./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.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 700a368a7186f7babba672e6f0e63377b52860406179fc124b8eed545215de4f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:37:01,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:37:01,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:37:01,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:37:01,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:37:01,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:37:01,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:37:01,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:37:01,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:37:01,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:37:01,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:37:01,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:37:01,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:37:01,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:37:01,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:37:01,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:37:01,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:37:01,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:37:01,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:37:01,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:37:01,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:37:01,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:37:01,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:37:01,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:37:01,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:37:01,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:37:01,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:37:01,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:37:01,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:37:01,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:37:01,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:37:01,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:37:01,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:37:01,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:37:01,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:37:01,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:37:01,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:37:01,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:37:01,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:37:01,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:37:01,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:37:01,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:37:01,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:37:01,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:37:01,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:37:01,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:37:01,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:37:01,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:37:01,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:37:01,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:37:01,719 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:37:01,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:37:01,720 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:37:01,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:37:01,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:37:01,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:37:01,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:37:01,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:37:01,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:37:01,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:37:01,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:37:01,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:37:01,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:37:01,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:37:01,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:37:01,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:37:01,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:37:01,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:37:01,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:37:01,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:37:01,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:37:01,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:37:01,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:37:01,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:37:01,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:37:01,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:37:01,723 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 700a368a7186f7babba672e6f0e63377b52860406179fc124b8eed545215de4f [2021-12-15 11:37:01,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:37:01,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:37:01,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:37:01,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:37:01,995 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:37:01,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2021-12-15 11:37:02,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8c1e5ed/3840f47d25f34ebe9ff5cbd8334ef63d/FLAG9ac086acc [2021-12-15 11:37:02,671 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:37:02,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2021-12-15 11:37:02,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8c1e5ed/3840f47d25f34ebe9ff5cbd8334ef63d/FLAG9ac086acc [2021-12-15 11:37:03,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8c1e5ed/3840f47d25f34ebe9ff5cbd8334ef63d [2021-12-15 11:37:03,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:37:03,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:37:03,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:37:03,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:37:03,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:37:03,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:37:03" (1/1) ... [2021-12-15 11:37:03,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2070cd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:03, skipping insertion in model container [2021-12-15 11:37:03,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:37:03" (1/1) ... [2021-12-15 11:37:03,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:37:03,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:37:03,600 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14181,14194] [2021-12-15 11:37:03,639 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18885,18898] [2021-12-15 11:37:03,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20177,20190] [2021-12-15 11:37:03,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20935,20948] [2021-12-15 11:37:03,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22598,22611] [2021-12-15 11:37:03,678 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23356,23369] [2021-12-15 11:37:03,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24485,24498] [2021-12-15 11:37:03,709 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27110,27123] [2021-12-15 11:37:03,712 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27871,27884] [2021-12-15 11:37:03,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29003,29016] [2021-12-15 11:37:03,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31094,31107] [2021-12-15 11:37:03,744 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35189,35202] [2021-12-15 11:37:03,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35950,35963] [2021-12-15 11:37:03,762 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37043,37056] [2021-12-15 11:37:03,774 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39095,39108] [2021-12-15 11:37:03,798 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42827,42840] [2021-12-15 11:37:03,832 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50005,50018] [2021-12-15 11:37:03,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50766,50779] [2021-12-15 11:37:03,847 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51898,51911] [2021-12-15 11:37:03,856 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[53989,54002] [2021-12-15 11:37:03,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57550,57563] [2021-12-15 11:37:03,901 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63548,63561] [2021-12-15 11:37:04,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:37:04,198 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:37:04,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14181,14194] [2021-12-15 11:37:04,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18885,18898] [2021-12-15 11:37:04,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20177,20190] [2021-12-15 11:37:04,301 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20935,20948] [2021-12-15 11:37:04,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22598,22611] [2021-12-15 11:37:04,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23356,23369] [2021-12-15 11:37:04,313 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24485,24498] [2021-12-15 11:37:04,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27110,27123] [2021-12-15 11:37:04,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27871,27884] [2021-12-15 11:37:04,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29003,29016] [2021-12-15 11:37:04,335 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31094,31107] [2021-12-15 11:37:04,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35189,35202] [2021-12-15 11:37:04,349 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35950,35963] [2021-12-15 11:37:04,353 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37043,37056] [2021-12-15 11:37:04,359 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39095,39108] [2021-12-15 11:37:04,369 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42827,42840] [2021-12-15 11:37:04,391 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50005,50018] [2021-12-15 11:37:04,394 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50766,50779] [2021-12-15 11:37:04,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51898,51911] [2021-12-15 11:37:04,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[53989,54002] [2021-12-15 11:37:04,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57550,57563] [2021-12-15 11:37:04,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63548,63561] [2021-12-15 11:37:04,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:37:04,700 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:37:04,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04 WrapperNode [2021-12-15 11:37:04,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:37:04,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:37:04,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:37:04,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:37:04,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:04,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:04,903 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6591 [2021-12-15 11:37:04,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:37:04,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:37:04,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:37:04,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:37:04,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:04,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:04,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:04,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:04,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:05,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:05,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:05,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:37:05,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:37:05,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:37:05,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:37:05,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (1/1) ... [2021-12-15 11:37:05,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:37:05,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:37:05,077 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) [2021-12-15 11:37:05,100 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 [2021-12-15 11:37:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:37:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:37:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:37:05,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:37:05,428 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:37:05,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:37:07,650 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:37:07,672 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:37:07,672 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 11:37:07,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:37:07 BoogieIcfgContainer [2021-12-15 11:37:07,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:37:07,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:37:07,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:37:07,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:37:07,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:37:03" (1/3) ... [2021-12-15 11:37:07,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6c3c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:37:07, skipping insertion in model container [2021-12-15 11:37:07,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:37:04" (2/3) ... [2021-12-15 11:37:07,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6c3c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:37:07, skipping insertion in model container [2021-12-15 11:37:07,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:37:07" (3/3) ... [2021-12-15 11:37:07,688 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2021-12-15 11:37:07,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:37:07,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-12-15 11:37:07,746 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:37:07,751 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 [2021-12-15 11:37:07,752 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-12-15 11:37:07,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 1131 states, 1108 states have (on average 1.855595667870036) internal successors, (2056), 1130 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-15 11:37:07,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:07,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:07,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:07,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1995797141, now seen corresponding path program 1 times [2021-12-15 11:37:07,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:07,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646757083] [2021-12-15 11:37:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:07,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:08,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:08,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646757083] [2021-12-15 11:37:08,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646757083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:08,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:08,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:37:08,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330704012] [2021-12-15 11:37:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:08,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:37:08,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:08,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:37:08,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:37:08,315 INFO L87 Difference]: Start difference. First operand has 1131 states, 1108 states have (on average 1.855595667870036) internal successors, (2056), 1130 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:09,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:09,141 INFO L93 Difference]: Finished difference Result 1715 states and 3012 transitions. [2021-12-15 11:37:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:37:09,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-12-15 11:37:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:09,163 INFO L225 Difference]: With dead ends: 1715 [2021-12-15 11:37:09,163 INFO L226 Difference]: Without dead ends: 920 [2021-12-15 11:37:09,169 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 [2021-12-15 11:37:09,171 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 4621 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:09,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4621 Valid, 1097 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-15 11:37:09,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2021-12-15 11:37:09,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 920. [2021-12-15 11:37:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 898 states have (on average 1.3017817371937639) internal successors, (1169), 919 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1169 transitions. [2021-12-15 11:37:09,241 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1169 transitions. Word has length 86 [2021-12-15 11:37:09,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:09,242 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 1169 transitions. [2021-12-15 11:37:09,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:09,242 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1169 transitions. [2021-12-15 11:37:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-15 11:37:09,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:09,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:09,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:37:09,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1490420377, now seen corresponding path program 1 times [2021-12-15 11:37:09,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:09,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508875897] [2021-12-15 11:37:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:09,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:09,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:09,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508875897] [2021-12-15 11:37:09,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508875897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:09,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:09,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:37:09,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286379753] [2021-12-15 11:37:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:09,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:37:09,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:37:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:37:09,372 INFO L87 Difference]: Start difference. First operand 920 states and 1169 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:09,866 INFO L93 Difference]: Finished difference Result 1495 states and 1962 transitions. [2021-12-15 11:37:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:37:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-12-15 11:37:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:09,870 INFO L225 Difference]: With dead ends: 1495 [2021-12-15 11:37:09,870 INFO L226 Difference]: Without dead ends: 792 [2021-12-15 11:37:09,872 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 [2021-12-15 11:37:09,873 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 2962 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:09,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2962 Valid, 592 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:37:09,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-12-15 11:37:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 792. [2021-12-15 11:37:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 770 states have (on average 1.3298701298701299) internal successors, (1024), 791 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1024 transitions. [2021-12-15 11:37:09,897 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1024 transitions. Word has length 87 [2021-12-15 11:37:09,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:09,899 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1024 transitions. [2021-12-15 11:37:09,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1024 transitions. [2021-12-15 11:37:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-15 11:37:09,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:09,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:09,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 11:37:09,904 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:09,905 INFO L85 PathProgramCache]: Analyzing trace with hash -170044982, now seen corresponding path program 1 times [2021-12-15 11:37:09,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:09,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171810284] [2021-12-15 11:37:09,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:09,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:10,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:10,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171810284] [2021-12-15 11:37:10,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171810284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:10,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:10,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:37:10,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913070208] [2021-12-15 11:37:10,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:10,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:37:10,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:10,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:37:10,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:37:10,037 INFO L87 Difference]: Start difference. First operand 792 states and 1024 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:10,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:10,450 INFO L93 Difference]: Finished difference Result 1367 states and 1816 transitions. [2021-12-15 11:37:10,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:37:10,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-12-15 11:37:10,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:10,454 INFO L225 Difference]: With dead ends: 1367 [2021-12-15 11:37:10,454 INFO L226 Difference]: Without dead ends: 707 [2021-12-15 11:37:10,455 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 [2021-12-15 11:37:10,456 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 2731 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2731 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:10,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2731 Valid, 534 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:37:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-12-15 11:37:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2021-12-15 11:37:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 685 states have (on average 1.3576642335766422) internal successors, (930), 706 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:10,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 930 transitions. [2021-12-15 11:37:10,481 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 930 transitions. Word has length 88 [2021-12-15 11:37:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:10,482 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 930 transitions. [2021-12-15 11:37:10,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 930 transitions. [2021-12-15 11:37:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-15 11:37:10,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:10,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:10,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 11:37:10,485 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash 19097864, now seen corresponding path program 1 times [2021-12-15 11:37:10,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:10,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825482296] [2021-12-15 11:37:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:10,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:10,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:10,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825482296] [2021-12-15 11:37:10,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825482296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:10,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:10,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:37:10,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284011740] [2021-12-15 11:37:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:10,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:37:10,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:37:10,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:37:10,577 INFO L87 Difference]: Start difference. First operand 707 states and 930 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:11,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:11,037 INFO L93 Difference]: Finished difference Result 1282 states and 1721 transitions. [2021-12-15 11:37:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:37:11,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-12-15 11:37:11,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:11,042 INFO L225 Difference]: With dead ends: 1282 [2021-12-15 11:37:11,042 INFO L226 Difference]: Without dead ends: 687 [2021-12-15 11:37:11,043 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 [2021-12-15 11:37:11,046 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 2510 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:11,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2510 Valid, 451 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 11:37:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-12-15 11:37:11,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2021-12-15 11:37:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 665 states have (on average 1.3609022556390977) internal successors, (905), 686 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 905 transitions. [2021-12-15 11:37:11,072 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 905 transitions. Word has length 89 [2021-12-15 11:37:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:11,072 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 905 transitions. [2021-12-15 11:37:11,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 905 transitions. [2021-12-15 11:37:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-15 11:37:11,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:11,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:11,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 11:37:11,079 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:11,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:11,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1199910331, now seen corresponding path program 1 times [2021-12-15 11:37:11,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:11,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509869850] [2021-12-15 11:37:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:11,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:11,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509869850] [2021-12-15 11:37:11,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509869850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:11,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:11,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:37:11,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466869233] [2021-12-15 11:37:11,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:11,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:37:11,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:37:11,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:37:11,189 INFO L87 Difference]: Start difference. First operand 687 states and 905 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:11,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:11,541 INFO L93 Difference]: Finished difference Result 1262 states and 1695 transitions. [2021-12-15 11:37:11,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:37:11,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-12-15 11:37:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:11,545 INFO L225 Difference]: With dead ends: 1262 [2021-12-15 11:37:11,545 INFO L226 Difference]: Without dead ends: 656 [2021-12-15 11:37:11,546 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 [2021-12-15 11:37:11,546 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 2540 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:11,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2540 Valid, 502 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:37:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-12-15 11:37:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2021-12-15 11:37:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 634 states have (on average 1.3738170347003154) internal successors, (871), 655 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 871 transitions. [2021-12-15 11:37:11,570 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 871 transitions. Word has length 90 [2021-12-15 11:37:11,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:11,570 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 871 transitions. [2021-12-15 11:37:11,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:11,571 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 871 transitions. [2021-12-15 11:37:11,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-15 11:37:11,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:11,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:11,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-15 11:37:11,573 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:11,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:11,573 INFO L85 PathProgramCache]: Analyzing trace with hash -270868775, now seen corresponding path program 1 times [2021-12-15 11:37:11,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:11,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547752504] [2021-12-15 11:37:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:11,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:11,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:11,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547752504] [2021-12-15 11:37:11,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547752504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:11,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:11,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:37:11,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129674342] [2021-12-15 11:37:11,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:11,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 11:37:11,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:11,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 11:37:11,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 11:37:11,655 INFO L87 Difference]: Start difference. First operand 656 states and 871 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:11,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:11,992 INFO L93 Difference]: Finished difference Result 1231 states and 1660 transitions. [2021-12-15 11:37:11,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 11:37:11,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-12-15 11:37:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:11,995 INFO L225 Difference]: With dead ends: 1231 [2021-12-15 11:37:11,995 INFO L226 Difference]: Without dead ends: 642 [2021-12-15 11:37:11,996 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 [2021-12-15 11:37:11,999 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 2475 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2475 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:11,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2475 Valid, 496 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 11:37:12,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-12-15 11:37:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-12-15 11:37:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3790322580645162) internal successors, (855), 641 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 855 transitions. [2021-12-15 11:37:12,027 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 855 transitions. Word has length 91 [2021-12-15 11:37:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:12,028 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 855 transitions. [2021-12-15 11:37:12,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:12,028 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 855 transitions. [2021-12-15 11:37:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-15 11:37:12,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:12,030 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] [2021-12-15 11:37:12,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 11:37:12,030 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash 471449544, now seen corresponding path program 1 times [2021-12-15 11:37:12,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:12,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185108036] [2021-12-15 11:37:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:12,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:12,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:12,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185108036] [2021-12-15 11:37:12,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185108036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:12,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:12,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:12,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770890636] [2021-12-15 11:37:12,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:12,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:12,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:12,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:12,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:12,176 INFO L87 Difference]: Start difference. First operand 642 states and 855 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:13,326 INFO L93 Difference]: Finished difference Result 1203 states and 1621 transitions. [2021-12-15 11:37:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:13,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-12-15 11:37:13,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:13,331 INFO L225 Difference]: With dead ends: 1203 [2021-12-15 11:37:13,332 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:13,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:13,334 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 3714 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3714 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:13,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3714 Valid, 2236 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 11:37:13,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3774193548387097) internal successors, (854), 641 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 854 transitions. [2021-12-15 11:37:13,369 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 854 transitions. Word has length 92 [2021-12-15 11:37:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:13,371 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 854 transitions. [2021-12-15 11:37:13,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 854 transitions. [2021-12-15 11:37:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-15 11:37:13,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:13,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:13,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-15 11:37:13,374 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:13,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1530881816, now seen corresponding path program 1 times [2021-12-15 11:37:13,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:13,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662620805] [2021-12-15 11:37:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:13,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:13,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662620805] [2021-12-15 11:37:13,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662620805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:13,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:13,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:13,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569921827] [2021-12-15 11:37:13,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:13,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:13,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:13,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:13,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:13,536 INFO L87 Difference]: Start difference. First operand 642 states and 854 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:14,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:14,894 INFO L93 Difference]: Finished difference Result 1338 states and 1818 transitions. [2021-12-15 11:37:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-12-15 11:37:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:14,899 INFO L225 Difference]: With dead ends: 1338 [2021-12-15 11:37:14,899 INFO L226 Difference]: Without dead ends: 1144 [2021-12-15 11:37:14,900 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 [2021-12-15 11:37:14,901 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 3622 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3622 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:14,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3622 Valid, 2821 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 11:37:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-12-15 11:37:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 642. [2021-12-15 11:37:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3758064516129032) internal successors, (853), 641 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 853 transitions. [2021-12-15 11:37:14,943 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 853 transitions. Word has length 92 [2021-12-15 11:37:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:14,944 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 853 transitions. [2021-12-15 11:37:14,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 853 transitions. [2021-12-15 11:37:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-15 11:37:14,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:14,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:14,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-15 11:37:14,947 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:14,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash 889427447, now seen corresponding path program 1 times [2021-12-15 11:37:14,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:14,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520567013] [2021-12-15 11:37:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:14,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:15,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:15,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:15,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520567013] [2021-12-15 11:37:15,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520567013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:15,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:15,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 11:37:15,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717176426] [2021-12-15 11:37:15,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:15,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-15 11:37:15,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:15,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-15 11:37:15,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-15 11:37:15,056 INFO L87 Difference]: Start difference. First operand 642 states and 853 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:15,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:15,870 INFO L93 Difference]: Finished difference Result 1212 states and 1568 transitions. [2021-12-15 11:37:15,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 11:37:15,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-12-15 11:37:15,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:15,874 INFO L225 Difference]: With dead ends: 1212 [2021-12-15 11:37:15,874 INFO L226 Difference]: Without dead ends: 865 [2021-12-15 11:37:15,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-15 11:37:15,875 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 2795 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2795 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:15,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2795 Valid, 1045 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-15 11:37:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-12-15 11:37:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 642. [2021-12-15 11:37:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3741935483870968) internal successors, (852), 641 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 852 transitions. [2021-12-15 11:37:15,909 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 852 transitions. Word has length 92 [2021-12-15 11:37:15,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:15,909 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 852 transitions. [2021-12-15 11:37:15,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 852 transitions. [2021-12-15 11:37:15,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 11:37:15,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:15,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:15,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-15 11:37:15,911 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:15,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:15,912 INFO L85 PathProgramCache]: Analyzing trace with hash -709696546, now seen corresponding path program 1 times [2021-12-15 11:37:15,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:15,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915508049] [2021-12-15 11:37:15,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:15,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:16,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:16,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915508049] [2021-12-15 11:37:16,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915508049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:16,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:16,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:16,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310351194] [2021-12-15 11:37:16,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:16,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:16,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:16,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:16,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:16,046 INFO L87 Difference]: Start difference. First operand 642 states and 852 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:17,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:17,383 INFO L93 Difference]: Finished difference Result 1367 states and 1842 transitions. [2021-12-15 11:37:17,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:17,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-15 11:37:17,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:17,387 INFO L225 Difference]: With dead ends: 1367 [2021-12-15 11:37:17,387 INFO L226 Difference]: Without dead ends: 1144 [2021-12-15 11:37:17,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:17,389 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 2338 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:17,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 2924 Invalid, 2312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 11:37:17,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-12-15 11:37:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 642. [2021-12-15 11:37:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3725806451612903) internal successors, (851), 641 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 851 transitions. [2021-12-15 11:37:17,427 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 851 transitions. Word has length 94 [2021-12-15 11:37:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:17,428 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 851 transitions. [2021-12-15 11:37:17,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:17,428 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 851 transitions. [2021-12-15 11:37:17,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 11:37:17,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:17,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:17,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-15 11:37:17,430 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:17,431 INFO L85 PathProgramCache]: Analyzing trace with hash -904842275, now seen corresponding path program 1 times [2021-12-15 11:37:17,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:17,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671827416] [2021-12-15 11:37:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:17,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:17,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:17,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671827416] [2021-12-15 11:37:17,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671827416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:17,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:17,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:17,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551126243] [2021-12-15 11:37:17,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:17,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:17,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:17,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:17,574 INFO L87 Difference]: Start difference. First operand 642 states and 851 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:18,788 INFO L93 Difference]: Finished difference Result 1232 states and 1663 transitions. [2021-12-15 11:37:18,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-15 11:37:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:18,792 INFO L225 Difference]: With dead ends: 1232 [2021-12-15 11:37:18,792 INFO L226 Difference]: Without dead ends: 1132 [2021-12-15 11:37:18,793 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 [2021-12-15 11:37:18,794 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 3296 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:18,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3296 Valid, 2625 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-15 11:37:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-15 11:37:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3709677419354838) internal successors, (850), 641 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 850 transitions. [2021-12-15 11:37:18,833 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 850 transitions. Word has length 94 [2021-12-15 11:37:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:18,833 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 850 transitions. [2021-12-15 11:37:18,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 850 transitions. [2021-12-15 11:37:18,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 11:37:18,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:18,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:18,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-15 11:37:18,836 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1510616083, now seen corresponding path program 1 times [2021-12-15 11:37:18,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:18,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21845930] [2021-12-15 11:37:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:18,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:19,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:19,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21845930] [2021-12-15 11:37:19,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21845930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:19,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:19,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:19,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382869646] [2021-12-15 11:37:19,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:19,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:19,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:19,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:19,007 INFO L87 Difference]: Start difference. First operand 642 states and 850 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:20,242 INFO L93 Difference]: Finished difference Result 1279 states and 1729 transitions. [2021-12-15 11:37:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:20,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-15 11:37:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:20,247 INFO L225 Difference]: With dead ends: 1279 [2021-12-15 11:37:20,247 INFO L226 Difference]: Without dead ends: 1140 [2021-12-15 11:37:20,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-15 11:37:20,248 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 3819 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 3288 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:20,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3819 Valid, 3288 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-15 11:37:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 642. [2021-12-15 11:37:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3693548387096774) internal successors, (849), 641 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 849 transitions. [2021-12-15 11:37:20,300 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 849 transitions. Word has length 94 [2021-12-15 11:37:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:20,300 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 849 transitions. [2021-12-15 11:37:20,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:20,300 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 849 transitions. [2021-12-15 11:37:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 11:37:20,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:20,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:20,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-15 11:37:20,302 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:20,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:20,303 INFO L85 PathProgramCache]: Analyzing trace with hash -10217144, now seen corresponding path program 1 times [2021-12-15 11:37:20,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:20,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075752211] [2021-12-15 11:37:20,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:20,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:20,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:20,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075752211] [2021-12-15 11:37:20,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075752211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:20,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:20,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:20,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418817679] [2021-12-15 11:37:20,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:20,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:20,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:20,450 INFO L87 Difference]: Start difference. First operand 642 states and 849 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:21,640 INFO L93 Difference]: Finished difference Result 1279 states and 1731 transitions. [2021-12-15 11:37:21,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:21,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-15 11:37:21,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:21,645 INFO L225 Difference]: With dead ends: 1279 [2021-12-15 11:37:21,645 INFO L226 Difference]: Without dead ends: 1140 [2021-12-15 11:37:21,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:21,647 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 2220 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2220 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:21,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2220 Valid, 3115 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-15 11:37:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 642. [2021-12-15 11:37:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.367741935483871) internal successors, (848), 641 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 848 transitions. [2021-12-15 11:37:21,702 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 848 transitions. Word has length 94 [2021-12-15 11:37:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:21,703 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 848 transitions. [2021-12-15 11:37:21,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 848 transitions. [2021-12-15 11:37:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 11:37:21,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:21,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:21,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-15 11:37:21,705 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1869291794, now seen corresponding path program 1 times [2021-12-15 11:37:21,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:21,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717518500] [2021-12-15 11:37:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:21,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:21,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:21,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717518500] [2021-12-15 11:37:21,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717518500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:21,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:21,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:21,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516027178] [2021-12-15 11:37:21,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:21,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:21,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:21,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:21,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:21,821 INFO L87 Difference]: Start difference. First operand 642 states and 848 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:22,903 INFO L93 Difference]: Finished difference Result 1232 states and 1661 transitions. [2021-12-15 11:37:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:22,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-15 11:37:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:22,909 INFO L225 Difference]: With dead ends: 1232 [2021-12-15 11:37:22,909 INFO L226 Difference]: Without dead ends: 1132 [2021-12-15 11:37:22,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:22,910 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 3940 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3940 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:22,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3940 Valid, 2677 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 11:37:22,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-15 11:37:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-15 11:37:22,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3661290322580646) internal successors, (847), 641 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 847 transitions. [2021-12-15 11:37:22,955 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 847 transitions. Word has length 94 [2021-12-15 11:37:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:22,955 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 847 transitions. [2021-12-15 11:37:22,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 847 transitions. [2021-12-15 11:37:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 11:37:22,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:22,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:22,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-15 11:37:22,958 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:22,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:22,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1072430261, now seen corresponding path program 1 times [2021-12-15 11:37:22,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:22,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941118617] [2021-12-15 11:37:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:22,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:23,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:23,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941118617] [2021-12-15 11:37:23,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941118617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:23,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:23,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:23,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919918231] [2021-12-15 11:37:23,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:23,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:23,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:23,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:23,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:23,073 INFO L87 Difference]: Start difference. First operand 642 states and 847 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:24,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:24,204 INFO L93 Difference]: Finished difference Result 1265 states and 1712 transitions. [2021-12-15 11:37:24,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:24,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-15 11:37:24,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:24,208 INFO L225 Difference]: With dead ends: 1265 [2021-12-15 11:37:24,208 INFO L226 Difference]: Without dead ends: 1140 [2021-12-15 11:37:24,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-15 11:37:24,210 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 4411 mSDsluCounter, 2253 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:24,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4411 Valid, 2939 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 11:37:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-15 11:37:24,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 642. [2021-12-15 11:37:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.364516129032258) internal successors, (846), 641 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 846 transitions. [2021-12-15 11:37:24,252 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 846 transitions. Word has length 94 [2021-12-15 11:37:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:24,252 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 846 transitions. [2021-12-15 11:37:24,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 846 transitions. [2021-12-15 11:37:24,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-15 11:37:24,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:24,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:24,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-15 11:37:24,255 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1752938330, now seen corresponding path program 1 times [2021-12-15 11:37:24,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:24,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757037843] [2021-12-15 11:37:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:24,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:24,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:24,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757037843] [2021-12-15 11:37:24,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757037843] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:24,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:24,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:24,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874433341] [2021-12-15 11:37:24,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:24,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:24,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:24,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:24,375 INFO L87 Difference]: Start difference. First operand 642 states and 846 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:25,617 INFO L93 Difference]: Finished difference Result 1227 states and 1654 transitions. [2021-12-15 11:37:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:25,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-12-15 11:37:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:25,622 INFO L225 Difference]: With dead ends: 1227 [2021-12-15 11:37:25,622 INFO L226 Difference]: Without dead ends: 1132 [2021-12-15 11:37:25,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:25,624 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 3116 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3116 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:25,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3116 Valid, 3117 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-15 11:37:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-15 11:37:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3629032258064515) internal successors, (845), 641 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 845 transitions. [2021-12-15 11:37:25,672 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 845 transitions. Word has length 94 [2021-12-15 11:37:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:25,672 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 845 transitions. [2021-12-15 11:37:25,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 845 transitions. [2021-12-15 11:37:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:25,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:25,674 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] [2021-12-15 11:37:25,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-15 11:37:25,675 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:25,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:25,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1333702137, now seen corresponding path program 1 times [2021-12-15 11:37:25,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:25,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89098037] [2021-12-15 11:37:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:25,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:25,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:25,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89098037] [2021-12-15 11:37:25,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89098037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:25,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:25,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:25,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229619395] [2021-12-15 11:37:25,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:25,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:25,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:25,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:25,844 INFO L87 Difference]: Start difference. First operand 642 states and 845 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:27,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:27,088 INFO L93 Difference]: Finished difference Result 1241 states and 1666 transitions. [2021-12-15 11:37:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:27,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:27,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:27,092 INFO L225 Difference]: With dead ends: 1241 [2021-12-15 11:37:27,092 INFO L226 Difference]: Without dead ends: 1132 [2021-12-15 11:37:27,093 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 [2021-12-15 11:37:27,093 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 3331 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:27,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3331 Valid, 3320 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:27,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-15 11:37:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-15 11:37:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3612903225806452) internal successors, (844), 641 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 844 transitions. [2021-12-15 11:37:27,143 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 844 transitions. Word has length 96 [2021-12-15 11:37:27,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:27,143 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 844 transitions. [2021-12-15 11:37:27,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:27,144 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 844 transitions. [2021-12-15 11:37:27,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:27,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:27,145 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] [2021-12-15 11:37:27,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-15 11:37:27,146 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:27,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash 924856909, now seen corresponding path program 1 times [2021-12-15 11:37:27,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:27,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119705574] [2021-12-15 11:37:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:27,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:27,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:27,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119705574] [2021-12-15 11:37:27,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119705574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:27,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:27,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:27,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596419734] [2021-12-15 11:37:27,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:27,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:27,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:27,265 INFO L87 Difference]: Start difference. First operand 642 states and 844 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:28,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:28,457 INFO L93 Difference]: Finished difference Result 1203 states and 1610 transitions. [2021-12-15 11:37:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:28,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:28,461 INFO L225 Difference]: With dead ends: 1203 [2021-12-15 11:37:28,461 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:28,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:28,462 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 3881 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 2478 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3881 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:28,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3881 Valid, 3185 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2478 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3596774193548387) internal successors, (843), 641 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 843 transitions. [2021-12-15 11:37:28,507 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 843 transitions. Word has length 96 [2021-12-15 11:37:28,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:28,507 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 843 transitions. [2021-12-15 11:37:28,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:28,508 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 843 transitions. [2021-12-15 11:37:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:28,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:28,509 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] [2021-12-15 11:37:28,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-15 11:37:28,510 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash 92967727, now seen corresponding path program 1 times [2021-12-15 11:37:28,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:28,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836980971] [2021-12-15 11:37:28,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:28,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:28,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:28,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836980971] [2021-12-15 11:37:28,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836980971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:28,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:28,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:28,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161494549] [2021-12-15 11:37:28,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:28,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:28,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:28,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:28,614 INFO L87 Difference]: Start difference. First operand 642 states and 843 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:29,716 INFO L93 Difference]: Finished difference Result 1294 states and 1734 transitions. [2021-12-15 11:37:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:29,719 INFO L225 Difference]: With dead ends: 1294 [2021-12-15 11:37:29,720 INFO L226 Difference]: Without dead ends: 1140 [2021-12-15 11:37:29,720 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 [2021-12-15 11:37:29,721 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 3052 mSDsluCounter, 2325 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:29,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3052 Valid, 3134 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 11:37:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-12-15 11:37:29,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 642. [2021-12-15 11:37:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3580645161290323) internal successors, (842), 641 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 842 transitions. [2021-12-15 11:37:29,778 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 842 transitions. Word has length 96 [2021-12-15 11:37:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:29,779 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 842 transitions. [2021-12-15 11:37:29,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 842 transitions. [2021-12-15 11:37:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:29,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:29,781 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] [2021-12-15 11:37:29,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-15 11:37:29,781 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:29,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1818861412, now seen corresponding path program 1 times [2021-12-15 11:37:29,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:29,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638232787] [2021-12-15 11:37:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:29,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:29,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:29,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638232787] [2021-12-15 11:37:29,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638232787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:29,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:29,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:29,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953804339] [2021-12-15 11:37:29,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:29,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:29,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:29,955 INFO L87 Difference]: Start difference. First operand 642 states and 842 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:31,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:31,156 INFO L93 Difference]: Finished difference Result 1203 states and 1607 transitions. [2021-12-15 11:37:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:31,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:31,160 INFO L225 Difference]: With dead ends: 1203 [2021-12-15 11:37:31,160 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:31,160 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 [2021-12-15 11:37:31,161 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 3231 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:31,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3231 Valid, 2721 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:31,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3564516129032258) internal successors, (841), 641 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:31,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 841 transitions. [2021-12-15 11:37:31,214 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 841 transitions. Word has length 96 [2021-12-15 11:37:31,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:31,214 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 841 transitions. [2021-12-15 11:37:31,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:31,215 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 841 transitions. [2021-12-15 11:37:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:31,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:31,216 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] [2021-12-15 11:37:31,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-15 11:37:31,217 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:31,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:31,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1839313585, now seen corresponding path program 1 times [2021-12-15 11:37:31,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:31,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67841382] [2021-12-15 11:37:31,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:31,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:31,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:31,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67841382] [2021-12-15 11:37:31,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67841382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:31,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:31,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:31,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009890826] [2021-12-15 11:37:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:31,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:31,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:31,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:31,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:31,344 INFO L87 Difference]: Start difference. First operand 642 states and 841 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:32,641 INFO L93 Difference]: Finished difference Result 1199 states and 1602 transitions. [2021-12-15 11:37:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:32,641 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:32,644 INFO L225 Difference]: With dead ends: 1199 [2021-12-15 11:37:32,644 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:32,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:32,645 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 3864 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3864 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:32,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3864 Valid, 3189 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 11:37:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:32,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3548387096774193) internal successors, (840), 641 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 840 transitions. [2021-12-15 11:37:32,701 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 840 transitions. Word has length 96 [2021-12-15 11:37:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:32,701 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 840 transitions. [2021-12-15 11:37:32,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 840 transitions. [2021-12-15 11:37:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:32,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:32,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:32,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-15 11:37:32,703 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1859604465, now seen corresponding path program 1 times [2021-12-15 11:37:32,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:32,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495757644] [2021-12-15 11:37:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:32,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:32,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:32,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:32,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495757644] [2021-12-15 11:37:32,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495757644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:32,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:32,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:32,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078893176] [2021-12-15 11:37:32,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:32,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:32,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:32,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:32,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:32,826 INFO L87 Difference]: Start difference. First operand 642 states and 840 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:34,075 INFO L93 Difference]: Finished difference Result 1241 states and 1659 transitions. [2021-12-15 11:37:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:34,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:34,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:34,079 INFO L225 Difference]: With dead ends: 1241 [2021-12-15 11:37:34,079 INFO L226 Difference]: Without dead ends: 1132 [2021-12-15 11:37:34,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:34,085 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 3548 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:34,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3548 Valid, 3403 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-15 11:37:34,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-15 11:37:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.353225806451613) internal successors, (839), 641 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 839 transitions. [2021-12-15 11:37:34,142 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 839 transitions. Word has length 96 [2021-12-15 11:37:34,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:34,142 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 839 transitions. [2021-12-15 11:37:34,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 839 transitions. [2021-12-15 11:37:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:34,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:34,144 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] [2021-12-15 11:37:34,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-15 11:37:34,144 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1450759237, now seen corresponding path program 1 times [2021-12-15 11:37:34,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:34,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879789529] [2021-12-15 11:37:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:34,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:34,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:34,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879789529] [2021-12-15 11:37:34,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879789529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:34,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:34,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:34,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791931044] [2021-12-15 11:37:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:34,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:34,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:34,272 INFO L87 Difference]: Start difference. First operand 642 states and 839 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:35,534 INFO L93 Difference]: Finished difference Result 1203 states and 1603 transitions. [2021-12-15 11:37:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:35,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:35,537 INFO L225 Difference]: With dead ends: 1203 [2021-12-15 11:37:35,537 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:35,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:35,538 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 3818 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3818 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:35,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3818 Valid, 3283 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2515 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:35,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:35,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3516129032258064) internal successors, (838), 641 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:35,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 838 transitions. [2021-12-15 11:37:35,595 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 838 transitions. Word has length 96 [2021-12-15 11:37:35,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:35,595 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 838 transitions. [2021-12-15 11:37:35,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:35,595 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 838 transitions. [2021-12-15 11:37:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:35,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:35,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:35,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-15 11:37:35,597 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:35,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:35,598 INFO L85 PathProgramCache]: Analyzing trace with hash 627769446, now seen corresponding path program 1 times [2021-12-15 11:37:35,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:35,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167876609] [2021-12-15 11:37:35,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:35,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:35,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:35,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167876609] [2021-12-15 11:37:35,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167876609] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:35,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:35,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:35,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436473227] [2021-12-15 11:37:35,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:35,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:35,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:35,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:35,722 INFO L87 Difference]: Start difference. First operand 642 states and 838 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:36,840 INFO L93 Difference]: Finished difference Result 1241 states and 1657 transitions. [2021-12-15 11:37:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:36,843 INFO L225 Difference]: With dead ends: 1241 [2021-12-15 11:37:36,843 INFO L226 Difference]: Without dead ends: 1132 [2021-12-15 11:37:36,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:36,844 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 3731 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3731 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:36,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3731 Valid, 3143 Invalid, 2410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 11:37:36,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-15 11:37:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-15 11:37:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.35) internal successors, (837), 641 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 837 transitions. [2021-12-15 11:37:36,903 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 837 transitions. Word has length 96 [2021-12-15 11:37:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:36,903 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 837 transitions. [2021-12-15 11:37:36,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:36,903 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 837 transitions. [2021-12-15 11:37:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:36,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:36,905 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] [2021-12-15 11:37:36,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-15 11:37:36,905 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:36,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:36,905 INFO L85 PathProgramCache]: Analyzing trace with hash 218924218, now seen corresponding path program 1 times [2021-12-15 11:37:36,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:36,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752741979] [2021-12-15 11:37:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:36,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:37,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:37,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752741979] [2021-12-15 11:37:37,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752741979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:37,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:37,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:37,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520016039] [2021-12-15 11:37:37,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:37,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:37,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:37,020 INFO L87 Difference]: Start difference. First operand 642 states and 837 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:38,383 INFO L93 Difference]: Finished difference Result 1203 states and 1602 transitions. [2021-12-15 11:37:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:38,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:38,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:38,387 INFO L225 Difference]: With dead ends: 1203 [2021-12-15 11:37:38,387 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:38,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:38,388 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 3675 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 2747 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3675 SdHoareTripleChecker+Valid, 3587 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:38,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3675 Valid, 3587 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2747 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 11:37:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3483870967741935) internal successors, (836), 641 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 836 transitions. [2021-12-15 11:37:38,441 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 836 transitions. Word has length 96 [2021-12-15 11:37:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:38,442 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 836 transitions. [2021-12-15 11:37:38,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 836 transitions. [2021-12-15 11:37:38,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:38,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:38,443 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] [2021-12-15 11:37:38,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-15 11:37:38,444 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash 587026393, now seen corresponding path program 1 times [2021-12-15 11:37:38,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:38,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280709451] [2021-12-15 11:37:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:38,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:38,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:38,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280709451] [2021-12-15 11:37:38,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280709451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:38,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:38,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:38,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249939268] [2021-12-15 11:37:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:38,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:38,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:38,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:38,553 INFO L87 Difference]: Start difference. First operand 642 states and 836 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:39,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:39,681 INFO L93 Difference]: Finished difference Result 1203 states and 1601 transitions. [2021-12-15 11:37:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:39,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:39,685 INFO L225 Difference]: With dead ends: 1203 [2021-12-15 11:37:39,685 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:39,686 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 [2021-12-15 11:37:39,686 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 2075 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 2317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:39,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2075 Valid, 2917 Invalid, 2317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 11:37:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:39,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:39,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.346774193548387) internal successors, (835), 641 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:39,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 835 transitions. [2021-12-15 11:37:39,730 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 835 transitions. Word has length 96 [2021-12-15 11:37:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:39,730 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 835 transitions. [2021-12-15 11:37:39,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 835 transitions. [2021-12-15 11:37:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:39,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:39,731 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] [2021-12-15 11:37:39,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-15 11:37:39,731 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1223338080, now seen corresponding path program 1 times [2021-12-15 11:37:39,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:39,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425230128] [2021-12-15 11:37:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:39,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:39,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:39,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425230128] [2021-12-15 11:37:39,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425230128] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:39,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:39,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:39,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808609386] [2021-12-15 11:37:39,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:39,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:39,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:39,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:39,852 INFO L87 Difference]: Start difference. First operand 642 states and 835 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:41,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:41,126 INFO L93 Difference]: Finished difference Result 1199 states and 1595 transitions. [2021-12-15 11:37:41,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:41,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:41,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:41,130 INFO L225 Difference]: With dead ends: 1199 [2021-12-15 11:37:41,131 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:41,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:41,132 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 3756 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 3388 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:41,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3756 Valid, 3388 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:41,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3451612903225807) internal successors, (834), 641 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 834 transitions. [2021-12-15 11:37:41,197 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 834 transitions. Word has length 96 [2021-12-15 11:37:41,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:41,197 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 834 transitions. [2021-12-15 11:37:41,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 834 transitions. [2021-12-15 11:37:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:41,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:41,198 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] [2021-12-15 11:37:41,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-15 11:37:41,199 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:41,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1385819023, now seen corresponding path program 1 times [2021-12-15 11:37:41,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:41,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181248514] [2021-12-15 11:37:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:41,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:41,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:41,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181248514] [2021-12-15 11:37:41,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181248514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:41,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:41,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:41,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172887639] [2021-12-15 11:37:41,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:41,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:41,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:41,309 INFO L87 Difference]: Start difference. First operand 642 states and 834 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:42,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:42,567 INFO L93 Difference]: Finished difference Result 1232 states and 1641 transitions. [2021-12-15 11:37:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:42,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:42,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:42,573 INFO L225 Difference]: With dead ends: 1232 [2021-12-15 11:37:42,574 INFO L226 Difference]: Without dead ends: 1132 [2021-12-15 11:37:42,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:42,575 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 2911 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 2717 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2911 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:42,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2911 Valid, 3666 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2717 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-15 11:37:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 642. [2021-12-15 11:37:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3435483870967742) internal successors, (833), 641 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 833 transitions. [2021-12-15 11:37:42,641 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 833 transitions. Word has length 96 [2021-12-15 11:37:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:42,641 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 833 transitions. [2021-12-15 11:37:42,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 833 transitions. [2021-12-15 11:37:42,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:42,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:42,643 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] [2021-12-15 11:37:42,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-15 11:37:42,643 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:42,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:42,644 INFO L85 PathProgramCache]: Analyzing trace with hash -236760265, now seen corresponding path program 1 times [2021-12-15 11:37:42,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:42,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486227808] [2021-12-15 11:37:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:42,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:42,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:42,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486227808] [2021-12-15 11:37:42,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486227808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:42,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:42,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:42,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399845211] [2021-12-15 11:37:42,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:42,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:42,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:42,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:42,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:42,789 INFO L87 Difference]: Start difference. First operand 642 states and 833 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:44,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:44,169 INFO L93 Difference]: Finished difference Result 1199 states and 1593 transitions. [2021-12-15 11:37:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:44,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:44,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:44,180 INFO L225 Difference]: With dead ends: 1199 [2021-12-15 11:37:44,180 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:44,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:44,181 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 3618 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:44,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3618 Valid, 3675 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 11:37:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:44,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3419354838709678) internal successors, (832), 641 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 832 transitions. [2021-12-15 11:37:44,231 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 832 transitions. Word has length 96 [2021-12-15 11:37:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:44,232 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 832 transitions. [2021-12-15 11:37:44,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:44,232 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 832 transitions. [2021-12-15 11:37:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:44,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:44,232 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] [2021-12-15 11:37:44,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-15 11:37:44,233 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:44,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:44,233 INFO L85 PathProgramCache]: Analyzing trace with hash -35876805, now seen corresponding path program 1 times [2021-12-15 11:37:44,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:44,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553430388] [2021-12-15 11:37:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:44,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:44,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:44,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553430388] [2021-12-15 11:37:44,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553430388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:44,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:44,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:44,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388966178] [2021-12-15 11:37:44,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:44,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:44,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:44,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:44,333 INFO L87 Difference]: Start difference. First operand 642 states and 832 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:45,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:45,546 INFO L93 Difference]: Finished difference Result 1199 states and 1592 transitions. [2021-12-15 11:37:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:45,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:45,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:45,549 INFO L225 Difference]: With dead ends: 1199 [2021-12-15 11:37:45,549 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:45,550 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 [2021-12-15 11:37:45,551 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 2496 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:45,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2496 Valid, 2981 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-15 11:37:45,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:45,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3403225806451613) internal successors, (831), 641 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:45,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 831 transitions. [2021-12-15 11:37:45,615 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 831 transitions. Word has length 96 [2021-12-15 11:37:45,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:45,615 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 831 transitions. [2021-12-15 11:37:45,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:45,615 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 831 transitions. [2021-12-15 11:37:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-15 11:37:45,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:45,616 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] [2021-12-15 11:37:45,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-15 11:37:45,616 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:45,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1688520017, now seen corresponding path program 1 times [2021-12-15 11:37:45,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:45,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610396882] [2021-12-15 11:37:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:45,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:45,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:45,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610396882] [2021-12-15 11:37:45,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610396882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:45,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:45,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:45,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410861587] [2021-12-15 11:37:45,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:45,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:45,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:45,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:45,747 INFO L87 Difference]: Start difference. First operand 642 states and 831 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:47,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:47,064 INFO L93 Difference]: Finished difference Result 1198 states and 1589 transitions. [2021-12-15 11:37:47,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:47,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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 [2021-12-15 11:37:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:47,066 INFO L225 Difference]: With dead ends: 1198 [2021-12-15 11:37:47,066 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:47,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:47,067 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 3617 mSDsluCounter, 2933 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3617 SdHoareTripleChecker+Valid, 3659 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:47,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3617 Valid, 3659 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 2769 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:47,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:47,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3387096774193548) internal successors, (830), 641 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 830 transitions. [2021-12-15 11:37:47,114 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 830 transitions. Word has length 96 [2021-12-15 11:37:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:47,114 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 830 transitions. [2021-12-15 11:37:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 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) [2021-12-15 11:37:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 830 transitions. [2021-12-15 11:37:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-15 11:37:47,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:47,115 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] [2021-12-15 11:37:47,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-15 11:37:47,116 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1799558176, now seen corresponding path program 1 times [2021-12-15 11:37:47,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:47,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666556590] [2021-12-15 11:37:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:47,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:47,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666556590] [2021-12-15 11:37:47,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666556590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:47,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:47,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:47,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847156529] [2021-12-15 11:37:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:47,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:47,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:47,228 INFO L87 Difference]: Start difference. First operand 642 states and 830 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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) [2021-12-15 11:37:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:48,480 INFO L93 Difference]: Finished difference Result 1164 states and 1531 transitions. [2021-12-15 11:37:48,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:48,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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 [2021-12-15 11:37:48,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:48,483 INFO L225 Difference]: With dead ends: 1164 [2021-12-15 11:37:48,483 INFO L226 Difference]: Without dead ends: 1084 [2021-12-15 11:37:48,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:48,484 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 3749 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3749 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:48,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3749 Valid, 3024 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:48,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-15 11:37:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 642. [2021-12-15 11:37:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3370967741935484) internal successors, (829), 641 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 829 transitions. [2021-12-15 11:37:48,549 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 829 transitions. Word has length 98 [2021-12-15 11:37:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:48,550 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 829 transitions. [2021-12-15 11:37:48,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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) [2021-12-15 11:37:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 829 transitions. [2021-12-15 11:37:48,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-15 11:37:48,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:48,552 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] [2021-12-15 11:37:48,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-15 11:37:48,552 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash 112638926, now seen corresponding path program 1 times [2021-12-15 11:37:48,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:48,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586544574] [2021-12-15 11:37:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:48,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:48,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:48,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586544574] [2021-12-15 11:37:48,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586544574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:48,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:48,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:48,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834201340] [2021-12-15 11:37:48,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:48,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:48,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:48,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:48,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:48,652 INFO L87 Difference]: Start difference. First operand 642 states and 829 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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) [2021-12-15 11:37:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:49,892 INFO L93 Difference]: Finished difference Result 1208 states and 1595 transitions. [2021-12-15 11:37:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:49,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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 [2021-12-15 11:37:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:49,894 INFO L225 Difference]: With dead ends: 1208 [2021-12-15 11:37:49,894 INFO L226 Difference]: Without dead ends: 1116 [2021-12-15 11:37:49,895 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 [2021-12-15 11:37:49,895 INFO L933 BasicCegarLoop]: 735 mSDtfsCounter, 3913 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:49,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3913 Valid, 2971 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:49,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-15 11:37:49,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 642. [2021-12-15 11:37:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.335483870967742) internal successors, (828), 641 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:49,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 828 transitions. [2021-12-15 11:37:49,960 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 828 transitions. Word has length 98 [2021-12-15 11:37:49,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:49,961 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 828 transitions. [2021-12-15 11:37:49,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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) [2021-12-15 11:37:49,961 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 828 transitions. [2021-12-15 11:37:49,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-15 11:37:49,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:49,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:49,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-15 11:37:49,962 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1288712520, now seen corresponding path program 1 times [2021-12-15 11:37:49,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:49,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469941547] [2021-12-15 11:37:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:49,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:50,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:50,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469941547] [2021-12-15 11:37:50,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469941547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:50,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:50,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:50,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927814398] [2021-12-15 11:37:50,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:50,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:50,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:50,079 INFO L87 Difference]: Start difference. First operand 642 states and 828 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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) [2021-12-15 11:37:51,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:51,388 INFO L93 Difference]: Finished difference Result 1161 states and 1526 transitions. [2021-12-15 11:37:51,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 11:37:51,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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 [2021-12-15 11:37:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:51,390 INFO L225 Difference]: With dead ends: 1161 [2021-12-15 11:37:51,391 INFO L226 Difference]: Without dead ends: 1084 [2021-12-15 11:37:51,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-15 11:37:51,392 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 2870 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2870 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:51,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2870 Valid, 3287 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-15 11:37:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-15 11:37:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 642. [2021-12-15 11:37:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 620 states have (on average 1.3338709677419356) internal successors, (827), 641 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 827 transitions. [2021-12-15 11:37:51,446 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 827 transitions. Word has length 98 [2021-12-15 11:37:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:51,446 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 827 transitions. [2021-12-15 11:37:51,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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) [2021-12-15 11:37:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 827 transitions. [2021-12-15 11:37:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-15 11:37:51,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:51,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:37:51,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-15 11:37:51,447 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:51,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1740272545, now seen corresponding path program 1 times [2021-12-15 11:37:51,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:51,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839460354] [2021-12-15 11:37:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:51,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:51,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:51,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839460354] [2021-12-15 11:37:51,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839460354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:51,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:51,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-15 11:37:51,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597972936] [2021-12-15 11:37:51,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:51,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 11:37:51,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 11:37:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-15 11:37:51,645 INFO L87 Difference]: Start difference. First operand 642 states and 827 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 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) [2021-12-15 11:37:53,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:37:53,848 INFO L93 Difference]: Finished difference Result 1545 states and 2073 transitions. [2021-12-15 11:37:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 11:37:53,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 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 [2021-12-15 11:37:53,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:37:53,851 INFO L225 Difference]: With dead ends: 1545 [2021-12-15 11:37:53,851 INFO L226 Difference]: Without dead ends: 1465 [2021-12-15 11:37:53,851 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 [2021-12-15 11:37:53,852 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 6892 mSDsluCounter, 2648 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6892 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 3678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 927 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-15 11:37:53,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6892 Valid, 3315 Invalid, 3678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [927 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-15 11:37:53,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2021-12-15 11:37:53,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 646. [2021-12-15 11:37:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 624 states have (on average 1.3317307692307692) internal successors, (831), 645 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 11:37:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 831 transitions. [2021-12-15 11:37:53,920 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 831 transitions. Word has length 98 [2021-12-15 11:37:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:37:53,920 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 831 transitions. [2021-12-15 11:37:53,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 11 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) [2021-12-15 11:37:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 831 transitions. [2021-12-15 11:37:53,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-15 11:37:53,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:37:53,922 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] [2021-12-15 11:37:53,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-15 11:37:53,922 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2021-12-15 11:37:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:37:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash -285632464, now seen corresponding path program 1 times [2021-12-15 11:37:53,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:37:53,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580334627] [2021-12-15 11:37:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:37:53,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:37:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:37:54,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:37:54,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:37:54,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580334627] [2021-12-15 11:37:54,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580334627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:37:54,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:37:54,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 11:37:54,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146514532] [2021-12-15 11:37:54,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:37:54,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 11:37:54,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:37:54,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 11:37:54,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-15 11:37:54,035 INFO L87 Difference]: Start difference. First operand 646 states and 831 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 8 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)