./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7aa3cc4b1f15d564db90712e4f440d0f111d49f542d9eda58173576bb757792 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:25:59,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:25:59,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:25:59,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:25:59,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:25:59,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:25:59,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:25:59,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:25:59,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:25:59,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:25:59,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:25:59,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:25:59,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:25:59,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:25:59,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:25:59,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:25:59,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:25:59,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:25:59,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:25:59,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:25:59,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:25:59,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:25:59,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:25:59,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:25:59,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:25:59,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:25:59,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:25:59,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:25:59,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:25:59,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:25:59,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:25:59,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:25:59,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:25:59,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:25:59,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:25:59,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:25:59,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:25:59,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:25:59,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:25:59,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:25:59,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:25:59,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:25:59,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:25:59,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:25:59,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:25:59,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:25:59,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:25:59,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:25:59,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:25:59,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:25:59,508 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:25:59,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:25:59,509 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:25:59,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:25:59,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:25:59,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:25:59,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:25:59,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:25:59,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:25:59,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:25:59,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:25:59,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:25:59,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:25:59,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:25:59,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:25:59,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:25:59,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:25:59,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:25:59,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:25:59,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:25:59,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:25:59,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:25:59,512 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:25:59,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:25:59,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:25:59,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:25:59,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7aa3cc4b1f15d564db90712e4f440d0f111d49f542d9eda58173576bb757792 [2021-12-17 16:25:59,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:25:59,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:25:59,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:25:59,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:25:59,719 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:25:59,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-12-17 16:25:59,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d25fc7f8/60f2b92a0475487fa5410cfda2f2acf9/FLAG102ecd48f [2021-12-17 16:26:00,151 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:26:00,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-12-17 16:26:00,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d25fc7f8/60f2b92a0475487fa5410cfda2f2acf9/FLAG102ecd48f [2021-12-17 16:26:00,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d25fc7f8/60f2b92a0475487fa5410cfda2f2acf9 [2021-12-17 16:26:00,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:26:00,505 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:26:00,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:26:00,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:26:00,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:26:00,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:26:00" (1/1) ... [2021-12-17 16:26:00,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e165e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:00, skipping insertion in model container [2021-12-17 16:26:00,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:26:00" (1/1) ... [2021-12-17 16:26:00,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:26:00,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:26:00,761 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9421,9434] [2021-12-17 16:26:00,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12913,12926] [2021-12-17 16:26:00,778 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14069,14082] [2021-12-17 16:26:00,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14725,14738] [2021-12-17 16:26:00,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16246,16259] [2021-12-17 16:26:00,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16902,16915] [2021-12-17 16:26:00,812 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17886,17899] [2021-12-17 16:26:00,824 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20224,20237] [2021-12-17 16:26:00,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20883,20896] [2021-12-17 16:26:00,833 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21907,21920] [2021-12-17 16:26:00,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23782,23795] [2021-12-17 16:26:00,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:26:00,914 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:26:00,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9421,9434] [2021-12-17 16:26:01,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12913,12926] [2021-12-17 16:26:01,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14069,14082] [2021-12-17 16:26:01,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14725,14738] [2021-12-17 16:26:01,024 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16246,16259] [2021-12-17 16:26:01,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16902,16915] [2021-12-17 16:26:01,034 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17886,17899] [2021-12-17 16:26:01,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20224,20237] [2021-12-17 16:26:01,046 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20883,20896] [2021-12-17 16:26:01,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21907,21920] [2021-12-17 16:26:01,059 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23782,23795] [2021-12-17 16:26:01,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:26:01,140 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:26:01,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01 WrapperNode [2021-12-17 16:26:01,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:26:01,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:26:01,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:26:01,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:26:01,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,233 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1870 [2021-12-17 16:26:01,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:26:01,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:26:01,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:26:01,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:26:01,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:26:01,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:26:01,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:26:01,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:26:01,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (1/1) ... [2021-12-17 16:26:01,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:26:01,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:26:01,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 16:26:01,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 16:26:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:26:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:26:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:26:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:26:01,525 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:26:01,528 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:26:02,123 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:26:02,131 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:26:02,131 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:26:02,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:26:02 BoogieIcfgContainer [2021-12-17 16:26:02,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:26:02,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:26:02,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:26:02,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:26:02,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:26:00" (1/3) ... [2021-12-17 16:26:02,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fecc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:26:02, skipping insertion in model container [2021-12-17 16:26:02,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:26:01" (2/3) ... [2021-12-17 16:26:02,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fecc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:26:02, skipping insertion in model container [2021-12-17 16:26:02,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:26:02" (3/3) ... [2021-12-17 16:26:02,138 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2021-12-17 16:26:02,141 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:26:02,141 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-17 16:26:02,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:26:02,172 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 16:26:02,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-17 16:26:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 346 states have (on average 1.8381502890173411) internal successors, (636), 357 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-17 16:26:02,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:02,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:02,194 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1374718599, now seen corresponding path program 1 times [2021-12-17 16:26:02,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:02,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371553893] [2021-12-17 16:26:02,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:02,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:02,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:02,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371553893] [2021-12-17 16:26:02,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371553893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:02,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:02,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:26:02,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808015258] [2021-12-17 16:26:02,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:02,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:26:02,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:02,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:26:02,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:26:02,430 INFO L87 Difference]: Start difference. First operand has 358 states, 346 states have (on average 1.8381502890173411) internal successors, (636), 357 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:02,664 INFO L93 Difference]: Finished difference Result 570 states and 974 transitions. [2021-12-17 16:26:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:26:02,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-12-17 16:26:02,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:02,674 INFO L225 Difference]: With dead ends: 570 [2021-12-17 16:26:02,674 INFO L226 Difference]: Without dead ends: 315 [2021-12-17 16:26:02,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:26:02,679 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1485 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:02,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 404 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-17 16:26:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-17 16:26:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 304 states have (on average 1.2763157894736843) internal successors, (388), 314 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 388 transitions. [2021-12-17 16:26:02,711 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 388 transitions. Word has length 59 [2021-12-17 16:26:02,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:02,712 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 388 transitions. [2021-12-17 16:26:02,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:02,712 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 388 transitions. [2021-12-17 16:26:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-17 16:26:02,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:02,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:02,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:26:02,714 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:02,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:02,715 INFO L85 PathProgramCache]: Analyzing trace with hash 897843910, now seen corresponding path program 1 times [2021-12-17 16:26:02,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:02,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349470538] [2021-12-17 16:26:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:02,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:02,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:02,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349470538] [2021-12-17 16:26:02,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349470538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:02,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:02,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:26:02,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361386794] [2021-12-17 16:26:02,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:02,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:26:02,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:26:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:26:02,802 INFO L87 Difference]: Start difference. First operand 315 states and 388 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:03,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:03,012 INFO L93 Difference]: Finished difference Result 652 states and 835 transitions. [2021-12-17 16:26:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:26:03,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-17 16:26:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:03,015 INFO L225 Difference]: With dead ends: 652 [2021-12-17 16:26:03,015 INFO L226 Difference]: Without dead ends: 408 [2021-12-17 16:26:03,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:26:03,017 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1334 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:03,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1334 Valid, 313 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-17 16:26:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 366. [2021-12-17 16:26:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 355 states have (on average 1.3577464788732394) internal successors, (482), 365 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:03,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 482 transitions. [2021-12-17 16:26:03,032 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 482 transitions. Word has length 60 [2021-12-17 16:26:03,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:03,032 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 482 transitions. [2021-12-17 16:26:03,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:03,032 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 482 transitions. [2021-12-17 16:26:03,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-17 16:26:03,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:03,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:03,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:26:03,034 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:03,035 INFO L85 PathProgramCache]: Analyzing trace with hash 626465560, now seen corresponding path program 1 times [2021-12-17 16:26:03,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:03,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042660895] [2021-12-17 16:26:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:03,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:03,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:03,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042660895] [2021-12-17 16:26:03,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042660895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:03,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:03,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:26:03,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452099180] [2021-12-17 16:26:03,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:03,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:26:03,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:26:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:26:03,112 INFO L87 Difference]: Start difference. First operand 366 states and 482 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:03,253 INFO L93 Difference]: Finished difference Result 661 states and 890 transitions. [2021-12-17 16:26:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:26:03,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-12-17 16:26:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:03,255 INFO L225 Difference]: With dead ends: 661 [2021-12-17 16:26:03,255 INFO L226 Difference]: Without dead ends: 347 [2021-12-17 16:26:03,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:26:03,257 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 907 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:03,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 199 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-17 16:26:03,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-12-17 16:26:03,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 336 states have (on average 1.3660714285714286) internal successors, (459), 346 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 459 transitions. [2021-12-17 16:26:03,267 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 459 transitions. Word has length 61 [2021-12-17 16:26:03,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:03,267 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 459 transitions. [2021-12-17 16:26:03,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:03,268 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 459 transitions. [2021-12-17 16:26:03,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-17 16:26:03,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:03,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:03,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:26:03,270 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:03,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash 55190193, now seen corresponding path program 1 times [2021-12-17 16:26:03,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:03,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656759098] [2021-12-17 16:26:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:03,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:03,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:03,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656759098] [2021-12-17 16:26:03,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656759098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:03,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:03,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:26:03,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089746230] [2021-12-17 16:26:03,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:03,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:26:03,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:26:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:26:03,324 INFO L87 Difference]: Start difference. First operand 347 states and 459 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:03,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:03,458 INFO L93 Difference]: Finished difference Result 642 states and 865 transitions. [2021-12-17 16:26:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:26:03,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-17 16:26:03,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:03,460 INFO L225 Difference]: With dead ends: 642 [2021-12-17 16:26:03,460 INFO L226 Difference]: Without dead ends: 339 [2021-12-17 16:26:03,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:26:03,462 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 860 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:03,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 195 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-12-17 16:26:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-12-17 16:26:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 328 states have (on average 1.3658536585365855) internal successors, (448), 338 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:03,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 448 transitions. [2021-12-17 16:26:03,473 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 448 transitions. Word has length 62 [2021-12-17 16:26:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:03,473 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 448 transitions. [2021-12-17 16:26:03,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:03,474 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 448 transitions. [2021-12-17 16:26:03,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 16:26:03,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:03,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:03,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:26:03,475 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:03,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1176799625, now seen corresponding path program 1 times [2021-12-17 16:26:03,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:03,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392902499] [2021-12-17 16:26:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:03,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:03,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:03,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392902499] [2021-12-17 16:26:03,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392902499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:03,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:03,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:26:03,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898459831] [2021-12-17 16:26:03,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:03,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:03,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:03,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:03,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:03,623 INFO L87 Difference]: Start difference. First operand 339 states and 448 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:04,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:04,382 INFO L93 Difference]: Finished difference Result 887 states and 1218 transitions. [2021-12-17 16:26:04,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:26:04,382 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-17 16:26:04,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:04,385 INFO L225 Difference]: With dead ends: 887 [2021-12-17 16:26:04,385 INFO L226 Difference]: Without dead ends: 776 [2021-12-17 16:26:04,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:26:04,386 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 1329 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:04,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1329 Valid, 1292 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:26:04,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-12-17 16:26:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 346. [2021-12-17 16:26:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 335 states have (on average 1.3671641791044775) internal successors, (458), 345 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 458 transitions. [2021-12-17 16:26:04,403 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 458 transitions. Word has length 63 [2021-12-17 16:26:04,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:04,403 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 458 transitions. [2021-12-17 16:26:04,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 458 transitions. [2021-12-17 16:26:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 16:26:04,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:04,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:04,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:26:04,405 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash 735397477, now seen corresponding path program 1 times [2021-12-17 16:26:04,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:04,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028684491] [2021-12-17 16:26:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:04,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:04,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:04,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028684491] [2021-12-17 16:26:04,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028684491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:04,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:04,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:04,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145068561] [2021-12-17 16:26:04,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:04,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:04,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:04,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:04,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:04,494 INFO L87 Difference]: Start difference. First operand 346 states and 458 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:05,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:05,013 INFO L93 Difference]: Finished difference Result 780 states and 1066 transitions. [2021-12-17 16:26:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:05,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-17 16:26:05,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:05,016 INFO L225 Difference]: With dead ends: 780 [2021-12-17 16:26:05,016 INFO L226 Difference]: Without dead ends: 640 [2021-12-17 16:26:05,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:26:05,017 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 2044 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:05,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2044 Valid, 866 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-12-17 16:26:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 339. [2021-12-17 16:26:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 328 states have (on average 1.3628048780487805) internal successors, (447), 338 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:05,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 447 transitions. [2021-12-17 16:26:05,053 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 447 transitions. Word has length 63 [2021-12-17 16:26:05,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:05,053 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 447 transitions. [2021-12-17 16:26:05,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 447 transitions. [2021-12-17 16:26:05,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 16:26:05,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:05,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:05,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:26:05,055 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:05,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1585644853, now seen corresponding path program 1 times [2021-12-17 16:26:05,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:05,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048565672] [2021-12-17 16:26:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:05,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:05,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:05,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048565672] [2021-12-17 16:26:05,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048565672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:05,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:05,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:05,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980993116] [2021-12-17 16:26:05,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:05,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:05,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:05,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:05,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:05,143 INFO L87 Difference]: Start difference. First operand 339 states and 447 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:05,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:05,719 INFO L93 Difference]: Finished difference Result 884 states and 1227 transitions. [2021-12-17 16:26:05,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:05,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-17 16:26:05,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:05,722 INFO L225 Difference]: With dead ends: 884 [2021-12-17 16:26:05,722 INFO L226 Difference]: Without dead ends: 766 [2021-12-17 16:26:05,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:05,724 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1291 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:05,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1291 Valid, 1313 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:05,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-12-17 16:26:05,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 339. [2021-12-17 16:26:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 328 states have (on average 1.3597560975609757) internal successors, (446), 338 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 446 transitions. [2021-12-17 16:26:05,740 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 446 transitions. Word has length 63 [2021-12-17 16:26:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:05,741 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 446 transitions. [2021-12-17 16:26:05,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:05,741 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 446 transitions. [2021-12-17 16:26:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 16:26:05,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:05,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:05,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:26:05,742 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:05,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash 202563885, now seen corresponding path program 1 times [2021-12-17 16:26:05,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:05,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956428553] [2021-12-17 16:26:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:05,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:05,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:05,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956428553] [2021-12-17 16:26:05,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956428553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:05,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:05,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:26:05,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188206679] [2021-12-17 16:26:05,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:05,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:26:05,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:05,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:26:05,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:26:05,856 INFO L87 Difference]: Start difference. First operand 339 states and 446 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:06,169 INFO L93 Difference]: Finished difference Result 689 states and 911 transitions. [2021-12-17 16:26:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:26:06,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-17 16:26:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:06,172 INFO L225 Difference]: With dead ends: 689 [2021-12-17 16:26:06,172 INFO L226 Difference]: Without dead ends: 504 [2021-12-17 16:26:06,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:26:06,173 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1372 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:06,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1372 Valid, 542 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:06,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-12-17 16:26:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 339. [2021-12-17 16:26:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 328 states have (on average 1.3567073170731707) internal successors, (445), 338 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:06,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 445 transitions. [2021-12-17 16:26:06,192 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 445 transitions. Word has length 63 [2021-12-17 16:26:06,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:06,193 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 445 transitions. [2021-12-17 16:26:06,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 445 transitions. [2021-12-17 16:26:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:26:06,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:06,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:06,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:26:06,194 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:06,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash -620136770, now seen corresponding path program 1 times [2021-12-17 16:26:06,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:06,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034267623] [2021-12-17 16:26:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:06,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:06,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:06,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034267623] [2021-12-17 16:26:06,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034267623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:06,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:06,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:06,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341489169] [2021-12-17 16:26:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:06,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:06,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:06,270 INFO L87 Difference]: Start difference. First operand 339 states and 445 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:06,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:06,826 INFO L93 Difference]: Finished difference Result 857 states and 1181 transitions. [2021-12-17 16:26:06,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:06,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:26:06,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:06,829 INFO L225 Difference]: With dead ends: 857 [2021-12-17 16:26:06,829 INFO L226 Difference]: Without dead ends: 746 [2021-12-17 16:26:06,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:26:06,830 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1778 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:06,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1778 Valid, 953 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-12-17 16:26:06,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 339. [2021-12-17 16:26:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 328 states have (on average 1.353658536585366) internal successors, (444), 338 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 444 transitions. [2021-12-17 16:26:06,847 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 444 transitions. Word has length 65 [2021-12-17 16:26:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:06,847 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 444 transitions. [2021-12-17 16:26:06,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 444 transitions. [2021-12-17 16:26:06,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:26:06,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:06,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:06,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:26:06,849 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:06,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:06,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1292060332, now seen corresponding path program 1 times [2021-12-17 16:26:06,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:06,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215220055] [2021-12-17 16:26:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:06,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:06,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:06,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215220055] [2021-12-17 16:26:06,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215220055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:06,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:06,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:26:06,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104980891] [2021-12-17 16:26:06,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:06,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:06,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:06,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:06,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:06,986 INFO L87 Difference]: Start difference. First operand 339 states and 444 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:08,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:08,311 INFO L93 Difference]: Finished difference Result 1626 states and 2303 transitions. [2021-12-17 16:26:08,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:26:08,312 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:26:08,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:08,315 INFO L225 Difference]: With dead ends: 1626 [2021-12-17 16:26:08,315 INFO L226 Difference]: Without dead ends: 1503 [2021-12-17 16:26:08,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:26:08,317 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 3744 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:08,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3744 Valid, 1707 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:26:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2021-12-17 16:26:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 343. [2021-12-17 16:26:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 332 states have (on average 1.3493975903614457) internal successors, (448), 342 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:08,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 448 transitions. [2021-12-17 16:26:08,338 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 448 transitions. Word has length 65 [2021-12-17 16:26:08,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:08,339 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 448 transitions. [2021-12-17 16:26:08,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:08,339 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 448 transitions. [2021-12-17 16:26:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:26:08,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:08,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:08,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 16:26:08,340 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:08,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash -109241464, now seen corresponding path program 1 times [2021-12-17 16:26:08,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:08,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006104169] [2021-12-17 16:26:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:08,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:08,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:08,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006104169] [2021-12-17 16:26:08,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006104169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:08,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:08,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:08,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668549925] [2021-12-17 16:26:08,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:08,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:08,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:08,434 INFO L87 Difference]: Start difference. First operand 343 states and 448 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:08,890 INFO L93 Difference]: Finished difference Result 858 states and 1181 transitions. [2021-12-17 16:26:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:08,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:26:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:08,893 INFO L225 Difference]: With dead ends: 858 [2021-12-17 16:26:08,893 INFO L226 Difference]: Without dead ends: 750 [2021-12-17 16:26:08,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:08,894 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1393 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:08,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 921 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-12-17 16:26:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 343. [2021-12-17 16:26:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 332 states have (on average 1.3463855421686748) internal successors, (447), 342 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 447 transitions. [2021-12-17 16:26:08,914 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 447 transitions. Word has length 65 [2021-12-17 16:26:08,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:08,914 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 447 transitions. [2021-12-17 16:26:08,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:08,915 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 447 transitions. [2021-12-17 16:26:08,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:26:08,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:08,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:08,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 16:26:08,916 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:08,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:08,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1375273345, now seen corresponding path program 1 times [2021-12-17 16:26:08,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:08,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979581384] [2021-12-17 16:26:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:08,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:09,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:09,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979581384] [2021-12-17 16:26:09,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979581384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:09,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:09,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:26:09,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063264171] [2021-12-17 16:26:09,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:09,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:09,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:09,062 INFO L87 Difference]: Start difference. First operand 343 states and 447 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:10,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:10,263 INFO L93 Difference]: Finished difference Result 1320 states and 1844 transitions. [2021-12-17 16:26:10,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:26:10,264 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:26:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:10,269 INFO L225 Difference]: With dead ends: 1320 [2021-12-17 16:26:10,269 INFO L226 Difference]: Without dead ends: 1315 [2021-12-17 16:26:10,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:26:10,270 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 3508 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3508 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:10,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3508 Valid, 1193 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:26:10,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2021-12-17 16:26:10,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 347. [2021-12-17 16:26:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 336 states have (on average 1.3422619047619047) internal successors, (451), 346 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 451 transitions. [2021-12-17 16:26:10,309 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 451 transitions. Word has length 65 [2021-12-17 16:26:10,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:10,309 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 451 transitions. [2021-12-17 16:26:10,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:10,309 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 451 transitions. [2021-12-17 16:26:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:26:10,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:10,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:10,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 16:26:10,311 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:10,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash -636059456, now seen corresponding path program 1 times [2021-12-17 16:26:10,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:10,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144367010] [2021-12-17 16:26:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:10,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:10,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:10,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144367010] [2021-12-17 16:26:10,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144367010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:10,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:10,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:10,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872998819] [2021-12-17 16:26:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:10,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:10,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:10,400 INFO L87 Difference]: Start difference. First operand 347 states and 451 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:10,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:10,781 INFO L93 Difference]: Finished difference Result 684 states and 934 transitions. [2021-12-17 16:26:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 16:26:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:26:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:10,783 INFO L225 Difference]: With dead ends: 684 [2021-12-17 16:26:10,783 INFO L226 Difference]: Without dead ends: 514 [2021-12-17 16:26:10,783 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 [2021-12-17 16:26:10,784 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1189 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:10,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1189 Valid, 892 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:10,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-12-17 16:26:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 347. [2021-12-17 16:26:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 336 states have (on average 1.3363095238095237) internal successors, (449), 346 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 449 transitions. [2021-12-17 16:26:10,808 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 449 transitions. Word has length 65 [2021-12-17 16:26:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:10,809 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 449 transitions. [2021-12-17 16:26:10,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 449 transitions. [2021-12-17 16:26:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:26:10,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:10,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:10,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 16:26:10,810 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:10,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2058271748, now seen corresponding path program 1 times [2021-12-17 16:26:10,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:10,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480534150] [2021-12-17 16:26:10,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:10,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:10,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:10,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480534150] [2021-12-17 16:26:10,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480534150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:10,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:10,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:10,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132460405] [2021-12-17 16:26:10,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:10,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:10,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:10,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:10,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:10,878 INFO L87 Difference]: Start difference. First operand 347 states and 449 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:11,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:11,409 INFO L93 Difference]: Finished difference Result 755 states and 1021 transitions. [2021-12-17 16:26:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:11,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:26:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:11,413 INFO L225 Difference]: With dead ends: 755 [2021-12-17 16:26:11,413 INFO L226 Difference]: Without dead ends: 750 [2021-12-17 16:26:11,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:26:11,414 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1776 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:11,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1776 Valid, 942 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-12-17 16:26:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 347. [2021-12-17 16:26:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 336 states have (on average 1.3303571428571428) internal successors, (447), 346 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:11,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 447 transitions. [2021-12-17 16:26:11,439 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 447 transitions. Word has length 65 [2021-12-17 16:26:11,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:11,440 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 447 transitions. [2021-12-17 16:26:11,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:11,440 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 447 transitions. [2021-12-17 16:26:11,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 16:26:11,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:11,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:11,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 16:26:11,441 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:11,442 INFO L85 PathProgramCache]: Analyzing trace with hash -324498446, now seen corresponding path program 1 times [2021-12-17 16:26:11,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:11,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986656519] [2021-12-17 16:26:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:11,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:11,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:11,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986656519] [2021-12-17 16:26:11,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986656519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:11,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:11,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:11,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357729183] [2021-12-17 16:26:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:11,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:11,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:11,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:11,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:11,517 INFO L87 Difference]: Start difference. First operand 347 states and 447 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:12,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:12,020 INFO L93 Difference]: Finished difference Result 787 states and 1067 transitions. [2021-12-17 16:26:12,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:12,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-17 16:26:12,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:12,023 INFO L225 Difference]: With dead ends: 787 [2021-12-17 16:26:12,023 INFO L226 Difference]: Without dead ends: 770 [2021-12-17 16:26:12,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:26:12,026 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1669 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:12,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 1125 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:12,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-12-17 16:26:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 347. [2021-12-17 16:26:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 336 states have (on average 1.3244047619047619) internal successors, (445), 346 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 445 transitions. [2021-12-17 16:26:12,060 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 445 transitions. Word has length 65 [2021-12-17 16:26:12,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:12,061 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 445 transitions. [2021-12-17 16:26:12,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:12,061 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 445 transitions. [2021-12-17 16:26:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:26:12,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:12,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:12,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 16:26:12,062 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash 50031272, now seen corresponding path program 1 times [2021-12-17 16:26:12,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131362212] [2021-12-17 16:26:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:12,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:12,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:12,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131362212] [2021-12-17 16:26:12,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131362212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:12,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:12,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:12,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964117025] [2021-12-17 16:26:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:12,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:12,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:12,135 INFO L87 Difference]: Start difference. First operand 347 states and 445 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:12,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:12,647 INFO L93 Difference]: Finished difference Result 755 states and 1017 transitions. [2021-12-17 16:26:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:12,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-17 16:26:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:12,650 INFO L225 Difference]: With dead ends: 755 [2021-12-17 16:26:12,650 INFO L226 Difference]: Without dead ends: 750 [2021-12-17 16:26:12,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:12,651 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1635 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:12,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1635 Valid, 1114 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:12,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-12-17 16:26:12,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 343. [2021-12-17 16:26:12,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 332 states have (on average 1.3253012048192772) internal successors, (440), 342 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:12,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 440 transitions. [2021-12-17 16:26:12,678 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 440 transitions. Word has length 66 [2021-12-17 16:26:12,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:12,678 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 440 transitions. [2021-12-17 16:26:12,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:12,678 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 440 transitions. [2021-12-17 16:26:12,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:26:12,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:12,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:12,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 16:26:12,679 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:12,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash -849466761, now seen corresponding path program 1 times [2021-12-17 16:26:12,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:12,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380663571] [2021-12-17 16:26:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:12,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:12,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:12,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380663571] [2021-12-17 16:26:12,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380663571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:12,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:12,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:12,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015613269] [2021-12-17 16:26:12,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:12,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:12,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:12,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:12,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:12,745 INFO L87 Difference]: Start difference. First operand 343 states and 440 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:13,279 INFO L93 Difference]: Finished difference Result 889 states and 1219 transitions. [2021-12-17 16:26:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:13,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-17 16:26:13,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:13,282 INFO L225 Difference]: With dead ends: 889 [2021-12-17 16:26:13,282 INFO L226 Difference]: Without dead ends: 766 [2021-12-17 16:26:13,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:13,283 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 1775 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:13,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1775 Valid, 1211 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-12-17 16:26:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 339. [2021-12-17 16:26:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 328 states have (on average 1.326219512195122) internal successors, (435), 338 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 435 transitions. [2021-12-17 16:26:13,313 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 435 transitions. Word has length 66 [2021-12-17 16:26:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:13,313 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 435 transitions. [2021-12-17 16:26:13,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 435 transitions. [2021-12-17 16:26:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:26:13,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:13,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:13,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 16:26:13,315 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:13,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:13,315 INFO L85 PathProgramCache]: Analyzing trace with hash -809481061, now seen corresponding path program 1 times [2021-12-17 16:26:13,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312660342] [2021-12-17 16:26:13,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:13,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:13,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:13,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312660342] [2021-12-17 16:26:13,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312660342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:13,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:13,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-17 16:26:13,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714009978] [2021-12-17 16:26:13,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:13,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 16:26:13,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 16:26:13,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:26:13,651 INFO L87 Difference]: Start difference. First operand 339 states and 435 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:14,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:14,654 INFO L93 Difference]: Finished difference Result 708 states and 963 transitions. [2021-12-17 16:26:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:26:14,654 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:26:14,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:14,656 INFO L225 Difference]: With dead ends: 708 [2021-12-17 16:26:14,656 INFO L226 Difference]: Without dead ends: 543 [2021-12-17 16:26:14,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2021-12-17 16:26:14,657 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 1538 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:14,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 2412 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:14,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-12-17 16:26:14,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 315. [2021-12-17 16:26:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 305 states have (on average 1.3245901639344262) internal successors, (404), 314 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:14,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 404 transitions. [2021-12-17 16:26:14,685 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 404 transitions. Word has length 67 [2021-12-17 16:26:14,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:14,686 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 404 transitions. [2021-12-17 16:26:14,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:14,686 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 404 transitions. [2021-12-17 16:26:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:26:14,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:14,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:14,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 16:26:14,687 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:14,687 INFO L85 PathProgramCache]: Analyzing trace with hash -827796874, now seen corresponding path program 1 times [2021-12-17 16:26:14,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:14,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587964365] [2021-12-17 16:26:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:14,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:15,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:15,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587964365] [2021-12-17 16:26:15,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587964365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:15,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:15,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-17 16:26:15,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406145619] [2021-12-17 16:26:15,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:15,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-17 16:26:15,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:15,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-17 16:26:15,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:15,239 INFO L87 Difference]: Start difference. First operand 315 states and 404 transitions. Second operand has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:16,999 INFO L93 Difference]: Finished difference Result 650 states and 871 transitions. [2021-12-17 16:26:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 16:26:17,000 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:26:17,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:17,001 INFO L225 Difference]: With dead ends: 650 [2021-12-17 16:26:17,001 INFO L226 Difference]: Without dead ends: 540 [2021-12-17 16:26:17,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2021-12-17 16:26:17,002 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 1616 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 2036 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1616 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 2104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:17,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1616 Valid, 4249 Invalid, 2104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2036 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:26:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-12-17 16:26:17,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 325. [2021-12-17 16:26:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 315 states have (on average 1.33015873015873) internal successors, (419), 324 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 419 transitions. [2021-12-17 16:26:17,032 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 419 transitions. Word has length 67 [2021-12-17 16:26:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:17,032 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 419 transitions. [2021-12-17 16:26:17,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:17,032 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 419 transitions. [2021-12-17 16:26:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:26:17,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:17,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:17,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 16:26:17,033 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:17,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:17,034 INFO L85 PathProgramCache]: Analyzing trace with hash 455689729, now seen corresponding path program 1 times [2021-12-17 16:26:17,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:17,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348760211] [2021-12-17 16:26:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:17,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:17,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:17,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:17,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348760211] [2021-12-17 16:26:17,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348760211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:17,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:17,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:26:17,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703225547] [2021-12-17 16:26:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:17,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:26:17,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:26:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:26:17,267 INFO L87 Difference]: Start difference. First operand 325 states and 419 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:18,058 INFO L93 Difference]: Finished difference Result 801 states and 1052 transitions. [2021-12-17 16:26:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:26:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:26:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:18,060 INFO L225 Difference]: With dead ends: 801 [2021-12-17 16:26:18,060 INFO L226 Difference]: Without dead ends: 797 [2021-12-17 16:26:18,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-12-17 16:26:18,062 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1880 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:18,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 1742 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:18,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-12-17 16:26:18,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 321. [2021-12-17 16:26:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 312 states have (on average 1.330128205128205) internal successors, (415), 320 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 415 transitions. [2021-12-17 16:26:18,112 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 415 transitions. Word has length 67 [2021-12-17 16:26:18,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:18,113 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 415 transitions. [2021-12-17 16:26:18,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 415 transitions. [2021-12-17 16:26:18,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:26:18,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:18,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:18,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 16:26:18,114 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:18,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1324827419, now seen corresponding path program 1 times [2021-12-17 16:26:18,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:18,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368258458] [2021-12-17 16:26:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:18,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:18,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368258458] [2021-12-17 16:26:18,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368258458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:18,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:18,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:26:18,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190446284] [2021-12-17 16:26:18,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:18,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:18,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:18,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:18,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:18,342 INFO L87 Difference]: Start difference. First operand 321 states and 415 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:18,819 INFO L93 Difference]: Finished difference Result 747 states and 1032 transitions. [2021-12-17 16:26:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:26:18,819 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:26:18,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:18,821 INFO L225 Difference]: With dead ends: 747 [2021-12-17 16:26:18,821 INFO L226 Difference]: Without dead ends: 603 [2021-12-17 16:26:18,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:18,822 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 1349 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:18,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 2092 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:18,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-12-17 16:26:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 283. [2021-12-17 16:26:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 276 states have (on average 1.3297101449275361) internal successors, (367), 282 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 367 transitions. [2021-12-17 16:26:18,858 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 367 transitions. Word has length 67 [2021-12-17 16:26:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:18,858 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 367 transitions. [2021-12-17 16:26:18,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 367 transitions. [2021-12-17 16:26:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:26:18,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:18,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:18,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 16:26:18,859 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:18,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:18,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1527682650, now seen corresponding path program 1 times [2021-12-17 16:26:18,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:18,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674192810] [2021-12-17 16:26:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:18,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:19,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:19,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674192810] [2021-12-17 16:26:19,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674192810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:19,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:19,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:26:19,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843801998] [2021-12-17 16:26:19,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:19,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:19,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:19,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:19,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:19,086 INFO L87 Difference]: Start difference. First operand 283 states and 367 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:19,536 INFO L93 Difference]: Finished difference Result 557 states and 750 transitions. [2021-12-17 16:26:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:26:19,555 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:26:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:19,556 INFO L225 Difference]: With dead ends: 557 [2021-12-17 16:26:19,557 INFO L226 Difference]: Without dead ends: 447 [2021-12-17 16:26:19,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:26:19,558 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 885 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:19,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 1212 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-17 16:26:19,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 279. [2021-12-17 16:26:19,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 273 states have (on average 1.326007326007326) internal successors, (362), 278 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 362 transitions. [2021-12-17 16:26:19,596 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 362 transitions. Word has length 68 [2021-12-17 16:26:19,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:19,596 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 362 transitions. [2021-12-17 16:26:19,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 362 transitions. [2021-12-17 16:26:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:26:19,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:19,597 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] [2021-12-17 16:26:19,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 16:26:19,597 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash 986767498, now seen corresponding path program 1 times [2021-12-17 16:26:19,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:19,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754885303] [2021-12-17 16:26:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:19,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:19,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:19,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754885303] [2021-12-17 16:26:19,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754885303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:19,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:19,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:26:19,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37887199] [2021-12-17 16:26:19,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:19,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:19,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:19,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:19,759 INFO L87 Difference]: Start difference. First operand 279 states and 362 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:20,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:20,165 INFO L93 Difference]: Finished difference Result 559 states and 757 transitions. [2021-12-17 16:26:20,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:26:20,165 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:26:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:20,167 INFO L225 Difference]: With dead ends: 559 [2021-12-17 16:26:20,167 INFO L226 Difference]: Without dead ends: 442 [2021-12-17 16:26:20,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-12-17 16:26:20,168 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 656 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:20,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 1278 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:20,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-12-17 16:26:20,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 268. [2021-12-17 16:26:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 263 states have (on average 1.3231939163498099) internal successors, (348), 267 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 348 transitions. [2021-12-17 16:26:20,207 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 348 transitions. Word has length 68 [2021-12-17 16:26:20,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:20,208 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 348 transitions. [2021-12-17 16:26:20,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:20,208 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 348 transitions. [2021-12-17 16:26:20,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:26:20,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:20,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:20,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 16:26:20,209 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:20,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash -922376210, now seen corresponding path program 1 times [2021-12-17 16:26:20,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:20,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217134487] [2021-12-17 16:26:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:20,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:20,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:20,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217134487] [2021-12-17 16:26:20,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217134487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:20,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:20,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:26:20,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096657311] [2021-12-17 16:26:20,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:20,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:20,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:20,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:20,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:20,441 INFO L87 Difference]: Start difference. First operand 268 states and 348 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:20,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:20,934 INFO L93 Difference]: Finished difference Result 534 states and 723 transitions. [2021-12-17 16:26:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:26:20,935 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:26:20,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:20,936 INFO L225 Difference]: With dead ends: 534 [2021-12-17 16:26:20,936 INFO L226 Difference]: Without dead ends: 422 [2021-12-17 16:26:20,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:20,937 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 1000 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:20,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1294 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:20,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-12-17 16:26:20,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 248. [2021-12-17 16:26:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 244 states have (on average 1.3032786885245902) internal successors, (318), 247 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 318 transitions. [2021-12-17 16:26:20,976 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 318 transitions. Word has length 68 [2021-12-17 16:26:20,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:20,977 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 318 transitions. [2021-12-17 16:26:20,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 318 transitions. [2021-12-17 16:26:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:26:20,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:20,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:20,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 16:26:20,978 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash 823611388, now seen corresponding path program 1 times [2021-12-17 16:26:20,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:20,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090470856] [2021-12-17 16:26:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:20,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:21,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:21,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090470856] [2021-12-17 16:26:21,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090470856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:21,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:21,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:21,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026175220] [2021-12-17 16:26:21,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:21,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:21,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:21,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:21,049 INFO L87 Difference]: Start difference. First operand 248 states and 318 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:21,328 INFO L93 Difference]: Finished difference Result 411 states and 538 transitions. [2021-12-17 16:26:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:26:21,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:26:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:21,330 INFO L225 Difference]: With dead ends: 411 [2021-12-17 16:26:21,330 INFO L226 Difference]: Without dead ends: 404 [2021-12-17 16:26:21,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-12-17 16:26:21,331 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 1117 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:21,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 534 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-12-17 16:26:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 248. [2021-12-17 16:26:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 244 states have (on average 1.2991803278688525) internal successors, (317), 247 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 317 transitions. [2021-12-17 16:26:21,372 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 317 transitions. Word has length 68 [2021-12-17 16:26:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:21,372 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 317 transitions. [2021-12-17 16:26:21,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 317 transitions. [2021-12-17 16:26:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:26:21,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:21,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:21,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 16:26:21,374 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:21,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:21,374 INFO L85 PathProgramCache]: Analyzing trace with hash 520441226, now seen corresponding path program 1 times [2021-12-17 16:26:21,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:21,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942262436] [2021-12-17 16:26:21,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:21,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:21,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:21,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942262436] [2021-12-17 16:26:21,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942262436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:21,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:21,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:26:21,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150290064] [2021-12-17 16:26:21,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:21,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:21,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:21,528 INFO L87 Difference]: Start difference. First operand 248 states and 317 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:22,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:22,650 INFO L93 Difference]: Finished difference Result 1516 states and 2150 transitions. [2021-12-17 16:26:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:26:22,650 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:26:22,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:22,653 INFO L225 Difference]: With dead ends: 1516 [2021-12-17 16:26:22,654 INFO L226 Difference]: Without dead ends: 1380 [2021-12-17 16:26:22,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 16:26:22,655 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 3554 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3554 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:22,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3554 Valid, 1313 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:26:22,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2021-12-17 16:26:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 256. [2021-12-17 16:26:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 252 states have (on average 1.2896825396825398) internal successors, (325), 255 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:22,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 325 transitions. [2021-12-17 16:26:22,696 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 325 transitions. Word has length 68 [2021-12-17 16:26:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:22,696 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 325 transitions. [2021-12-17 16:26:22,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 325 transitions. [2021-12-17 16:26:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 16:26:22,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:22,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:22,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 16:26:22,710 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash 601989041, now seen corresponding path program 1 times [2021-12-17 16:26:22,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:22,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620771640] [2021-12-17 16:26:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:22,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:22,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:22,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:22,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620771640] [2021-12-17 16:26:22,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620771640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:22,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:22,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:26:22,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727254061] [2021-12-17 16:26:22,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:22,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:22,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:22,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:22,826 INFO L87 Difference]: Start difference. First operand 256 states and 325 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:23,574 INFO L93 Difference]: Finished difference Result 706 states and 959 transitions. [2021-12-17 16:26:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 16:26:23,574 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-17 16:26:23,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:23,576 INFO L225 Difference]: With dead ends: 706 [2021-12-17 16:26:23,576 INFO L226 Difference]: Without dead ends: 699 [2021-12-17 16:26:23,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2021-12-17 16:26:23,577 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 2659 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:23,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2659 Valid, 602 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:23,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-17 16:26:23,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 260. [2021-12-17 16:26:23,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 256 states have (on average 1.28515625) internal successors, (329), 259 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:23,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 329 transitions. [2021-12-17 16:26:23,617 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 329 transitions. Word has length 69 [2021-12-17 16:26:23,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:23,618 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 329 transitions. [2021-12-17 16:26:23,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:23,618 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 329 transitions. [2021-12-17 16:26:23,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 16:26:23,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:23,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:23,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 16:26:23,623 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:23,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1317093723, now seen corresponding path program 1 times [2021-12-17 16:26:23,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:23,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131218236] [2021-12-17 16:26:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:23,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:23,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:23,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131218236] [2021-12-17 16:26:23,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131218236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:23,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:23,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:23,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945911231] [2021-12-17 16:26:23,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:23,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:23,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:23,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:23,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:23,706 INFO L87 Difference]: Start difference. First operand 260 states and 329 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:24,097 INFO L93 Difference]: Finished difference Result 554 states and 741 transitions. [2021-12-17 16:26:24,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 16:26:24,098 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-17 16:26:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:24,099 INFO L225 Difference]: With dead ends: 554 [2021-12-17 16:26:24,099 INFO L226 Difference]: Without dead ends: 418 [2021-12-17 16:26:24,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-12-17 16:26:24,100 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 737 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:24,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 641 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-12-17 16:26:24,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 252. [2021-12-17 16:26:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 248 states have (on average 1.2862903225806452) internal successors, (319), 251 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 319 transitions. [2021-12-17 16:26:24,138 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 319 transitions. Word has length 69 [2021-12-17 16:26:24,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:24,139 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 319 transitions. [2021-12-17 16:26:24,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,139 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 319 transitions. [2021-12-17 16:26:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 16:26:24,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:24,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:24,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 16:26:24,140 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash -880982966, now seen corresponding path program 1 times [2021-12-17 16:26:24,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:24,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277755340] [2021-12-17 16:26:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:24,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:24,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:24,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277755340] [2021-12-17 16:26:24,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277755340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:24,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:24,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:24,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858730104] [2021-12-17 16:26:24,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:24,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:24,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:24,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:24,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:24,224 INFO L87 Difference]: Start difference. First operand 252 states and 319 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:24,591 INFO L93 Difference]: Finished difference Result 411 states and 534 transitions. [2021-12-17 16:26:24,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 16:26:24,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-17 16:26:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:24,593 INFO L225 Difference]: With dead ends: 411 [2021-12-17 16:26:24,593 INFO L226 Difference]: Without dead ends: 404 [2021-12-17 16:26:24,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-12-17 16:26:24,593 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 438 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:24,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 751 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-12-17 16:26:24,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 248. [2021-12-17 16:26:24,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 244 states have (on average 1.2868852459016393) internal successors, (314), 247 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 314 transitions. [2021-12-17 16:26:24,632 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 314 transitions. Word has length 70 [2021-12-17 16:26:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:24,632 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 314 transitions. [2021-12-17 16:26:24,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,632 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 314 transitions. [2021-12-17 16:26:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 16:26:24,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:24,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:24,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 16:26:24,633 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:24,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1997555533, now seen corresponding path program 1 times [2021-12-17 16:26:24,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:24,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957691305] [2021-12-17 16:26:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:24,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:24,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:24,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957691305] [2021-12-17 16:26:24,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957691305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:24,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:24,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:26:24,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701055804] [2021-12-17 16:26:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:24,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:26:24,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:24,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:26:24,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:26:24,813 INFO L87 Difference]: Start difference. First operand 248 states and 314 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:25,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:25,594 INFO L93 Difference]: Finished difference Result 828 states and 1147 transitions. [2021-12-17 16:26:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 16:26:25,595 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-17 16:26:25,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:25,597 INFO L225 Difference]: With dead ends: 828 [2021-12-17 16:26:25,597 INFO L226 Difference]: Without dead ends: 822 [2021-12-17 16:26:25,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2021-12-17 16:26:25,598 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 1120 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:25,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 3181 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:26:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-12-17 16:26:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 260. [2021-12-17 16:26:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 256 states have (on average 1.2890625) internal successors, (330), 259 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 330 transitions. [2021-12-17 16:26:25,641 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 330 transitions. Word has length 70 [2021-12-17 16:26:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:25,642 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 330 transitions. [2021-12-17 16:26:25,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 330 transitions. [2021-12-17 16:26:25,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 16:26:25,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:25,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:25,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 16:26:25,643 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:25,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:25,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1662348756, now seen corresponding path program 1 times [2021-12-17 16:26:25,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:25,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694785606] [2021-12-17 16:26:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:25,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:26,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:26,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694785606] [2021-12-17 16:26:26,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694785606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:26,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:26,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-12-17 16:26:26,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96852080] [2021-12-17 16:26:26,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:26,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-17 16:26:26,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-17 16:26:26,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:26:26,180 INFO L87 Difference]: Start difference. First operand 260 states and 330 transitions. Second operand has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:27,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:27,622 INFO L93 Difference]: Finished difference Result 314 states and 384 transitions. [2021-12-17 16:26:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-17 16:26:27,622 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-17 16:26:27,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:27,623 INFO L225 Difference]: With dead ends: 314 [2021-12-17 16:26:27,623 INFO L226 Difference]: Without dead ends: 306 [2021-12-17 16:26:27,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2021-12-17 16:26:27,624 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 745 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:27,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 2680 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:26:27,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-12-17 16:26:27,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 269. [2021-12-17 16:26:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 265 states have (on average 1.2867924528301886) internal successors, (341), 268 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:27,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 341 transitions. [2021-12-17 16:26:27,669 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 341 transitions. Word has length 70 [2021-12-17 16:26:27,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:27,669 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 341 transitions. [2021-12-17 16:26:27,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 23 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 341 transitions. [2021-12-17 16:26:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-17 16:26:27,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:27,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:27,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 16:26:27,671 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:27,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:27,672 INFO L85 PathProgramCache]: Analyzing trace with hash 106947905, now seen corresponding path program 1 times [2021-12-17 16:26:27,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:27,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849832616] [2021-12-17 16:26:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:27,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:27,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:27,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849832616] [2021-12-17 16:26:27,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849832616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:27,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:27,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-17 16:26:27,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739503868] [2021-12-17 16:26:27,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:27,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 16:26:27,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:27,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 16:26:27,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:26:27,971 INFO L87 Difference]: Start difference. First operand 269 states and 341 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:28,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:28,658 INFO L93 Difference]: Finished difference Result 269 states and 341 transitions. [2021-12-17 16:26:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 16:26:28,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-17 16:26:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:28,659 INFO L225 Difference]: With dead ends: 269 [2021-12-17 16:26:28,659 INFO L226 Difference]: Without dead ends: 245 [2021-12-17 16:26:28,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:26:28,661 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 437 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:28,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1102 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-12-17 16:26:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-12-17 16:26:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 242 states have (on average 1.3016528925619835) internal successors, (315), 244 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 315 transitions. [2021-12-17 16:26:28,717 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 315 transitions. Word has length 71 [2021-12-17 16:26:28,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:28,717 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 315 transitions. [2021-12-17 16:26:28,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 315 transitions. [2021-12-17 16:26:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-17 16:26:28,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:28,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:28,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 16:26:28,718 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1776801356, now seen corresponding path program 1 times [2021-12-17 16:26:28,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:28,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695618292] [2021-12-17 16:26:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:28,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:28,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:28,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695618292] [2021-12-17 16:26:28,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695618292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:28,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:28,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:26:28,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260714302] [2021-12-17 16:26:28,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:28,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:26:28,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:26:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:26:28,915 INFO L87 Difference]: Start difference. First operand 245 states and 315 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:29,479 INFO L93 Difference]: Finished difference Result 641 states and 878 transitions. [2021-12-17 16:26:29,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:26:29,480 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-17 16:26:29,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:29,481 INFO L225 Difference]: With dead ends: 641 [2021-12-17 16:26:29,481 INFO L226 Difference]: Without dead ends: 626 [2021-12-17 16:26:29,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:26:29,482 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 912 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:29,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 2102 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-12-17 16:26:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 224. [2021-12-17 16:26:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 1.3063063063063063) internal successors, (290), 223 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 290 transitions. [2021-12-17 16:26:29,546 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 290 transitions. Word has length 71 [2021-12-17 16:26:29,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:29,546 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 290 transitions. [2021-12-17 16:26:29,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 290 transitions. [2021-12-17 16:26:29,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-17 16:26:29,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:29,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:29,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 16:26:29,547 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:29,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1979298898, now seen corresponding path program 1 times [2021-12-17 16:26:29,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:29,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267692765] [2021-12-17 16:26:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:29,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:29,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:29,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267692765] [2021-12-17 16:26:29,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267692765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:29,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:29,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:26:29,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014556297] [2021-12-17 16:26:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:29,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:26:29,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:29,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:26:29,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:26:29,778 INFO L87 Difference]: Start difference. First operand 224 states and 290 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:30,552 INFO L93 Difference]: Finished difference Result 1032 states and 1462 transitions. [2021-12-17 16:26:30,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:26:30,553 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-17 16:26:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:30,555 INFO L225 Difference]: With dead ends: 1032 [2021-12-17 16:26:30,555 INFO L226 Difference]: Without dead ends: 1026 [2021-12-17 16:26:30,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:26:30,556 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1349 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:30,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 2629 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:26:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-12-17 16:26:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 206. [2021-12-17 16:26:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.302439024390244) internal successors, (267), 205 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:30,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 267 transitions. [2021-12-17 16:26:30,601 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 267 transitions. Word has length 71 [2021-12-17 16:26:30,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:30,601 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 267 transitions. [2021-12-17 16:26:30,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:30,601 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 267 transitions. [2021-12-17 16:26:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:26:30,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:30,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:30,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 16:26:30,602 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:30,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash 161471129, now seen corresponding path program 1 times [2021-12-17 16:26:30,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:30,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481866737] [2021-12-17 16:26:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:30,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:30,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:30,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481866737] [2021-12-17 16:26:30,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481866737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:30,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:30,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:30,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273130039] [2021-12-17 16:26:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:30,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:30,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:30,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:30,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:30,663 INFO L87 Difference]: Start difference. First operand 206 states and 267 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:31,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:31,001 INFO L93 Difference]: Finished difference Result 1054 states and 1531 transitions. [2021-12-17 16:26:31,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:26:31,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:26:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:31,003 INFO L225 Difference]: With dead ends: 1054 [2021-12-17 16:26:31,003 INFO L226 Difference]: Without dead ends: 948 [2021-12-17 16:26:31,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:26:31,004 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 843 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:31,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 1274 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-12-17 16:26:31,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 310. [2021-12-17 16:26:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 1.3592233009708738) internal successors, (420), 309 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 420 transitions. [2021-12-17 16:26:31,079 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 420 transitions. Word has length 93 [2021-12-17 16:26:31,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:31,079 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 420 transitions. [2021-12-17 16:26:31,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 420 transitions. [2021-12-17 16:26:31,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:26:31,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:31,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:31,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 16:26:31,082 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash -880942767, now seen corresponding path program 1 times [2021-12-17 16:26:31,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:31,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310843477] [2021-12-17 16:26:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:31,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:31,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:31,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310843477] [2021-12-17 16:26:31,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310843477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:31,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:31,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:31,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822370900] [2021-12-17 16:26:31,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:31,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:31,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:31,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:31,129 INFO L87 Difference]: Start difference. First operand 310 states and 420 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:31,498 INFO L93 Difference]: Finished difference Result 1256 states and 1818 transitions. [2021-12-17 16:26:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:31,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:26:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:31,502 INFO L225 Difference]: With dead ends: 1256 [2021-12-17 16:26:31,502 INFO L226 Difference]: Without dead ends: 1046 [2021-12-17 16:26:31,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:31,503 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 650 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:31,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 760 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-12-17 16:26:31,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 518. [2021-12-17 16:26:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 1.4081237911025144) internal successors, (728), 517 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 728 transitions. [2021-12-17 16:26:31,643 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 728 transitions. Word has length 95 [2021-12-17 16:26:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:31,643 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 728 transitions. [2021-12-17 16:26:31,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:31,643 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 728 transitions. [2021-12-17 16:26:31,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:26:31,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:31,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:31,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 16:26:31,645 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:31,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:31,645 INFO L85 PathProgramCache]: Analyzing trace with hash 284809815, now seen corresponding path program 1 times [2021-12-17 16:26:31,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:31,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455904782] [2021-12-17 16:26:31,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:31,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:31,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:31,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455904782] [2021-12-17 16:26:31,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455904782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:31,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:31,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:31,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567319430] [2021-12-17 16:26:31,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:31,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:31,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:31,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:31,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:31,710 INFO L87 Difference]: Start difference. First operand 518 states and 728 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:32,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:32,116 INFO L93 Difference]: Finished difference Result 1464 states and 2126 transitions. [2021-12-17 16:26:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:32,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:26:32,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:32,119 INFO L225 Difference]: With dead ends: 1464 [2021-12-17 16:26:32,119 INFO L226 Difference]: Without dead ends: 1254 [2021-12-17 16:26:32,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:32,120 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 650 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:32,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 708 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:32,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2021-12-17 16:26:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 830. [2021-12-17 16:26:32,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.4342581423401688) internal successors, (1189), 829 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:32,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1189 transitions. [2021-12-17 16:26:32,362 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1189 transitions. Word has length 95 [2021-12-17 16:26:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:32,362 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1189 transitions. [2021-12-17 16:26:32,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:32,362 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1189 transitions. [2021-12-17 16:26:32,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:26:32,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:32,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:32,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 16:26:32,364 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash -736748582, now seen corresponding path program 1 times [2021-12-17 16:26:32,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:32,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265500688] [2021-12-17 16:26:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:32,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:32,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:32,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265500688] [2021-12-17 16:26:32,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265500688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:32,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:32,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:32,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183224630] [2021-12-17 16:26:32,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:32,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:32,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:32,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:32,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:32,435 INFO L87 Difference]: Start difference. First operand 830 states and 1189 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:32,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:32,759 INFO L93 Difference]: Finished difference Result 1562 states and 2270 transitions. [2021-12-17 16:26:32,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:32,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:26:32,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:32,762 INFO L225 Difference]: With dead ends: 1562 [2021-12-17 16:26:32,762 INFO L226 Difference]: Without dead ends: 832 [2021-12-17 16:26:32,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:26:32,763 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 360 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:32,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 384 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:32,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2021-12-17 16:26:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 830. [2021-12-17 16:26:33,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.4246079613992761) internal successors, (1181), 829 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1181 transitions. [2021-12-17 16:26:33,010 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1181 transitions. Word has length 95 [2021-12-17 16:26:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:33,010 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1181 transitions. [2021-12-17 16:26:33,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1181 transitions. [2021-12-17 16:26:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:26:33,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:33,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:33,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-17 16:26:33,012 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:33,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1506041575, now seen corresponding path program 1 times [2021-12-17 16:26:33,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:33,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799151573] [2021-12-17 16:26:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:33,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:33,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:33,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799151573] [2021-12-17 16:26:33,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799151573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:33,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:33,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:33,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153597492] [2021-12-17 16:26:33,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:33,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:33,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:33,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:33,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:33,036 INFO L87 Difference]: Start difference. First operand 830 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:33,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:33,511 INFO L93 Difference]: Finished difference Result 2200 states and 3175 transitions. [2021-12-17 16:26:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:26:33,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:26:33,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:33,517 INFO L225 Difference]: With dead ends: 2200 [2021-12-17 16:26:33,517 INFO L226 Difference]: Without dead ends: 1470 [2021-12-17 16:26:33,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:33,518 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 67 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:33,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 368 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:33,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-12-17 16:26:34,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1468. [2021-12-17 16:26:34,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 1.4137695978186775) internal successors, (2074), 1467 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2074 transitions. [2021-12-17 16:26:34,029 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2074 transitions. Word has length 95 [2021-12-17 16:26:34,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:34,029 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2074 transitions. [2021-12-17 16:26:34,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:34,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2074 transitions. [2021-12-17 16:26:34,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:26:34,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:34,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:34,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-17 16:26:34,030 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:34,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:34,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1675387619, now seen corresponding path program 1 times [2021-12-17 16:26:34,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:34,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824009637] [2021-12-17 16:26:34,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:34,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:34,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824009637] [2021-12-17 16:26:34,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824009637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:34,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:34,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:34,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600062234] [2021-12-17 16:26:34,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:34,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:34,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:34,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:34,107 INFO L87 Difference]: Start difference. First operand 1468 states and 2074 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:35,002 INFO L93 Difference]: Finished difference Result 3038 states and 4335 transitions. [2021-12-17 16:26:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:35,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:26:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:35,007 INFO L225 Difference]: With dead ends: 3038 [2021-12-17 16:26:35,007 INFO L226 Difference]: Without dead ends: 2646 [2021-12-17 16:26:35,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:35,008 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 615 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:35,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 767 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-12-17 16:26:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 1858. [2021-12-17 16:26:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.4184168012924072) internal successors, (2634), 1857 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2634 transitions. [2021-12-17 16:26:35,638 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2634 transitions. Word has length 95 [2021-12-17 16:26:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:35,638 INFO L470 AbstractCegarLoop]: Abstraction has 1858 states and 2634 transitions. [2021-12-17 16:26:35,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2634 transitions. [2021-12-17 16:26:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:26:35,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:35,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:35,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-17 16:26:35,640 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:35,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:35,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1554031907, now seen corresponding path program 1 times [2021-12-17 16:26:35,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:35,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16198513] [2021-12-17 16:26:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:35,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:35,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:35,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16198513] [2021-12-17 16:26:35,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16198513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:35,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:35,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:26:35,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880393988] [2021-12-17 16:26:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:35,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:26:35,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:35,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:26:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:26:35,681 INFO L87 Difference]: Start difference. First operand 1858 states and 2634 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:36,797 INFO L93 Difference]: Finished difference Result 3428 states and 4895 transitions. [2021-12-17 16:26:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 16:26:36,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:26:36,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:36,802 INFO L225 Difference]: With dead ends: 3428 [2021-12-17 16:26:36,802 INFO L226 Difference]: Without dead ends: 3036 [2021-12-17 16:26:36,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:36,803 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 584 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:36,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 816 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3036 states. [2021-12-17 16:26:37,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3036 to 2248. [2021-12-17 16:26:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2248 states, 2247 states have (on average 1.4214508233199823) internal successors, (3194), 2247 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2248 states to 2248 states and 3194 transitions. [2021-12-17 16:26:37,646 INFO L78 Accepts]: Start accepts. Automaton has 2248 states and 3194 transitions. Word has length 95 [2021-12-17 16:26:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:37,659 INFO L470 AbstractCegarLoop]: Abstraction has 2248 states and 3194 transitions. [2021-12-17 16:26:37,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2248 states and 3194 transitions. [2021-12-17 16:26:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:26:37,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:37,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:37,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-17 16:26:37,672 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:37,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:37,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1423537109, now seen corresponding path program 1 times [2021-12-17 16:26:37,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:37,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39303054] [2021-12-17 16:26:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:37,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:37,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:37,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39303054] [2021-12-17 16:26:37,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39303054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:37,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:37,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:37,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620084600] [2021-12-17 16:26:37,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:37,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:37,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:37,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:37,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:37,723 INFO L87 Difference]: Start difference. First operand 2248 states and 3194 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:38,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:38,938 INFO L93 Difference]: Finished difference Result 5708 states and 8130 transitions. [2021-12-17 16:26:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:26:38,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-12-17 16:26:38,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:38,945 INFO L225 Difference]: With dead ends: 5708 [2021-12-17 16:26:38,945 INFO L226 Difference]: Without dead ends: 3560 [2021-12-17 16:26:38,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:38,948 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 78 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:38,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 343 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:38,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2021-12-17 16:26:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3382. [2021-12-17 16:26:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3381 states have (on average 1.4072759538598048) internal successors, (4758), 3381 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 4758 transitions. [2021-12-17 16:26:40,230 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 4758 transitions. Word has length 96 [2021-12-17 16:26:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:40,230 INFO L470 AbstractCegarLoop]: Abstraction has 3382 states and 4758 transitions. [2021-12-17 16:26:40,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 4758 transitions. [2021-12-17 16:26:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:26:40,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:40,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:40,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-17 16:26:40,232 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:40,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1571382276, now seen corresponding path program 1 times [2021-12-17 16:26:40,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:40,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65351180] [2021-12-17 16:26:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:40,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:40,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:40,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65351180] [2021-12-17 16:26:40,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65351180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:40,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:40,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:40,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393888266] [2021-12-17 16:26:40,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:40,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:40,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:40,271 INFO L87 Difference]: Start difference. First operand 3382 states and 4758 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:42,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:42,479 INFO L93 Difference]: Finished difference Result 9682 states and 13594 transitions. [2021-12-17 16:26:42,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:26:42,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:26:42,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:42,488 INFO L225 Difference]: With dead ends: 9682 [2021-12-17 16:26:42,489 INFO L226 Difference]: Without dead ends: 6400 [2021-12-17 16:26:42,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:42,492 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 71 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:42,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 343 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2021-12-17 16:26:44,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 6134. [2021-12-17 16:26:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6134 states, 6133 states have (on average 1.393771400619599) internal successors, (8548), 6133 states have internal predecessors, (8548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 8548 transitions. [2021-12-17 16:26:44,693 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 8548 transitions. Word has length 97 [2021-12-17 16:26:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:44,694 INFO L470 AbstractCegarLoop]: Abstraction has 6134 states and 8548 transitions. [2021-12-17 16:26:44,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 8548 transitions. [2021-12-17 16:26:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:26:44,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:44,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:44,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-17 16:26:44,696 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash 584515800, now seen corresponding path program 1 times [2021-12-17 16:26:44,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:44,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106657372] [2021-12-17 16:26:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:44,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:44,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:44,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106657372] [2021-12-17 16:26:44,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106657372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:44,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:44,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:44,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492481270] [2021-12-17 16:26:44,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:44,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:44,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:44,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:44,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:44,726 INFO L87 Difference]: Start difference. First operand 6134 states and 8548 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:48,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:48,847 INFO L93 Difference]: Finished difference Result 17674 states and 24502 transitions. [2021-12-17 16:26:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:26:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:26:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:48,876 INFO L225 Difference]: With dead ends: 17674 [2021-12-17 16:26:48,876 INFO L226 Difference]: Without dead ends: 11640 [2021-12-17 16:26:48,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:48,881 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 64 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:48,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 342 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:26:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2021-12-17 16:26:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 11110. [2021-12-17 16:26:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11110 states, 11109 states have (on average 1.3745611666216582) internal successors, (15270), 11109 states have internal predecessors, (15270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11110 states to 11110 states and 15270 transitions. [2021-12-17 16:26:52,991 INFO L78 Accepts]: Start accepts. Automaton has 11110 states and 15270 transitions. Word has length 98 [2021-12-17 16:26:52,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:52,992 INFO L470 AbstractCegarLoop]: Abstraction has 11110 states and 15270 transitions. [2021-12-17 16:26:52,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 11110 states and 15270 transitions. [2021-12-17 16:26:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-17 16:26:52,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:52,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:52,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-17 16:26:52,993 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:26:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1344323197, now seen corresponding path program 1 times [2021-12-17 16:26:52,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:52,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179106523] [2021-12-17 16:26:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:52,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:53,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:53,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179106523] [2021-12-17 16:26:53,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179106523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:53,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:53,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:53,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926709697] [2021-12-17 16:26:53,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:53,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:53,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:53,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:53,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:53,022 INFO L87 Difference]: Start difference. First operand 11110 states and 15270 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:27:00,544 INFO L93 Difference]: Finished difference Result 32074 states and 43744 transitions. [2021-12-17 16:27:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:27:00,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-17 16:27:00,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:27:00,580 INFO L225 Difference]: With dead ends: 32074 [2021-12-17 16:27:00,580 INFO L226 Difference]: Without dead ends: 21064 [2021-12-17 16:27:00,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:27:00,591 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 54 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:27:00,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 340 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:27:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21064 states. [2021-12-17 16:27:08,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21064 to 20006. [2021-12-17 16:27:08,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20006 states, 20005 states have (on average 1.3495626093476631) internal successors, (26998), 20005 states have internal predecessors, (26998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20006 states to 20006 states and 26998 transitions. [2021-12-17 16:27:08,114 INFO L78 Accepts]: Start accepts. Automaton has 20006 states and 26998 transitions. Word has length 99 [2021-12-17 16:27:08,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:08,114 INFO L470 AbstractCegarLoop]: Abstraction has 20006 states and 26998 transitions. [2021-12-17 16:27:08,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:08,115 INFO L276 IsEmpty]: Start isEmpty. Operand 20006 states and 26998 transitions. [2021-12-17 16:27:08,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:27:08,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:08,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:08,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-17 16:27:08,116 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:27:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -445596435, now seen corresponding path program 1 times [2021-12-17 16:27:08,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:08,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279944864] [2021-12-17 16:27:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:08,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:08,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:08,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279944864] [2021-12-17 16:27:08,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279944864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:27:08,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:27:08,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:27:08,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484769678] [2021-12-17 16:27:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:27:08,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:27:08,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:08,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:27:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:27:08,176 INFO L87 Difference]: Start difference. First operand 20006 states and 26998 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:20,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:27:20,160 INFO L93 Difference]: Finished difference Result 31016 states and 41652 transitions. [2021-12-17 16:27:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:27:20,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-17 16:27:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:27:20,204 INFO L225 Difference]: With dead ends: 31016 [2021-12-17 16:27:20,204 INFO L226 Difference]: Without dead ends: 31014 [2021-12-17 16:27:20,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:27:20,216 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 257 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:27:20,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 810 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:27:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31014 states. [2021-12-17 16:27:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31014 to 20486. [2021-12-17 16:27:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20486 states, 20485 states have (on average 1.3319990236758603) internal successors, (27286), 20485 states have internal predecessors, (27286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20486 states to 20486 states and 27286 transitions. [2021-12-17 16:27:28,650 INFO L78 Accepts]: Start accepts. Automaton has 20486 states and 27286 transitions. Word has length 100 [2021-12-17 16:27:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:28,650 INFO L470 AbstractCegarLoop]: Abstraction has 20486 states and 27286 transitions. [2021-12-17 16:27:28,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:28,650 INFO L276 IsEmpty]: Start isEmpty. Operand 20486 states and 27286 transitions. [2021-12-17 16:27:28,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-17 16:27:28,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:28,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:28,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-17 16:27:28,651 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:27:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:28,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1981290545, now seen corresponding path program 1 times [2021-12-17 16:27:28,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:28,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43180794] [2021-12-17 16:27:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:28,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:28,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:28,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43180794] [2021-12-17 16:27:28,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43180794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:27:28,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:27:28,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:27:28,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055722396] [2021-12-17 16:27:28,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:27:28,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:27:28,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:27:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:27:28,678 INFO L87 Difference]: Start difference. First operand 20486 states and 27286 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:27:37,040 INFO L93 Difference]: Finished difference Result 41514 states and 55328 transitions. [2021-12-17 16:27:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:27:37,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-17 16:27:37,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:27:37,064 INFO L225 Difference]: With dead ends: 41514 [2021-12-17 16:27:37,065 INFO L226 Difference]: Without dead ends: 21128 [2021-12-17 16:27:37,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:27:37,082 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 87 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:27:37,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 282 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:27:37,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21128 states. [2021-12-17 16:27:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21128 to 21126. [2021-12-17 16:27:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21126 states, 21125 states have (on average 1.3151242603550295) internal successors, (27782), 21125 states have internal predecessors, (27782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21126 states to 21126 states and 27782 transitions. [2021-12-17 16:27:45,658 INFO L78 Accepts]: Start accepts. Automaton has 21126 states and 27782 transitions. Word has length 100 [2021-12-17 16:27:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:45,658 INFO L470 AbstractCegarLoop]: Abstraction has 21126 states and 27782 transitions. [2021-12-17 16:27:45,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 21126 states and 27782 transitions. [2021-12-17 16:27:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-17 16:27:45,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:45,662 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:45,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-17 16:27:45,663 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-17 16:27:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash 642240657, now seen corresponding path program 1 times [2021-12-17 16:27:45,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:45,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573302623] [2021-12-17 16:27:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:45,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:45,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:45,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573302623] [2021-12-17 16:27:45,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573302623] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 16:27:45,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154139500] [2021-12-17 16:27:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:45,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 16:27:45,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:27:45,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 16:27:45,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 16:27:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:45,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 16:27:46,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 16:27:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:46,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 16:27:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:48,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154139500] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 16:27:48,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 16:27:48,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2021-12-17 16:27:48,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815198903] [2021-12-17 16:27:48,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 16:27:48,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-17 16:27:48,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:48,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-17 16:27:48,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-12-17 16:27:48,076 INFO L87 Difference]: Start difference. First operand 21126 states and 27782 transitions. Second operand has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:33:10,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:33:10,236 INFO L93 Difference]: Finished difference Result 587880 states and 755140 transitions. [2021-12-17 16:33:10,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 714 states. [2021-12-17 16:33:10,237 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-12-17 16:33:10,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:33:11,822 INFO L225 Difference]: With dead ends: 587880 [2021-12-17 16:33:11,822 INFO L226 Difference]: Without dead ends: 566854 [2021-12-17 16:33:12,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 739 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253915 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=51762, Invalid=496578, Unknown=0, NotChecked=0, Total=548340 [2021-12-17 16:33:12,042 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 13307 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 7556 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13307 SdHoareTripleChecker+Valid, 6210 SdHoareTripleChecker+Invalid, 8361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 7556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:33:12,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13307 Valid, 6210 Invalid, 8361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 7556 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-17 16:33:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566854 states.