./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G --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 a158f4486af48c98a7df56cba98940178e8617d42ff04ad885cda239ab95e10a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:43:53,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:43:53,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:43:53,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:43:53,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:43:53,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:43:53,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:43:53,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:43:53,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:43:53,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:43:53,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:43:53,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:43:53,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:43:53,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:43:53,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:43:53,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:43:53,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:43:53,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:43:53,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:43:53,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:43:53,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:43:53,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:43:53,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:43:53,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:43:53,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:43:53,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:43:53,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:43:53,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:43:53,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:43:53,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:43:53,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:43:53,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:43:53,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:43:53,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:43:53,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:43:53,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:43:53,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:43:53,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:43:53,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:43:53,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:43:53,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:43:53,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:43:53,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:43:53,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:43:53,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:43:53,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:43:53,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:43:53,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:43:53,406 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:43:53,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:43:53,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:43:53,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:43:53,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:43:53,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:43:53,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:43:53,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:43:53,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:43:53,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:43:53,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:43:53,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:43:53,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:43:53,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:43:53,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:43:53,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:43:53,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:43:53,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:43:53,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:43:53,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:43:53,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:43:53,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:43:53,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:43:53,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:43:53,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:43:53,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:43:53,414 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_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a158f4486af48c98a7df56cba98940178e8617d42ff04ad885cda239ab95e10a [2021-11-23 12:43:53,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:43:53,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:43:53,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:43:53,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:43:53,725 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:43:53,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-23 12:43:53,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/data/70f16a59a/fd50b49c51e24c4c88d4c394284fc4fb/FLAGa4cfe9e06 [2021-11-23 12:43:54,349 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:43:54,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-23 12:43:54,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/data/70f16a59a/fd50b49c51e24c4c88d4c394284fc4fb/FLAGa4cfe9e06 [2021-11-23 12:43:54,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/data/70f16a59a/fd50b49c51e24c4c88d4c394284fc4fb [2021-11-23 12:43:54,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:43:54,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:43:54,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:43:54,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:43:54,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:43:54,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:43:54" (1/1) ... [2021-11-23 12:43:54,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@458b4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:54, skipping insertion in model container [2021-11-23 12:43:54,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:43:54" (1/1) ... [2021-11-23 12:43:54,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:43:54,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:43:55,009 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7119,7132] [2021-11-23 12:43:55,030 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9806,9819] [2021-11-23 12:43:55,038 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10897,10910] [2021-11-23 12:43:55,053 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11503,11516] [2021-11-23 12:43:55,063 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12922,12935] [2021-11-23 12:43:55,068 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13528,13541] [2021-11-23 12:43:55,081 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14457,14470] [2021-11-23 12:43:55,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:43:55,150 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:43:55,242 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7119,7132] [2021-11-23 12:43:55,252 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[9806,9819] [2021-11-23 12:43:55,257 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[10897,10910] [2021-11-23 12:43:55,261 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11503,11516] [2021-11-23 12:43:55,267 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12922,12935] [2021-11-23 12:43:55,270 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13528,13541] [2021-11-23 12:43:55,275 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_771ddf5a-7a09-447e-999d-009e25ec3557/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14457,14470] [2021-11-23 12:43:55,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:43:55,351 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:43:55,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55 WrapperNode [2021-11-23 12:43:55,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:43:55,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:43:55,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:43:55,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:43:55,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,440 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 973 [2021-11-23 12:43:55,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:43:55,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:43:55,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:43:55,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:43:55,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:43:55,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:43:55,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:43:55,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:43:55,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (1/1) ... [2021-11-23 12:43:55,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:43:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:43:55,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:43:55,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:43:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:43:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:43:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:43:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:43:55,824 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:43:55,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:43:56,670 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:43:56,680 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:43:56,681 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 12:43:56,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:43:56 BoogieIcfgContainer [2021-11-23 12:43:56,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:43:56,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:43:56,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:43:56,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:43:56,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:43:54" (1/3) ... [2021-11-23 12:43:56,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c731086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:43:56, skipping insertion in model container [2021-11-23 12:43:56,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:43:55" (2/3) ... [2021-11-23 12:43:56,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c731086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:43:56, skipping insertion in model container [2021-11-23 12:43:56,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:43:56" (3/3) ... [2021-11-23 12:43:56,692 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-23 12:43:56,697 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:43:56,698 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-23 12:43:56,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:43:56,755 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 [2021-11-23 12:43:56,756 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-23 12:43:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 198 states have (on average 1.8232323232323233) internal successors, (361), 205 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 12:43:56,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:56,804 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] [2021-11-23 12:43:56,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:43:56,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1899747950, now seen corresponding path program 1 times [2021-11-23 12:43:56,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:56,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980593529] [2021-11-23 12:43:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:56,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:57,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:57,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980593529] [2021-11-23 12:43:57,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980593529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:43:57,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:43:57,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:43:57,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774033744] [2021-11-23 12:43:57,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:43:57,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:43:57,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:43:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:43:57,265 INFO L87 Difference]: Start difference. First operand has 206 states, 198 states have (on average 1.8232323232323233) internal successors, (361), 205 states have internal predecessors, (361), 0 states have call successors, (0), 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 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:57,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:57,698 INFO L93 Difference]: Finished difference Result 422 states and 704 transitions. [2021-11-23 12:43:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:43:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-23 12:43:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:57,713 INFO L225 Difference]: With dead ends: 422 [2021-11-23 12:43:57,713 INFO L226 Difference]: Without dead ends: 258 [2021-11-23 12:43:57,717 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 [2021-11-23 12:43:57,721 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 1100 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:57,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 310 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:43:57,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-23 12:43:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 234. [2021-11-23 12:43:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 227 states have (on average 1.3524229074889869) internal successors, (307), 233 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) [2021-11-23 12:43:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 307 transitions. [2021-11-23 12:43:57,784 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 307 transitions. Word has length 46 [2021-11-23 12:43:57,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:57,785 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 307 transitions. [2021-11-23 12:43:57,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 307 transitions. [2021-11-23 12:43:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 12:43:57,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:57,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:43:57,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:43:57,789 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:43:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash -121525429, now seen corresponding path program 1 times [2021-11-23 12:43:57,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:57,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527794082] [2021-11-23 12:43:57,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:57,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:57,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:57,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527794082] [2021-11-23 12:43:57,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527794082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:43:57,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:43:57,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:43:57,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352730399] [2021-11-23 12:43:57,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:43:57,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:43:57,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:57,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:43:57,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:43:57,926 INFO L87 Difference]: Start difference. First operand 234 states and 307 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:58,110 INFO L93 Difference]: Finished difference Result 417 states and 560 transitions. [2021-11-23 12:43:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:43:58,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-23 12:43:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:58,118 INFO L225 Difference]: With dead ends: 417 [2021-11-23 12:43:58,118 INFO L226 Difference]: Without dead ends: 221 [2021-11-23 12:43:58,122 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 [2021-11-23 12:43:58,125 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 555 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:58,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 132 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:43:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-23 12:43:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-11-23 12:43:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 214 states have (on average 1.355140186915888) internal successors, (290), 220 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 290 transitions. [2021-11-23 12:43:58,182 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 290 transitions. Word has length 47 [2021-11-23 12:43:58,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:58,183 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 290 transitions. [2021-11-23 12:43:58,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:58,185 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 290 transitions. [2021-11-23 12:43:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 12:43:58,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:58,192 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] [2021-11-23 12:43:58,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:43:58,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:43:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash 414043727, now seen corresponding path program 1 times [2021-11-23 12:43:58,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:58,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730061207] [2021-11-23 12:43:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:58,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:58,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:58,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730061207] [2021-11-23 12:43:58,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730061207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:43:58,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:43:58,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:43:58,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822425363] [2021-11-23 12:43:58,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:43:58,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:43:58,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:58,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:43:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:43:58,316 INFO L87 Difference]: Start difference. First operand 221 states and 290 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:58,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:58,474 INFO L93 Difference]: Finished difference Result 404 states and 541 transitions. [2021-11-23 12:43:58,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:43:58,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-23 12:43:58,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:58,476 INFO L225 Difference]: With dead ends: 404 [2021-11-23 12:43:58,477 INFO L226 Difference]: Without dead ends: 216 [2021-11-23 12:43:58,477 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 [2021-11-23 12:43:58,479 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 517 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:58,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 129 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:43:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-23 12:43:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-23 12:43:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.3492822966507176) internal successors, (282), 215 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 282 transitions. [2021-11-23 12:43:58,501 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 282 transitions. Word has length 48 [2021-11-23 12:43:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:58,502 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 282 transitions. [2021-11-23 12:43:58,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 282 transitions. [2021-11-23 12:43:58,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 12:43:58,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:58,504 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] [2021-11-23 12:43:58,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:43:58,505 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:43:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash -453133940, now seen corresponding path program 1 times [2021-11-23 12:43:58,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:58,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085069736] [2021-11-23 12:43:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:58,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:58,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:58,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085069736] [2021-11-23 12:43:58,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085069736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:43:58,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:43:58,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:43:58,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337252116] [2021-11-23 12:43:58,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:43:58,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:43:58,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:43:58,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:43:58,704 INFO L87 Difference]: Start difference. First operand 216 states and 282 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:59,371 INFO L93 Difference]: Finished difference Result 531 states and 735 transitions. [2021-11-23 12:43:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:43:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-23 12:43:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:59,378 INFO L225 Difference]: With dead ends: 531 [2021-11-23 12:43:59,378 INFO L226 Difference]: Without dead ends: 526 [2021-11-23 12:43:59,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:43:59,386 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 844 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:59,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 736 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:43:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-23 12:43:59,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 216. [2021-11-23 12:43:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.3444976076555024) internal successors, (281), 215 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 281 transitions. [2021-11-23 12:43:59,420 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 281 transitions. Word has length 49 [2021-11-23 12:43:59,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:59,421 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 281 transitions. [2021-11-23 12:43:59,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:59,422 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 281 transitions. [2021-11-23 12:43:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 12:43:59,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:59,425 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] [2021-11-23 12:43:59,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:43:59,426 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:43:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1459063162, now seen corresponding path program 1 times [2021-11-23 12:43:59,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:59,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514077082] [2021-11-23 12:43:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:59,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:59,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:59,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514077082] [2021-11-23 12:43:59,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514077082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:43:59,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:43:59,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:43:59,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194652203] [2021-11-23 12:43:59,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:43:59,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:43:59,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:59,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:43:59,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:43:59,645 INFO L87 Difference]: Start difference. First operand 216 states and 281 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:00,302 INFO L93 Difference]: Finished difference Result 535 states and 738 transitions. [2021-11-23 12:44:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:44:00,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-23 12:44:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:00,306 INFO L225 Difference]: With dead ends: 535 [2021-11-23 12:44:00,308 INFO L226 Difference]: Without dead ends: 434 [2021-11-23 12:44:00,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:44:00,317 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1031 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:00,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 824 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:44:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-23 12:44:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 216. [2021-11-23 12:44:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.3397129186602872) internal successors, (280), 215 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 280 transitions. [2021-11-23 12:44:00,355 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 280 transitions. Word has length 49 [2021-11-23 12:44:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:00,358 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 280 transitions. [2021-11-23 12:44:00,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 280 transitions. [2021-11-23 12:44:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 12:44:00,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:00,365 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] [2021-11-23 12:44:00,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:44:00,366 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:00,367 INFO L85 PathProgramCache]: Analyzing trace with hash 8857914, now seen corresponding path program 1 times [2021-11-23 12:44:00,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:00,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929052298] [2021-11-23 12:44:00,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:00,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:00,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:00,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929052298] [2021-11-23 12:44:00,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929052298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:00,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:00,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:44:00,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940738474] [2021-11-23 12:44:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:00,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 12:44:00,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:00,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 12:44:00,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:44:00,541 INFO L87 Difference]: Start difference. First operand 216 states and 280 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:00,818 INFO L93 Difference]: Finished difference Result 460 states and 615 transitions. [2021-11-23 12:44:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:44:00,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-23 12:44:00,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:00,821 INFO L225 Difference]: With dead ends: 460 [2021-11-23 12:44:00,822 INFO L226 Difference]: Without dead ends: 336 [2021-11-23 12:44:00,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:44:00,824 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 1018 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:00,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 310 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:44:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-23 12:44:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 216. [2021-11-23 12:44:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 209 states have (on average 1.3349282296650717) internal successors, (279), 215 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 279 transitions. [2021-11-23 12:44:00,850 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 279 transitions. Word has length 49 [2021-11-23 12:44:00,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:00,851 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 279 transitions. [2021-11-23 12:44:00,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 279 transitions. [2021-11-23 12:44:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:44:00,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:00,852 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] [2021-11-23 12:44:00,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:44:00,852 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:00,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1308237609, now seen corresponding path program 1 times [2021-11-23 12:44:00,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:00,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206079335] [2021-11-23 12:44:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:00,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:01,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:01,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206079335] [2021-11-23 12:44:01,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206079335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:01,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:01,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:44:01,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713691425] [2021-11-23 12:44:01,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:01,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:44:01,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:01,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:44:01,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:44:01,243 INFO L87 Difference]: Start difference. First operand 216 states and 279 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:01,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:01,887 INFO L93 Difference]: Finished difference Result 459 states and 636 transitions. [2021-11-23 12:44:01,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 12:44:01,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-23 12:44:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:01,890 INFO L225 Difference]: With dead ends: 459 [2021-11-23 12:44:01,891 INFO L226 Difference]: Without dead ends: 443 [2021-11-23 12:44:01,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:44:01,893 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 1026 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:01,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 1421 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:44:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-23 12:44:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 200. [2021-11-23 12:44:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.3333333333333333) internal successors, (260), 199 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 260 transitions. [2021-11-23 12:44:01,925 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 260 transitions. Word has length 51 [2021-11-23 12:44:01,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:01,925 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 260 transitions. [2021-11-23 12:44:01,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:01,925 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 260 transitions. [2021-11-23 12:44:01,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:44:01,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:01,927 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] [2021-11-23 12:44:01,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:44:01,927 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:01,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:01,928 INFO L85 PathProgramCache]: Analyzing trace with hash 766441193, now seen corresponding path program 1 times [2021-11-23 12:44:01,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:01,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340791625] [2021-11-23 12:44:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:01,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:02,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:02,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340791625] [2021-11-23 12:44:02,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340791625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:02,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:02,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-23 12:44:02,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866675224] [2021-11-23 12:44:02,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:02,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 12:44:02,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:02,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 12:44:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-11-23 12:44:02,519 INFO L87 Difference]: Start difference. First operand 200 states and 260 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:04,280 INFO L93 Difference]: Finished difference Result 453 states and 619 transitions. [2021-11-23 12:44:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:44:04,281 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-23 12:44:04,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:04,284 INFO L225 Difference]: With dead ends: 453 [2021-11-23 12:44:04,284 INFO L226 Difference]: Without dead ends: 365 [2021-11-23 12:44:04,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 12:44:04,286 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1519 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:04,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1519 Valid, 1695 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 12:44:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-23 12:44:04,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 206. [2021-11-23 12:44:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 201 states have (on average 1.3333333333333333) internal successors, (268), 205 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2021-11-23 12:44:04,314 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 51 [2021-11-23 12:44:04,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:04,316 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2021-11-23 12:44:04,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2021-11-23 12:44:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:44:04,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:04,317 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] [2021-11-23 12:44:04,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:44:04,317 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:04,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1014075955, now seen corresponding path program 1 times [2021-11-23 12:44:04,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:04,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706075371] [2021-11-23 12:44:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:04,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:04,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:04,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706075371] [2021-11-23 12:44:04,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706075371] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:04,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:04,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 12:44:04,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175465520] [2021-11-23 12:44:04,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:04,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:44:04,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:04,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:44:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:44:04,702 INFO L87 Difference]: Start difference. First operand 206 states and 268 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:05,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:05,506 INFO L93 Difference]: Finished difference Result 425 states and 595 transitions. [2021-11-23 12:44:05,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:44:05,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-23 12:44:05,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:05,509 INFO L225 Difference]: With dead ends: 425 [2021-11-23 12:44:05,509 INFO L226 Difference]: Without dead ends: 330 [2021-11-23 12:44:05,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-11-23 12:44:05,512 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 841 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:05,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 1088 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:44:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-23 12:44:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 195. [2021-11-23 12:44:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.3350785340314135) internal successors, (255), 194 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:05,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 255 transitions. [2021-11-23 12:44:05,538 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 255 transitions. Word has length 51 [2021-11-23 12:44:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:05,538 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 255 transitions. [2021-11-23 12:44:05,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 255 transitions. [2021-11-23 12:44:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 12:44:05,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:05,540 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] [2021-11-23 12:44:05,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:44:05,540 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:05,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1721906586, now seen corresponding path program 1 times [2021-11-23 12:44:05,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:05,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488149229] [2021-11-23 12:44:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:05,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:05,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:05,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488149229] [2021-11-23 12:44:05,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488149229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:05,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:05,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:44:05,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824166362] [2021-11-23 12:44:05,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:05,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:44:05,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:05,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:44:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:44:05,653 INFO L87 Difference]: Start difference. First operand 195 states and 255 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:06,016 INFO L93 Difference]: Finished difference Result 443 states and 617 transitions. [2021-11-23 12:44:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:44:06,016 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-23 12:44:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:06,018 INFO L225 Difference]: With dead ends: 443 [2021-11-23 12:44:06,018 INFO L226 Difference]: Without dead ends: 329 [2021-11-23 12:44:06,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-23 12:44:06,020 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 787 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:06,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 490 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:44:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-23 12:44:06,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 195. [2021-11-23 12:44:06,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.324607329842932) internal successors, (253), 194 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:06,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 253 transitions. [2021-11-23 12:44:06,047 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 253 transitions. Word has length 52 [2021-11-23 12:44:06,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:06,047 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 253 transitions. [2021-11-23 12:44:06,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:06,048 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 253 transitions. [2021-11-23 12:44:06,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 12:44:06,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:06,049 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] [2021-11-23 12:44:06,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:44:06,050 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:06,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1294616090, now seen corresponding path program 1 times [2021-11-23 12:44:06,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:06,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004390111] [2021-11-23 12:44:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:06,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:06,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:06,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004390111] [2021-11-23 12:44:06,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004390111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:06,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:06,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 12:44:06,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424374963] [2021-11-23 12:44:06,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:06,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 12:44:06,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:06,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 12:44:06,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:44:06,195 INFO L87 Difference]: Start difference. First operand 195 states and 253 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:06,659 INFO L93 Difference]: Finished difference Result 502 states and 695 transitions. [2021-11-23 12:44:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:44:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-23 12:44:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:06,663 INFO L225 Difference]: With dead ends: 502 [2021-11-23 12:44:06,663 INFO L226 Difference]: Without dead ends: 495 [2021-11-23 12:44:06,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:44:06,665 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 1042 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:06,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 525 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:44:06,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-23 12:44:06,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 195. [2021-11-23 12:44:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 191 states have (on average 1.3141361256544504) internal successors, (251), 194 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:06,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 251 transitions. [2021-11-23 12:44:06,694 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 251 transitions. Word has length 52 [2021-11-23 12:44:06,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:06,694 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 251 transitions. [2021-11-23 12:44:06,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:06,694 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 251 transitions. [2021-11-23 12:44:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 12:44:06,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:06,695 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] [2021-11-23 12:44:06,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:44:06,696 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1671010270, now seen corresponding path program 1 times [2021-11-23 12:44:06,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:06,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451629619] [2021-11-23 12:44:06,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:06,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:07,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:07,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451629619] [2021-11-23 12:44:07,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451629619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:07,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:07,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-23 12:44:07,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467149004] [2021-11-23 12:44:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:07,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 12:44:07,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:07,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 12:44:07,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:44:07,212 INFO L87 Difference]: Start difference. First operand 195 states and 251 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:08,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:08,223 INFO L93 Difference]: Finished difference Result 295 states and 393 transitions. [2021-11-23 12:44:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:44:08,224 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-23 12:44:08,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:08,225 INFO L225 Difference]: With dead ends: 295 [2021-11-23 12:44:08,225 INFO L226 Difference]: Without dead ends: 207 [2021-11-23 12:44:08,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2021-11-23 12:44:08,227 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 253 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:08,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1158 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:44:08,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-23 12:44:08,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 185. [2021-11-23 12:44:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 182 states have (on average 1.3131868131868132) internal successors, (239), 184 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 239 transitions. [2021-11-23 12:44:08,265 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 239 transitions. Word has length 52 [2021-11-23 12:44:08,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:08,266 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 239 transitions. [2021-11-23 12:44:08,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:08,266 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 239 transitions. [2021-11-23 12:44:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 12:44:08,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:08,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:08,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:44:08,270 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:08,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1899159370, now seen corresponding path program 1 times [2021-11-23 12:44:08,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:08,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991474711] [2021-11-23 12:44:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:08,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:08,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:08,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991474711] [2021-11-23 12:44:08,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991474711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:08,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:08,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 12:44:08,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101155740] [2021-11-23 12:44:08,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:08,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 12:44:08,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 12:44:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:44:08,663 INFO L87 Difference]: Start difference. First operand 185 states and 239 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:09,733 INFO L93 Difference]: Finished difference Result 401 states and 544 transitions. [2021-11-23 12:44:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 12:44:09,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-23 12:44:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:09,736 INFO L225 Difference]: With dead ends: 401 [2021-11-23 12:44:09,736 INFO L226 Difference]: Without dead ends: 395 [2021-11-23 12:44:09,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2021-11-23 12:44:09,738 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 567 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:09,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 2062 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:44:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-23 12:44:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 191. [2021-11-23 12:44:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 188 states have (on average 1.3138297872340425) internal successors, (247), 190 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 247 transitions. [2021-11-23 12:44:09,767 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 247 transitions. Word has length 54 [2021-11-23 12:44:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:09,767 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 247 transitions. [2021-11-23 12:44:09,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:09,767 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 247 transitions. [2021-11-23 12:44:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 12:44:09,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:09,772 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] [2021-11-23 12:44:09,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:44:09,772 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:09,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1464456906, now seen corresponding path program 1 times [2021-11-23 12:44:09,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:09,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049400021] [2021-11-23 12:44:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:09,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:10,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:10,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049400021] [2021-11-23 12:44:10,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049400021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:10,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:10,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 12:44:10,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639439208] [2021-11-23 12:44:10,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:10,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 12:44:10,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:10,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 12:44:10,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:44:10,148 INFO L87 Difference]: Start difference. First operand 191 states and 247 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:11,017 INFO L93 Difference]: Finished difference Result 221 states and 275 transitions. [2021-11-23 12:44:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 12:44:11,017 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-11-23 12:44:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:11,019 INFO L225 Difference]: With dead ends: 221 [2021-11-23 12:44:11,019 INFO L226 Difference]: Without dead ends: 213 [2021-11-23 12:44:11,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2021-11-23 12:44:11,020 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 254 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:11,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 1473 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:44:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-23 12:44:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 196. [2021-11-23 12:44:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 193 states have (on average 1.305699481865285) internal successors, (252), 195 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 252 transitions. [2021-11-23 12:44:11,049 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 252 transitions. Word has length 54 [2021-11-23 12:44:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:11,049 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 252 transitions. [2021-11-23 12:44:11,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:11,050 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 252 transitions. [2021-11-23 12:44:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 12:44:11,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:11,051 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] [2021-11-23 12:44:11,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:44:11,051 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:11,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:11,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2098262835, now seen corresponding path program 1 times [2021-11-23 12:44:11,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:11,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942737461] [2021-11-23 12:44:11,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:11,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:11,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:11,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942737461] [2021-11-23 12:44:11,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942737461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:11,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:11,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-23 12:44:11,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977982329] [2021-11-23 12:44:11,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:11,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 12:44:11,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:11,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 12:44:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-23 12:44:11,800 INFO L87 Difference]: Start difference. First operand 196 states and 252 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:13,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:13,650 INFO L93 Difference]: Finished difference Result 406 states and 547 transitions. [2021-11-23 12:44:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 12:44:13,651 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-23 12:44:13,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:13,653 INFO L225 Difference]: With dead ends: 406 [2021-11-23 12:44:13,653 INFO L226 Difference]: Without dead ends: 400 [2021-11-23 12:44:13,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 12:44:13,654 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 656 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:13,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 2833 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:44:13,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-11-23 12:44:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 190. [2021-11-23 12:44:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 187 states have (on average 1.2994652406417113) internal successors, (243), 189 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 243 transitions. [2021-11-23 12:44:13,686 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 243 transitions. Word has length 55 [2021-11-23 12:44:13,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:13,686 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 243 transitions. [2021-11-23 12:44:13,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 243 transitions. [2021-11-23 12:44:13,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 12:44:13,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:13,688 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] [2021-11-23 12:44:13,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:44:13,688 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:13,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1345030097, now seen corresponding path program 1 times [2021-11-23 12:44:13,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:13,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576814530] [2021-11-23 12:44:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:13,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:14,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576814530] [2021-11-23 12:44:14,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576814530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:14,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:14,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-23 12:44:14,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241276285] [2021-11-23 12:44:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:14,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 12:44:14,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:14,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 12:44:14,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:44:14,027 INFO L87 Difference]: Start difference. First operand 190 states and 243 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:15,178 INFO L93 Difference]: Finished difference Result 677 states and 949 transitions. [2021-11-23 12:44:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:44:15,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-23 12:44:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:15,182 INFO L225 Difference]: With dead ends: 677 [2021-11-23 12:44:15,183 INFO L226 Difference]: Without dead ends: 671 [2021-11-23 12:44:15,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2021-11-23 12:44:15,184 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 958 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:15,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [958 Valid, 2400 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 12:44:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-11-23 12:44:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 196. [2021-11-23 12:44:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 193 states have (on average 1.3005181347150259) internal successors, (251), 195 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 251 transitions. [2021-11-23 12:44:15,222 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 251 transitions. Word has length 55 [2021-11-23 12:44:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:15,223 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 251 transitions. [2021-11-23 12:44:15,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 251 transitions. [2021-11-23 12:44:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 12:44:15,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:15,224 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] [2021-11-23 12:44:15,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:44:15,224 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:15,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1456871967, now seen corresponding path program 1 times [2021-11-23 12:44:15,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:15,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894733775] [2021-11-23 12:44:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:15,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:15,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:15,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894733775] [2021-11-23 12:44:15,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894733775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:15,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:15,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:44:15,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732588070] [2021-11-23 12:44:15,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:15,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:44:15,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:44:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:44:15,451 INFO L87 Difference]: Start difference. First operand 196 states and 251 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:15,952 INFO L93 Difference]: Finished difference Result 462 states and 649 transitions. [2021-11-23 12:44:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 12:44:15,952 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-23 12:44:15,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:15,954 INFO L225 Difference]: With dead ends: 462 [2021-11-23 12:44:15,954 INFO L226 Difference]: Without dead ends: 439 [2021-11-23 12:44:15,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2021-11-23 12:44:15,956 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1027 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:15,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 713 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:44:15,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-23 12:44:15,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 173. [2021-11-23 12:44:15,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.3216374269005848) internal successors, (226), 172 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2021-11-23 12:44:15,995 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 55 [2021-11-23 12:44:15,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:15,995 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2021-11-23 12:44:15,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:15,996 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2021-11-23 12:44:15,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 12:44:15,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:15,997 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] [2021-11-23 12:44:15,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:44:15,997 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2096401114, now seen corresponding path program 1 times [2021-11-23 12:44:15,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:15,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41836895] [2021-11-23 12:44:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:15,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:16,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:16,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41836895] [2021-11-23 12:44:16,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41836895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:16,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:16,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 12:44:16,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810952289] [2021-11-23 12:44:16,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:16,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 12:44:16,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 12:44:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-11-23 12:44:16,601 INFO L87 Difference]: Start difference. First operand 173 states and 226 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:17,888 INFO L93 Difference]: Finished difference Result 360 states and 501 transitions. [2021-11-23 12:44:17,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 12:44:17,888 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-23 12:44:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:17,894 INFO L225 Difference]: With dead ends: 360 [2021-11-23 12:44:17,894 INFO L226 Difference]: Without dead ends: 354 [2021-11-23 12:44:17,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2021-11-23 12:44:17,895 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 236 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:17,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 3005 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 12:44:17,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-23 12:44:17,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 161. [2021-11-23 12:44:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.325) internal successors, (212), 160 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 212 transitions. [2021-11-23 12:44:17,934 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 212 transitions. Word has length 56 [2021-11-23 12:44:17,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:17,935 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 212 transitions. [2021-11-23 12:44:17,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 212 transitions. [2021-11-23 12:44:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 12:44:17,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:17,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:17,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:44:17,937 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1406506919, now seen corresponding path program 1 times [2021-11-23 12:44:17,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:17,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743465525] [2021-11-23 12:44:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:17,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:17,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:17,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743465525] [2021-11-23 12:44:17,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743465525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:17,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:17,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:44:17,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070866662] [2021-11-23 12:44:17,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:17,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:44:17,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:17,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:44:17,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:17,990 INFO L87 Difference]: Start difference. First operand 161 states and 212 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:18,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:18,202 INFO L93 Difference]: Finished difference Result 665 states and 980 transitions. [2021-11-23 12:44:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:44:18,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-23 12:44:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:18,206 INFO L225 Difference]: With dead ends: 665 [2021-11-23 12:44:18,206 INFO L226 Difference]: Without dead ends: 581 [2021-11-23 12:44:18,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:44:18,208 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 538 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:18,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 465 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-11-23 12:44:18,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 243. [2021-11-23 12:44:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.384297520661157) internal successors, (335), 242 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 335 transitions. [2021-11-23 12:44:18,275 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 335 transitions. Word has length 72 [2021-11-23 12:44:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:18,275 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 335 transitions. [2021-11-23 12:44:18,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 335 transitions. [2021-11-23 12:44:18,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:44:18,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:18,277 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] [2021-11-23 12:44:18,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 12:44:18,277 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:18,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1673936966, now seen corresponding path program 1 times [2021-11-23 12:44:18,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:18,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82368534] [2021-11-23 12:44:18,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:18,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:18,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:18,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82368534] [2021-11-23 12:44:18,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82368534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:18,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:18,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:44:18,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154852080] [2021-11-23 12:44:18,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:18,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:44:18,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:18,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:44:18,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:18,336 INFO L87 Difference]: Start difference. First operand 243 states and 335 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:18,601 INFO L93 Difference]: Finished difference Result 825 states and 1212 transitions. [2021-11-23 12:44:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:44:18,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-23 12:44:18,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:18,605 INFO L225 Difference]: With dead ends: 825 [2021-11-23 12:44:18,605 INFO L226 Difference]: Without dead ends: 659 [2021-11-23 12:44:18,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:44:18,607 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 298 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:18,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 416 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-11-23 12:44:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 407. [2021-11-23 12:44:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.435960591133005) internal successors, (583), 406 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 583 transitions. [2021-11-23 12:44:18,732 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 583 transitions. Word has length 74 [2021-11-23 12:44:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:18,733 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 583 transitions. [2021-11-23 12:44:18,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 583 transitions. [2021-11-23 12:44:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:44:18,734 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:18,734 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:18,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 12:44:18,735 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:18,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1695280855, now seen corresponding path program 1 times [2021-11-23 12:44:18,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:18,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29863552] [2021-11-23 12:44:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:18,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:18,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:18,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:18,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29863552] [2021-11-23 12:44:18,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29863552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:18,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:18,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:18,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445860202] [2021-11-23 12:44:18,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:18,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:18,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:18,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:18,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:18,792 INFO L87 Difference]: Start difference. First operand 407 states and 583 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:18,922 INFO L93 Difference]: Finished difference Result 739 states and 1083 transitions. [2021-11-23 12:44:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-23 12:44:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:18,926 INFO L225 Difference]: With dead ends: 739 [2021-11-23 12:44:18,926 INFO L226 Difference]: Without dead ends: 409 [2021-11-23 12:44:18,927 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 [2021-11-23 12:44:18,928 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 52 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:18,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 202 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-23 12:44:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 407. [2021-11-23 12:44:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.4261083743842364) internal successors, (579), 406 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 579 transitions. [2021-11-23 12:44:19,051 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 579 transitions. Word has length 74 [2021-11-23 12:44:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:19,051 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 579 transitions. [2021-11-23 12:44:19,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 579 transitions. [2021-11-23 12:44:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:44:19,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:19,065 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] [2021-11-23 12:44:19,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 12:44:19,066 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:19,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1859946120, now seen corresponding path program 1 times [2021-11-23 12:44:19,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:19,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253712846] [2021-11-23 12:44:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:19,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:19,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:19,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:19,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253712846] [2021-11-23 12:44:19,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253712846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:19,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:19,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:19,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755612903] [2021-11-23 12:44:19,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:19,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:19,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:19,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:19,115 INFO L87 Difference]: Start difference. First operand 407 states and 579 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:19,360 INFO L93 Difference]: Finished difference Result 1015 states and 1481 transitions. [2021-11-23 12:44:19,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:19,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-23 12:44:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:19,365 INFO L225 Difference]: With dead ends: 1015 [2021-11-23 12:44:19,365 INFO L226 Difference]: Without dead ends: 685 [2021-11-23 12:44:19,366 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 [2021-11-23 12:44:19,367 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 69 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 197 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 [2021-11-23 12:44:19,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 197 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-11-23 12:44:19,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 675. [2021-11-23 12:44:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.4198813056379822) internal successors, (957), 674 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 957 transitions. [2021-11-23 12:44:19,595 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 957 transitions. Word has length 74 [2021-11-23 12:44:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:19,595 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 957 transitions. [2021-11-23 12:44:19,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 957 transitions. [2021-11-23 12:44:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:44:19,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:19,597 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] [2021-11-23 12:44:19,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 12:44:19,597 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1889765056, now seen corresponding path program 1 times [2021-11-23 12:44:19,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:19,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166836551] [2021-11-23 12:44:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:19,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:19,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:19,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166836551] [2021-11-23 12:44:19,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166836551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:19,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:19,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:44:19,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317022581] [2021-11-23 12:44:19,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:19,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:44:19,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:19,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:44:19,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:19,657 INFO L87 Difference]: Start difference. First operand 675 states and 957 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:20,115 INFO L93 Difference]: Finished difference Result 1727 states and 2491 transitions. [2021-11-23 12:44:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:44:20,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-23 12:44:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:20,124 INFO L225 Difference]: With dead ends: 1727 [2021-11-23 12:44:20,124 INFO L226 Difference]: Without dead ends: 1427 [2021-11-23 12:44:20,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:44:20,126 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 290 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:20,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 468 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:20,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-23 12:44:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1123. [2021-11-23 12:44:20,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.432263814616756) internal successors, (1607), 1122 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1607 transitions. [2021-11-23 12:44:20,519 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1607 transitions. Word has length 74 [2021-11-23 12:44:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:20,520 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1607 transitions. [2021-11-23 12:44:20,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1607 transitions. [2021-11-23 12:44:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 12:44:20,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:20,522 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] [2021-11-23 12:44:20,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 12:44:20,523 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:20,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1073266559, now seen corresponding path program 1 times [2021-11-23 12:44:20,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:20,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228340937] [2021-11-23 12:44:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:20,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:20,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:20,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:20,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228340937] [2021-11-23 12:44:20,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228340937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:20,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:20,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:20,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224805517] [2021-11-23 12:44:20,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:20,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:20,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:20,576 INFO L87 Difference]: Start difference. First operand 1123 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:21,304 INFO L93 Difference]: Finished difference Result 3103 states and 4457 transitions. [2021-11-23 12:44:21,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-23 12:44:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:21,316 INFO L225 Difference]: With dead ends: 3103 [2021-11-23 12:44:21,316 INFO L226 Difference]: Without dead ends: 2057 [2021-11-23 12:44:21,318 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 [2021-11-23 12:44:21,319 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 55 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 260 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 [2021-11-23 12:44:21,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 260 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-11-23 12:44:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1943. [2021-11-23 12:44:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1942 states have (on average 1.4237899073120495) internal successors, (2765), 1942 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:21,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 2765 transitions. [2021-11-23 12:44:21,980 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 2765 transitions. Word has length 75 [2021-11-23 12:44:21,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:21,981 INFO L470 AbstractCegarLoop]: Abstraction has 1943 states and 2765 transitions. [2021-11-23 12:44:21,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 2765 transitions. [2021-11-23 12:44:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 12:44:21,983 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:21,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:21,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 12:44:21,983 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:21,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash -391890934, now seen corresponding path program 1 times [2021-11-23 12:44:21,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:21,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366142154] [2021-11-23 12:44:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:21,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:22,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:22,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366142154] [2021-11-23 12:44:22,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366142154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:22,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:22,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:22,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644232856] [2021-11-23 12:44:22,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:22,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:22,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:22,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:22,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:22,054 INFO L87 Difference]: Start difference. First operand 1943 states and 2765 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:23,029 INFO L93 Difference]: Finished difference Result 5451 states and 7735 transitions. [2021-11-23 12:44:23,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:23,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 12:44:23,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:23,043 INFO L225 Difference]: With dead ends: 5451 [2021-11-23 12:44:23,043 INFO L226 Difference]: Without dead ends: 3585 [2021-11-23 12:44:23,046 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 [2021-11-23 12:44:23,047 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 45 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 260 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 [2021-11-23 12:44:23,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 260 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2021-11-23 12:44:23,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3359. [2021-11-23 12:44:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 3358 states have (on average 1.4047051816557474) internal successors, (4717), 3358 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 4717 transitions. [2021-11-23 12:44:24,014 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 4717 transitions. Word has length 76 [2021-11-23 12:44:24,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:24,014 INFO L470 AbstractCegarLoop]: Abstraction has 3359 states and 4717 transitions. [2021-11-23 12:44:24,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 4717 transitions. [2021-11-23 12:44:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 12:44:24,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:24,016 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] [2021-11-23 12:44:24,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 12:44:24,016 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:24,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:24,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1183434290, now seen corresponding path program 1 times [2021-11-23 12:44:24,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:24,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095500325] [2021-11-23 12:44:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:24,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:24,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:24,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095500325] [2021-11-23 12:44:24,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095500325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:24,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:24,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:44:24,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662077477] [2021-11-23 12:44:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:24,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:44:24,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:44:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:44:24,084 INFO L87 Difference]: Start difference. First operand 3359 states and 4717 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:25,770 INFO L93 Difference]: Finished difference Result 5987 states and 8317 transitions. [2021-11-23 12:44:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 12:44:25,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-23 12:44:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:25,794 INFO L225 Difference]: With dead ends: 5987 [2021-11-23 12:44:25,794 INFO L226 Difference]: Without dead ends: 5985 [2021-11-23 12:44:25,795 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 [2021-11-23 12:44:25,795 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 205 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 673 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 [2021-11-23 12:44:25,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 673 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5985 states. [2021-11-23 12:44:26,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5985 to 3503. [2021-11-23 12:44:26,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3502 states have (on average 1.3789263278126784) internal successors, (4829), 3502 states have internal predecessors, (4829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 4829 transitions. [2021-11-23 12:44:26,768 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 4829 transitions. Word has length 77 [2021-11-23 12:44:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:26,769 INFO L470 AbstractCegarLoop]: Abstraction has 3503 states and 4829 transitions. [2021-11-23 12:44:26,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 4829 transitions. [2021-11-23 12:44:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 12:44:26,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:26,770 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] [2021-11-23 12:44:26,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 12:44:26,771 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:26,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:26,771 INFO L85 PathProgramCache]: Analyzing trace with hash -696816699, now seen corresponding path program 1 times [2021-11-23 12:44:26,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:26,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554738022] [2021-11-23 12:44:26,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:26,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:26,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:26,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554738022] [2021-11-23 12:44:26,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554738022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:26,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:26,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:44:26,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806035295] [2021-11-23 12:44:26,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:26,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:44:26,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:26,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:44:26,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:44:26,830 INFO L87 Difference]: Start difference. First operand 3503 states and 4829 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:28,181 INFO L93 Difference]: Finished difference Result 6463 states and 8961 transitions. [2021-11-23 12:44:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:44:28,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-23 12:44:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:28,207 INFO L225 Difference]: With dead ends: 6463 [2021-11-23 12:44:28,207 INFO L226 Difference]: Without dead ends: 5477 [2021-11-23 12:44:28,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:44:28,210 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 289 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:28,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 430 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5477 states. [2021-11-23 12:44:29,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5477 to 4487. [2021-11-23 12:44:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4486 states have (on average 1.3796255015604102) internal successors, (6189), 4486 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 6189 transitions. [2021-11-23 12:44:29,495 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 6189 transitions. Word has length 77 [2021-11-23 12:44:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:29,495 INFO L470 AbstractCegarLoop]: Abstraction has 4487 states and 6189 transitions. [2021-11-23 12:44:29,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 6189 transitions. [2021-11-23 12:44:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 12:44:29,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:29,497 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] [2021-11-23 12:44:29,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 12:44:29,498 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:29,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1657778714, now seen corresponding path program 1 times [2021-11-23 12:44:29,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:29,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510173962] [2021-11-23 12:44:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:29,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:29,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:29,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510173962] [2021-11-23 12:44:29,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510173962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:29,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:29,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:29,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808457255] [2021-11-23 12:44:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:29,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:29,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:29,556 INFO L87 Difference]: Start difference. First operand 4487 states and 6189 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:31,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:31,381 INFO L93 Difference]: Finished difference Result 11723 states and 16159 transitions. [2021-11-23 12:44:31,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:31,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-23 12:44:31,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:31,398 INFO L225 Difference]: With dead ends: 11723 [2021-11-23 12:44:31,399 INFO L226 Difference]: Without dead ends: 7313 [2021-11-23 12:44:31,404 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 [2021-11-23 12:44:31,405 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 59 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 263 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 [2021-11-23 12:44:31,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 263 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7313 states. [2021-11-23 12:44:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7313 to 6735. [2021-11-23 12:44:33,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 6734 states have (on average 1.353875853875854) internal successors, (9117), 6734 states have internal predecessors, (9117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 9117 transitions. [2021-11-23 12:44:33,254 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 9117 transitions. Word has length 78 [2021-11-23 12:44:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:33,254 INFO L470 AbstractCegarLoop]: Abstraction has 6735 states and 9117 transitions. [2021-11-23 12:44:33,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 9117 transitions. [2021-11-23 12:44:33,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 12:44:33,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:33,258 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 12:44:33,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 12:44:33,258 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:33,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:33,259 INFO L85 PathProgramCache]: Analyzing trace with hash 910821393, now seen corresponding path program 1 times [2021-11-23 12:44:33,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:33,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457749399] [2021-11-23 12:44:33,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:33,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:33,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:33,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457749399] [2021-11-23 12:44:33,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457749399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:44:33,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:44:33,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:44:33,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787023981] [2021-11-23 12:44:33,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:44:33,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:44:33,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:33,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:44:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:44:33,310 INFO L87 Difference]: Start difference. First operand 6735 states and 9117 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) [2021-11-23 12:44:35,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:35,293 INFO L93 Difference]: Finished difference Result 13395 states and 18151 transitions. [2021-11-23 12:44:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:44:35,294 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 [2021-11-23 12:44:35,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:35,306 INFO L225 Difference]: With dead ends: 13395 [2021-11-23 12:44:35,306 INFO L226 Difference]: Without dead ends: 6737 [2021-11-23 12:44:35,314 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 [2021-11-23 12:44:35,315 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 56 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 240 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 [2021-11-23 12:44:35,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 240 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:44:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6737 states. [2021-11-23 12:44:37,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6737 to 6735. [2021-11-23 12:44:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 6734 states have (on average 1.3324918324918325) internal successors, (8973), 6734 states have internal predecessors, (8973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:44:37,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 8973 transitions. [2021-11-23 12:44:37,063 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 8973 transitions. Word has length 99 [2021-11-23 12:44:37,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:37,064 INFO L470 AbstractCegarLoop]: Abstraction has 6735 states and 8973 transitions. [2021-11-23 12:44:37,064 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) [2021-11-23 12:44:37,064 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 8973 transitions. [2021-11-23 12:44:37,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 12:44:37,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:37,067 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 12:44:37,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 12:44:37,067 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-23 12:44:37,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:37,068 INFO L85 PathProgramCache]: Analyzing trace with hash 412335050, now seen corresponding path program 1 times [2021-11-23 12:44:37,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:37,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060367077] [2021-11-23 12:44:37,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:37,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:37,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:37,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060367077] [2021-11-23 12:44:37,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060367077] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:44:37,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628563062] [2021-11-23 12:44:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:37,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:44:37,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:37,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:44:37,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_771ddf5a-7a09-447e-999d-009e25ec3557/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:44:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:37,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 12:44:37,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:38,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:40,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628563062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:44:40,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:44:40,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 31 [2021-11-23 12:44:40,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172195635] [2021-11-23 12:44:40,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:44:40,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 12:44:40,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 12:44:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2021-11-23 12:44:40,199 INFO L87 Difference]: Start difference. First operand 6735 states and 8973 transitions. Second operand has 32 states, 32 states have (on average 8.40625) internal successors, (269), 31 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)