, now seen corresponding path program 1 times [2021-11-19 05:01:48,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:48,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072503725] [2021-11-19 05:01:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:48,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:48,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:48,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:48,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072503725] [2021-11-19 05:01:48,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072503725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:48,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:48,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:01:48,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621412028] [2021-11-19 05:01:48,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:48,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:01:48,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:48,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:01:48,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:01:48,340 INFO L87 Difference]: Start difference. First operand 284 states and 391 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:48,522 INFO L93 Difference]: Finished difference Result 496 states and 704 transitions. [2021-11-19 05:01:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:01:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 05:01:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:48,525 INFO L225 Difference]: With dead ends: 496 [2021-11-19 05:01:48,525 INFO L226 Difference]: Without dead ends: 286 [2021-11-19 05:01:48,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:01:48,526 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 357 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:48,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 377 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:01:48,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-19 05:01:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2021-11-19 05:01:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3745583038869258) internal successors, (389), 283 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:48,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 389 transitions. [2021-11-19 05:01:48,676 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 389 transitions. Word has length 94 [2021-11-19 05:01:48,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:48,676 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 389 transitions. [2021-11-19 05:01:48,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:48,676 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 389 transitions. [2021-11-19 05:01:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 05:01:48,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:48,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:48,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 05:01:48,678 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash 570084468, now seen corresponding path program 1 times [2021-11-19 05:01:48,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:48,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650020499] [2021-11-19 05:01:48,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:48,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:48,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:48,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650020499] [2021-11-19 05:01:48,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650020499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:48,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:48,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:01:48,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038203674] [2021-11-19 05:01:48,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:48,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:01:48,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:48,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:01:48,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:01:48,721 INFO L87 Difference]: Start difference. First operand 284 states and 389 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:48,987 INFO L93 Difference]: Finished difference Result 678 states and 965 transitions. [2021-11-19 05:01:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:01:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 05:01:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:48,990 INFO L225 Difference]: With dead ends: 678 [2021-11-19 05:01:48,990 INFO L226 Difference]: Without dead ends: 468 [2021-11-19 05:01:48,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:01:48,991 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 89 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:48,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 251 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:01:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-19 05:01:49,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 462. [2021-11-19 05:01:49,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 1.3882863340563991) internal successors, (640), 461 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 640 transitions. [2021-11-19 05:01:49,182 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 640 transitions. Word has length 94 [2021-11-19 05:01:49,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:49,183 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 640 transitions. [2021-11-19 05:01:49,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:49,183 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 640 transitions. [2021-11-19 05:01:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 05:01:49,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:49,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:49,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 05:01:49,184 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:49,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:49,184 INFO L85 PathProgramCache]: Analyzing trace with hash -337360546, now seen corresponding path program 1 times [2021-11-19 05:01:49,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:49,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454015373] [2021-11-19 05:01:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:49,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:49,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:49,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454015373] [2021-11-19 05:01:49,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454015373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:49,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:49,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:01:49,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588382013] [2021-11-19 05:01:49,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:49,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:01:49,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:01:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:01:49,252 INFO L87 Difference]: Start difference. First operand 462 states and 640 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:49,883 INFO L93 Difference]: Finished difference Result 1341 states and 1908 transitions. [2021-11-19 05:01:49,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:01:49,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 05:01:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:49,888 INFO L225 Difference]: With dead ends: 1341 [2021-11-19 05:01:49,888 INFO L226 Difference]: Without dead ends: 1146 [2021-11-19 05:01:49,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:49,889 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 615 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:49,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 683 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:01:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-11-19 05:01:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 752. [2021-11-19 05:01:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 1.4087882822902795) internal successors, (1058), 751 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:50,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1058 transitions. [2021-11-19 05:01:50,208 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1058 transitions. Word has length 94 [2021-11-19 05:01:50,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:50,209 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1058 transitions. [2021-11-19 05:01:50,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:50,209 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1058 transitions. [2021-11-19 05:01:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 05:01:50,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:50,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:50,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 05:01:50,211 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-19 05:01:50,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1456780136, now seen corresponding path program 1 times [2021-11-19 05:01:50,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:50,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567358592] [2021-11-19 05:01:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:50,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:50,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:50,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567358592] [2021-11-19 05:01:50,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567358592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:50,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:50,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:01:50,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498038467] [2021-11-19 05:01:50,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:50,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:01:50,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:01:50,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:01:50,276 INFO L87 Difference]: Start difference. First operand 752 states and 1058 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:50,973 INFO L93 Difference]: Finished difference Result 1534 states and 2187 transitions. [2021-11-19 05:01:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:01:50,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 05:01:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:50,979 INFO L225 Difference]: With dead ends: 1534 [2021-11-19 05:01:50,979 INFO L226 Difference]: Without dead ends: 1339 [2021-11-19 05:01:50,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:01:50,980 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 584 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:50,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 734 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:01:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2021-11-19 05:01:51,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 945. [2021-11-19 05:01:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 1.416313559322034) internal successors, (1337), 944 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1337 transitions. [2021-11-19 05:01:51,489 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1337 transitions. Word has length 94 [2021-11-19 05:01:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:51,490 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 1337 transitions. [2021-11-19 05:01:51,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:51,490 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1337 transitions. [2021-11-19 05:01:51,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-19 05:01:51,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:51,492 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] [2021-11-19 05:01:51,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 05:01:51,492 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)] === [2021-11-19 05:01:51,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:51,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1890695249, now seen corresponding path program 1 times [2021-11-19 05:01:51,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:51,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540427804] [2021-11-19 05:01:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:51,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:51,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:51,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540427804] [2021-11-19 05:01:51,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540427804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:51,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:51,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:01:51,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861922864] [2021-11-19 05:01:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:51,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:01:51,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:51,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:01:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:01:51,537 INFO L87 Difference]: Start difference. First operand 945 states and 1337 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) [2021-11-19 05:01:52,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:52,548 INFO L93 Difference]: Finished difference Result 2615 states and 3727 transitions. [2021-11-19 05:01:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:01:52,549 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 [2021-11-19 05:01:52,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:52,558 INFO L225 Difference]: With dead ends: 2615 [2021-11-19 05:01:52,558 INFO L226 Difference]: Without dead ends: 1744 [2021-11-19 05:01:52,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:01:52,561 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 72 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:52,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 333 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:01:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2021-11-19 05:01:53,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1670. [2021-11-19 05:01:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1669 states have (on average 1.4140203714799282) internal successors, (2360), 1669 states have internal predecessors, (2360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2360 transitions. [2021-11-19 05:01:53,343 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2360 transitions. Word has length 95 [2021-11-19 05:01:53,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:53,344 INFO L470 AbstractCegarLoop]: Abstraction has 1670 states and 2360 transitions. [2021-11-19 05:01:53,344 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) [2021-11-19 05:01:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2360 transitions. [2021-11-19 05:01:53,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 05:01:53,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:53,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:01:53,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 05:01:53,346 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)] === [2021-11-19 05:01:53,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:53,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1608306199, now seen corresponding path program 1 times [2021-11-19 05:01:53,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:53,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11171474] [2021-11-19 05:01:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:53,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:53,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:53,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11171474] [2021-11-19 05:01:53,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11171474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:53,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:53,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:01:53,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538292663] [2021-11-19 05:01:53,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:53,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:01:53,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:01:53,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:01:53,394 INFO L87 Difference]: Start difference. First operand 1670 states and 2360 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) [2021-11-19 05:01:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:54,892 INFO L93 Difference]: Finished difference Result 4718 states and 6670 transitions. [2021-11-19 05:01:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:01:54,892 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 [2021-11-19 05:01:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:54,904 INFO L225 Difference]: With dead ends: 4718 [2021-11-19 05:01:54,904 INFO L226 Difference]: Without dead ends: 3122 [2021-11-19 05:01:54,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:01:54,907 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 65 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:54,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 333 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:01:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2021-11-19 05:01:56,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2976. [2021-11-19 05:01:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 1.4023529411764706) internal successors, (4172), 2975 states have internal predecessors, (4172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:01:56,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 4172 transitions. [2021-11-19 05:01:56,632 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 4172 transitions. Word has length 96 [2021-11-19 05:01:56,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:01:56,633 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 4172 transitions. [2021-11-19 05:01:56,633 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) [2021-11-19 05:01:56,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 4172 transitions. [2021-11-19 05:01:56,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 05:01:56,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:01:56,634 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] [2021-11-19 05:01:56,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 05:01:56,635 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)] === [2021-11-19 05:01:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:01:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash -916899152, now seen corresponding path program 1 times [2021-11-19 05:01:56,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:01:56,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108845263] [2021-11-19 05:01:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:01:56,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:01:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:01:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:01:56,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:01:56,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108845263] [2021-11-19 05:01:56,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108845263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:01:56,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:01:56,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:01:56,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954139766] [2021-11-19 05:01:56,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:01:56,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:01:56,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:01:56,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:01:56,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:01:56,681 INFO L87 Difference]: Start difference. First operand 2976 states and 4172 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) [2021-11-19 05:01:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:01:59,454 INFO L93 Difference]: Finished difference Result 8492 states and 11854 transitions. [2021-11-19 05:01:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:01:59,455 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 [2021-11-19 05:01:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:01:59,479 INFO L225 Difference]: With dead ends: 8492 [2021-11-19 05:01:59,479 INFO L226 Difference]: Without dead ends: 5590 [2021-11-19 05:01:59,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:01:59,484 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 55 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:01:59,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 333 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:01:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2021-11-19 05:02:02,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5300. [2021-11-19 05:02:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5300 states, 5299 states have (on average 1.382902434421589) internal successors, (7328), 5299 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 7328 transitions. [2021-11-19 05:02:02,207 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 7328 transitions. Word has length 97 [2021-11-19 05:02:02,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:02,207 INFO L470 AbstractCegarLoop]: Abstraction has 5300 states and 7328 transitions. [2021-11-19 05:02:02,208 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) [2021-11-19 05:02:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 7328 transitions. [2021-11-19 05:02:02,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 05:02:02,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:02,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:02,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 05:02:02,210 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)] === [2021-11-19 05:02:02,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:02,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2063595932, now seen corresponding path program 1 times [2021-11-19 05:02:02,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:02,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706460239] [2021-11-19 05:02:02,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:02,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:02,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:02,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706460239] [2021-11-19 05:02:02,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706460239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:02,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:02,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:02:02,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110015914] [2021-11-19 05:02:02,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:02,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:02:02,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:02,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:02:02,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:02:02,279 INFO L87 Difference]: Start difference. First operand 5300 states and 7328 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:07,139 INFO L93 Difference]: Finished difference Result 9356 states and 12848 transitions. [2021-11-19 05:02:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:02:07,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-19 05:02:07,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:07,164 INFO L225 Difference]: With dead ends: 9356 [2021-11-19 05:02:07,164 INFO L226 Difference]: Without dead ends: 9354 [2021-11-19 05:02:07,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:02:07,166 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 257 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:07,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 840 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:02:07,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9354 states. [2021-11-19 05:02:09,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9354 to 5492. [2021-11-19 05:02:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5492 states, 5491 states have (on average 1.3622291021671826) internal successors, (7480), 5491 states have internal predecessors, (7480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5492 states to 5492 states and 7480 transitions. [2021-11-19 05:02:09,928 INFO L78 Accepts]: Start accepts. Automaton has 5492 states and 7480 transitions. Word has length 98 [2021-11-19 05:02:09,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:09,929 INFO L470 AbstractCegarLoop]: Abstraction has 5492 states and 7480 transitions. [2021-11-19 05:02:09,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:09,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5492 states and 7480 transitions. [2021-11-19 05:02:09,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 05:02:09,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:09,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:09,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-19 05:02:09,931 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)] === [2021-11-19 05:02:09,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:09,932 INFO L85 PathProgramCache]: Analyzing trace with hash -777753176, now seen corresponding path program 1 times [2021-11-19 05:02:09,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:09,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18003401] [2021-11-19 05:02:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:09,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:10,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:10,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18003401] [2021-11-19 05:02:10,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18003401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:10,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:10,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:02:10,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465312436] [2021-11-19 05:02:10,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:10,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:02:10,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:10,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:02:10,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:02:10,004 INFO L87 Difference]: Start difference. First operand 5492 states and 7480 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:14,813 INFO L93 Difference]: Finished difference Result 10334 states and 14141 transitions. [2021-11-19 05:02:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:02:14,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-19 05:02:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:14,837 INFO L225 Difference]: With dead ends: 10334 [2021-11-19 05:02:14,837 INFO L226 Difference]: Without dead ends: 9124 [2021-11-19 05:02:14,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:02:14,841 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 641 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:14,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 751 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:02:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2021-11-19 05:02:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 6700. [2021-11-19 05:02:18,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.3625914315569487) internal successors, (9128), 6699 states have internal predecessors, (9128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9128 transitions. [2021-11-19 05:02:18,308 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9128 transitions. Word has length 98 [2021-11-19 05:02:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:18,309 INFO L470 AbstractCegarLoop]: Abstraction has 6700 states and 9128 transitions. [2021-11-19 05:02:18,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9128 transitions. [2021-11-19 05:02:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-19 05:02:18,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:18,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:02:18,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-19 05:02:18,311 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)] === [2021-11-19 05:02:18,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1173003609, now seen corresponding path program 1 times [2021-11-19 05:02:18,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:18,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736913045] [2021-11-19 05:02:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:18,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:18,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:18,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736913045] [2021-11-19 05:02:18,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736913045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:18,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:18,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:02:18,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581688969] [2021-11-19 05:02:18,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:18,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:02:18,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:02:18,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:02:18,355 INFO L87 Difference]: Start difference. First operand 6700 states and 9128 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:24,211 INFO L93 Difference]: Finished difference Result 17400 states and 23654 transitions. [2021-11-19 05:02:24,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:02:24,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-19 05:02:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:24,236 INFO L225 Difference]: With dead ends: 17400 [2021-11-19 05:02:24,237 INFO L226 Difference]: Without dead ends: 10774 [2021-11-19 05:02:24,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:02:24,245 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 76 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:24,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 336 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:02:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2021-11-19 05:02:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10068. [2021-11-19 05:02:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10068 states, 10067 states have (on average 1.3457832522101918) internal successors, (13548), 10067 states have internal predecessors, (13548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 13548 transitions. [2021-11-19 05:02:29,628 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 13548 transitions. Word has length 99 [2021-11-19 05:02:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:29,629 INFO L470 AbstractCegarLoop]: Abstraction has 10068 states and 13548 transitions. [2021-11-19 05:02:29,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 13548 transitions. [2021-11-19 05:02:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-19 05:02:29,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:29,633 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2021-11-19 05:02:29,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-19 05:02:29,634 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)] === [2021-11-19 05:02:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1824588018, now seen corresponding path program 1 times [2021-11-19 05:02:29,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:29,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476759062] [2021-11-19 05:02:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:29,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:29,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:29,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476759062] [2021-11-19 05:02:29,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476759062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:02:29,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:02:29,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:02:29,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322425281] [2021-11-19 05:02:29,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:02:29,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:02:29,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:29,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:02:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:02:29,687 INFO L87 Difference]: Start difference. First operand 10068 states and 13548 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:02:35,183 INFO L93 Difference]: Finished difference Result 20064 states and 27018 transitions. [2021-11-19 05:02:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:02:35,184 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-19 05:02:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:02:35,203 INFO L225 Difference]: With dead ends: 20064 [2021-11-19 05:02:35,203 INFO L226 Difference]: Without dead ends: 10070 [2021-11-19 05:02:35,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:02:35,216 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 69 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:02:35,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 309 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:02:35,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10070 states. [2021-11-19 05:02:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10070 to 10068. [2021-11-19 05:02:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10068 states, 10067 states have (on average 1.3283003874043906) internal successors, (13372), 10067 states have internal predecessors, (13372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 13372 transitions. [2021-11-19 05:02:40,751 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 13372 transitions. Word has length 125 [2021-11-19 05:02:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:02:40,752 INFO L470 AbstractCegarLoop]: Abstraction has 10068 states and 13372 transitions. [2021-11-19 05:02:40,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:02:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 13372 transitions. [2021-11-19 05:02:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-19 05:02:40,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:02:40,755 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] [2021-11-19 05:02:40,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-19 05:02:40,756 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)] === [2021-11-19 05:02:40,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:02:40,756 INFO L85 PathProgramCache]: Analyzing trace with hash -277387224, now seen corresponding path program 1 times [2021-11-19 05:02:40,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:02:40,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302448652] [2021-11-19 05:02:40,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:40,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:02:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:40,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:02:40,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302448652] [2021-11-19 05:02:40,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302448652] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:02:40,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205829149] [2021-11-19 05:02:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:02:40,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:02:40,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:02:40,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:02:40,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c7c81d4-de6b-4c11-8174-473860f9e160/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:02:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:02:41,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 05:02:41,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:02:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:42,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:02:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:02:44,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205829149] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:02:44,500 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:02:44,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-11-19 05:02:44,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316816900] [2021-11-19 05:02:44,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:02:44,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-19 05:02:44,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:02:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-19 05:02:44,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-11-19 05:02:44,505 INFO L87 Difference]: Start difference. First operand 10068 states and 13372 transitions. Second operand has 27 states, 27 states have (on average 10.962962962962964) internal successors, (296), 26 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)