./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-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 5990b1cf211e12a23ca85722a0e539783495fb8504bce43e0d5e789fe089f178 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:49:12,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:49:12,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:49:12,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:49:12,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:49:12,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:49:12,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:49:12,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:49:12,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:49:12,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:49:12,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:49:12,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:49:12,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:49:12,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:49:12,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:49:12,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:49:12,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:49:12,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:49:12,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:49:12,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:49:12,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:49:12,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:49:12,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:49:12,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:49:12,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:49:12,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:49:12,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:49:12,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:49:12,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:49:12,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:49:12,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:49:12,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:49:12,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:49:12,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:49:12,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:49:12,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:49:12,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:49:12,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:49:12,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:49:12,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:49:12,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:49:12,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:49:12,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:49:12,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:49:12,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:49:12,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:49:12,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:49:12,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:49:12,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:49:12,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:49:12,810 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:49:12,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:49:12,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:49:12,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:49:12,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:49:12,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:49:12,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:49:12,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:49:12,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:49:12,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:49:12,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:49:12,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:49:12,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:49:12,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:49:12,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:49:12,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:49:12,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:49:12,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:49:12,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:49:12,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:49:12,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:49:12,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:49:12,814 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:49:12,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:49:12,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:49:12,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:49:12,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5990b1cf211e12a23ca85722a0e539783495fb8504bce43e0d5e789fe089f178 [2021-12-21 13:49:12,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:49:13,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:49:13,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:49:13,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:49:13,011 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:49:13,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-12-21 13:49:13,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531b21498/777347eb5ffc429d856ad5e4684ef06c/FLAG62423cfbf [2021-12-21 13:49:13,516 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:49:13,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-12-21 13:49:13,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531b21498/777347eb5ffc429d856ad5e4684ef06c/FLAG62423cfbf [2021-12-21 13:49:13,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531b21498/777347eb5ffc429d856ad5e4684ef06c [2021-12-21 13:49:13,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:49:13,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:49:13,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:49:13,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:49:13,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:49:13,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:49:13" (1/1) ... [2021-12-21 13:49:13,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@506e95c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:13, skipping insertion in model container [2021-12-21 13:49:13,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:49:13" (1/1) ... [2021-12-21 13:49:13,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:49:13,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:49:14,155 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18815,18828] [2021-12-21 13:49:14,183 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25895,25908] [2021-12-21 13:49:14,194 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29420,29433] [2021-12-21 13:49:14,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32798,32811] [2021-12-21 13:49:14,233 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36856,36869] [2021-12-21 13:49:14,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40310,40323] [2021-12-21 13:49:14,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43875,43888] [2021-12-21 13:49:14,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47290,47303] [2021-12-21 13:49:14,288 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50969,50982] [2021-12-21 13:49:14,308 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.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54551,54564] [2021-12-21 13:49:14,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58080,58093] [2021-12-21 13:49:14,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:49:14,368 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:49:14,442 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[18815,18828] [2021-12-21 13:49:14,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[25895,25908] [2021-12-21 13:49:14,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[29420,29433] [2021-12-21 13:49:14,487 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[32798,32811] [2021-12-21 13:49:14,496 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[36856,36869] [2021-12-21 13:49:14,502 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[40310,40323] [2021-12-21 13:49:14,516 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[43875,43888] [2021-12-21 13:49:14,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[47290,47303] [2021-12-21 13:49:14,537 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[50969,50982] [2021-12-21 13:49:14,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[54551,54564] [2021-12-21 13:49:14,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c[58080,58093] [2021-12-21 13:49:14,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:49:14,575 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:49:14,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14 WrapperNode [2021-12-21 13:49:14,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:49:14,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:49:14,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:49:14,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:49:14,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,656 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2761 [2021-12-21 13:49:14,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:49:14,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:49:14,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:49:14,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:49:14,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:49:14,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:49:14,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:49:14,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:49:14,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (1/1) ... [2021-12-21 13:49:14,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:49:14,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:49:14,770 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) [2021-12-21 13:49:14,787 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 [2021-12-21 13:49:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:49:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:49:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:49:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:49:14,973 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:49:14,974 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:49:15,877 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:49:15,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:49:15,886 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 13:49:15,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:49:15 BoogieIcfgContainer [2021-12-21 13:49:15,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:49:15,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:49:15,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:49:15,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:49:15,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:49:13" (1/3) ... [2021-12-21 13:49:15,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33aa10a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:49:15, skipping insertion in model container [2021-12-21 13:49:15,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:49:14" (2/3) ... [2021-12-21 13:49:15,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33aa10a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:49:15, skipping insertion in model container [2021-12-21 13:49:15,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:49:15" (3/3) ... [2021-12-21 13:49:15,894 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+sep-reducer.c [2021-12-21 13:49:15,897 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:49:15,898 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-21 13:49:15,929 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:49:15,933 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 [2021-12-21 13:49:15,934 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-21 13:49:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 558 states have (on average 1.7831541218637992) internal successors, (995), 569 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:15,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-21 13:49:15,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:15,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:15,962 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:15,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:15,966 INFO L85 PathProgramCache]: Analyzing trace with hash 646480323, now seen corresponding path program 1 times [2021-12-21 13:49:15,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:15,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451432340] [2021-12-21 13:49:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:15,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:16,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:16,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451432340] [2021-12-21 13:49:16,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451432340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:16,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:16,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:49:16,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6584921] [2021-12-21 13:49:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:16,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:49:16,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:16,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:49:16,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:49:16,362 INFO L87 Difference]: Start difference. First operand has 570 states, 558 states have (on average 1.7831541218637992) internal successors, (995), 569 states have internal predecessors, (995), 0 states have call successors, (0), 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 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:16,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:16,784 INFO L93 Difference]: Finished difference Result 785 states and 1334 transitions. [2021-12-21 13:49:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:49:16,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-21 13:49:16,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:16,795 INFO L225 Difference]: With dead ends: 785 [2021-12-21 13:49:16,795 INFO L226 Difference]: Without dead ends: 503 [2021-12-21 13:49:16,798 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 [2021-12-21 13:49:16,800 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 2416 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2416 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:16,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2416 Valid, 551 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:49:16,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-21 13:49:16,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2021-12-21 13:49:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 492 states have (on average 1.274390243902439) internal successors, (627), 502 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:16,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 627 transitions. [2021-12-21 13:49:16,860 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 627 transitions. Word has length 60 [2021-12-21 13:49:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:16,861 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 627 transitions. [2021-12-21 13:49:16,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 627 transitions. [2021-12-21 13:49:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-21 13:49:16,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:16,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:16,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:49:16,864 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash 221242932, now seen corresponding path program 1 times [2021-12-21 13:49:16,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:16,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276413035] [2021-12-21 13:49:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:16,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:16,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:16,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276413035] [2021-12-21 13:49:16,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276413035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:16,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:16,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:49:16,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317637892] [2021-12-21 13:49:16,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:16,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:49:16,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:16,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:49:16,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:49:16,926 INFO L87 Difference]: Start difference. First operand 503 states and 627 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:17,142 INFO L93 Difference]: Finished difference Result 637 states and 796 transitions. [2021-12-21 13:49:17,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:49:17,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-21 13:49:17,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:17,144 INFO L225 Difference]: With dead ends: 637 [2021-12-21 13:49:17,144 INFO L226 Difference]: Without dead ends: 381 [2021-12-21 13:49:17,145 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 [2021-12-21 13:49:17,146 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1366 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:17,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 266 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:49:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-21 13:49:17,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2021-12-21 13:49:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 370 states have (on average 1.2864864864864864) internal successors, (476), 380 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 476 transitions. [2021-12-21 13:49:17,163 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 476 transitions. Word has length 60 [2021-12-21 13:49:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:17,163 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 476 transitions. [2021-12-21 13:49:17,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 476 transitions. [2021-12-21 13:49:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-21 13:49:17,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:17,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:17,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:49:17,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:17,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2147344789, now seen corresponding path program 1 times [2021-12-21 13:49:17,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:17,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196465164] [2021-12-21 13:49:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:17,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:17,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:17,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196465164] [2021-12-21 13:49:17,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196465164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:17,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:17,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:49:17,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031332569] [2021-12-21 13:49:17,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:17,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:49:17,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:17,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:49:17,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:49:17,244 INFO L87 Difference]: Start difference. First operand 381 states and 476 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:17,424 INFO L93 Difference]: Finished difference Result 539 states and 682 transitions. [2021-12-21 13:49:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:49:17,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-21 13:49:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:17,426 INFO L225 Difference]: With dead ends: 539 [2021-12-21 13:49:17,426 INFO L226 Difference]: Without dead ends: 335 [2021-12-21 13:49:17,427 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 [2021-12-21 13:49:17,428 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 1218 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:17,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 240 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:49:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-12-21 13:49:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-12-21 13:49:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 324 states have (on average 1.2993827160493827) internal successors, (421), 334 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 421 transitions. [2021-12-21 13:49:17,444 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 421 transitions. Word has length 60 [2021-12-21 13:49:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:17,445 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 421 transitions. [2021-12-21 13:49:17,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 421 transitions. [2021-12-21 13:49:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-21 13:49:17,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:17,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:17,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:49:17,447 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash 604643521, now seen corresponding path program 1 times [2021-12-21 13:49:17,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:17,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609319482] [2021-12-21 13:49:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:17,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:17,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:17,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609319482] [2021-12-21 13:49:17,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609319482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:17,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:17,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:49:17,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179567680] [2021-12-21 13:49:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:17,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:49:17,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:49:17,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:49:17,531 INFO L87 Difference]: Start difference. First operand 335 states and 421 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:17,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:17,698 INFO L93 Difference]: Finished difference Result 433 states and 540 transitions. [2021-12-21 13:49:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:49:17,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-12-21 13:49:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:17,700 INFO L225 Difference]: With dead ends: 433 [2021-12-21 13:49:17,700 INFO L226 Difference]: Without dead ends: 261 [2021-12-21 13:49:17,700 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 [2021-12-21 13:49:17,701 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 899 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:17,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 209 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:49:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-21 13:49:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2021-12-21 13:49:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.296) internal successors, (324), 260 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 324 transitions. [2021-12-21 13:49:17,720 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 324 transitions. Word has length 62 [2021-12-21 13:49:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:17,721 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 324 transitions. [2021-12-21 13:49:17,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 324 transitions. [2021-12-21 13:49:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 13:49:17,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:17,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:17,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 13:49:17,723 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash -699288056, now seen corresponding path program 1 times [2021-12-21 13:49:17,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:17,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724772410] [2021-12-21 13:49:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:17,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:17,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:17,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724772410] [2021-12-21 13:49:17,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724772410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:17,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:17,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:17,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152333231] [2021-12-21 13:49:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:17,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:17,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:17,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:17,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:17,867 INFO L87 Difference]: Start difference. First operand 261 states and 324 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:18,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:18,455 INFO L93 Difference]: Finished difference Result 607 states and 794 transitions. [2021-12-21 13:49:18,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:49:18,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-21 13:49:18,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:18,457 INFO L225 Difference]: With dead ends: 607 [2021-12-21 13:49:18,458 INFO L226 Difference]: Without dead ends: 515 [2021-12-21 13:49:18,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:49:18,459 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 1630 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:18,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1630 Valid, 925 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:49:18,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-12-21 13:49:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 261. [2021-12-21 13:49:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.292) internal successors, (323), 260 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 323 transitions. [2021-12-21 13:49:18,497 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 323 transitions. Word has length 64 [2021-12-21 13:49:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:18,498 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 323 transitions. [2021-12-21 13:49:18,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 323 transitions. [2021-12-21 13:49:18,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 13:49:18,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:18,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:18,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:49:18,499 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:18,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1796013608, now seen corresponding path program 1 times [2021-12-21 13:49:18,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:18,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285559279] [2021-12-21 13:49:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:18,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:18,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:18,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285559279] [2021-12-21 13:49:18,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285559279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:18,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:18,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:18,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108104214] [2021-12-21 13:49:18,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:18,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:18,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:18,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:18,610 INFO L87 Difference]: Start difference. First operand 261 states and 323 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:19,140 INFO L93 Difference]: Finished difference Result 579 states and 758 transitions. [2021-12-21 13:49:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:49:19,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-21 13:49:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:19,143 INFO L225 Difference]: With dead ends: 579 [2021-12-21 13:49:19,143 INFO L226 Difference]: Without dead ends: 511 [2021-12-21 13:49:19,143 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 [2021-12-21 13:49:19,144 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1916 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:19,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1916 Valid, 1070 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:49:19,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-12-21 13:49:19,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 261. [2021-12-21 13:49:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.288) internal successors, (322), 260 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 322 transitions. [2021-12-21 13:49:19,181 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 322 transitions. Word has length 64 [2021-12-21 13:49:19,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:19,182 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 322 transitions. [2021-12-21 13:49:19,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 322 transitions. [2021-12-21 13:49:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 13:49:19,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:19,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:19,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:49:19,183 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:19,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1577721816, now seen corresponding path program 1 times [2021-12-21 13:49:19,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:19,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767061103] [2021-12-21 13:49:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:19,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:19,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:19,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767061103] [2021-12-21 13:49:19,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767061103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:19,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:19,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:49:19,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491773254] [2021-12-21 13:49:19,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:19,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:49:19,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:19,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:49:19,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:49:19,296 INFO L87 Difference]: Start difference. First operand 261 states and 322 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:19,559 INFO L93 Difference]: Finished difference Result 516 states and 638 transitions. [2021-12-21 13:49:19,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:49:19,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-21 13:49:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:19,561 INFO L225 Difference]: With dead ends: 516 [2021-12-21 13:49:19,561 INFO L226 Difference]: Without dead ends: 375 [2021-12-21 13:49:19,562 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 [2021-12-21 13:49:19,562 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1543 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:19,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 484 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:49:19,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-21 13:49:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 261. [2021-12-21 13:49:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.284) internal successors, (321), 260 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 321 transitions. [2021-12-21 13:49:19,581 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 321 transitions. Word has length 64 [2021-12-21 13:49:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:19,581 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 321 transitions. [2021-12-21 13:49:19,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:19,581 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 321 transitions. [2021-12-21 13:49:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 13:49:19,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:19,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:19,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:49:19,582 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:19,583 INFO L85 PathProgramCache]: Analyzing trace with hash -295025225, now seen corresponding path program 1 times [2021-12-21 13:49:19,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:19,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29409317] [2021-12-21 13:49:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:19,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:19,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:19,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29409317] [2021-12-21 13:49:19,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29409317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:19,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:19,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:19,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977213270] [2021-12-21 13:49:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:19,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:19,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:19,700 INFO L87 Difference]: Start difference. First operand 261 states and 321 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:20,206 INFO L93 Difference]: Finished difference Result 560 states and 727 transitions. [2021-12-21 13:49:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:49:20,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-21 13:49:20,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:20,209 INFO L225 Difference]: With dead ends: 560 [2021-12-21 13:49:20,209 INFO L226 Difference]: Without dead ends: 503 [2021-12-21 13:49:20,209 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 [2021-12-21 13:49:20,210 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1899 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:20,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1899 Valid, 985 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:49:20,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-21 13:49:20,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 261. [2021-12-21 13:49:20,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.28) internal successors, (320), 260 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:20,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 320 transitions. [2021-12-21 13:49:20,230 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 320 transitions. Word has length 65 [2021-12-21 13:49:20,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:20,230 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 320 transitions. [2021-12-21 13:49:20,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:20,230 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 320 transitions. [2021-12-21 13:49:20,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 13:49:20,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:20,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:20,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:49:20,231 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:20,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:20,232 INFO L85 PathProgramCache]: Analyzing trace with hash -168692467, now seen corresponding path program 1 times [2021-12-21 13:49:20,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:20,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349612119] [2021-12-21 13:49:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:20,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:20,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:20,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349612119] [2021-12-21 13:49:20,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349612119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:20,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:20,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:20,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698172410] [2021-12-21 13:49:20,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:20,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:20,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:20,319 INFO L87 Difference]: Start difference. First operand 261 states and 320 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:20,827 INFO L93 Difference]: Finished difference Result 530 states and 680 transitions. [2021-12-21 13:49:20,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:49:20,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-21 13:49:20,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:20,829 INFO L225 Difference]: With dead ends: 530 [2021-12-21 13:49:20,829 INFO L226 Difference]: Without dead ends: 511 [2021-12-21 13:49:20,830 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 [2021-12-21 13:49:20,830 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 1848 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:20,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1848 Valid, 1103 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:49:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-12-21 13:49:20,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 261. [2021-12-21 13:49:20,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.276) internal successors, (319), 260 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:20,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 319 transitions. [2021-12-21 13:49:20,850 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 319 transitions. Word has length 66 [2021-12-21 13:49:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:20,850 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 319 transitions. [2021-12-21 13:49:20,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 319 transitions. [2021-12-21 13:49:20,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 13:49:20,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:20,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:20,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:49:20,852 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:20,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1424145869, now seen corresponding path program 1 times [2021-12-21 13:49:20,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:20,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815728163] [2021-12-21 13:49:20,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:20,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:20,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:20,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815728163] [2021-12-21 13:49:20,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815728163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:20,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:20,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:20,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293461605] [2021-12-21 13:49:20,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:20,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:20,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:20,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:20,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:20,936 INFO L87 Difference]: Start difference. First operand 261 states and 319 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:21,405 INFO L93 Difference]: Finished difference Result 509 states and 648 transitions. [2021-12-21 13:49:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:49:21,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-21 13:49:21,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:21,407 INFO L225 Difference]: With dead ends: 509 [2021-12-21 13:49:21,408 INFO L226 Difference]: Without dead ends: 503 [2021-12-21 13:49:21,408 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 [2021-12-21 13:49:21,409 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1384 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:21,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 1061 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:49:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-21 13:49:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 261. [2021-12-21 13:49:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.272) internal successors, (318), 260 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:21,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 318 transitions. [2021-12-21 13:49:21,429 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 318 transitions. Word has length 66 [2021-12-21 13:49:21,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:21,429 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 318 transitions. [2021-12-21 13:49:21,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:21,429 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 318 transitions. [2021-12-21 13:49:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 13:49:21,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:21,430 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] [2021-12-21 13:49:21,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 13:49:21,430 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:21,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:21,431 INFO L85 PathProgramCache]: Analyzing trace with hash -155488627, now seen corresponding path program 1 times [2021-12-21 13:49:21,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:21,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245427077] [2021-12-21 13:49:21,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:21,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:21,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:21,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245427077] [2021-12-21 13:49:21,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245427077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:21,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:21,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:21,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989643268] [2021-12-21 13:49:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:21,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:21,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:21,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:21,519 INFO L87 Difference]: Start difference. First operand 261 states and 318 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:22,067 INFO L93 Difference]: Finished difference Result 613 states and 791 transitions. [2021-12-21 13:49:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:49:22,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-21 13:49:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:22,070 INFO L225 Difference]: With dead ends: 613 [2021-12-21 13:49:22,070 INFO L226 Difference]: Without dead ends: 515 [2021-12-21 13:49:22,071 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 [2021-12-21 13:49:22,071 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1445 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:22,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 1240 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:49:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-12-21 13:49:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 261. [2021-12-21 13:49:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.268) internal successors, (317), 260 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 317 transitions. [2021-12-21 13:49:22,093 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 317 transitions. Word has length 66 [2021-12-21 13:49:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:22,093 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 317 transitions. [2021-12-21 13:49:22,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 317 transitions. [2021-12-21 13:49:22,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 13:49:22,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:22,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:22,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:49:22,095 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:22,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:22,095 INFO L85 PathProgramCache]: Analyzing trace with hash -131812051, now seen corresponding path program 1 times [2021-12-21 13:49:22,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:22,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694372497] [2021-12-21 13:49:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:22,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:22,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:22,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694372497] [2021-12-21 13:49:22,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694372497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:22,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:22,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:22,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964369307] [2021-12-21 13:49:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:22,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:22,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:22,179 INFO L87 Difference]: Start difference. First operand 261 states and 317 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:22,718 INFO L93 Difference]: Finished difference Result 563 states and 726 transitions. [2021-12-21 13:49:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:49:22,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-21 13:49:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:22,720 INFO L225 Difference]: With dead ends: 563 [2021-12-21 13:49:22,720 INFO L226 Difference]: Without dead ends: 503 [2021-12-21 13:49:22,720 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 [2021-12-21 13:49:22,721 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1776 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:22,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1776 Valid, 1072 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:49:22,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-21 13:49:22,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 261. [2021-12-21 13:49:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.264) internal successors, (316), 260 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 316 transitions. [2021-12-21 13:49:22,764 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 316 transitions. Word has length 66 [2021-12-21 13:49:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:22,764 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 316 transitions. [2021-12-21 13:49:22,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:22,765 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 316 transitions. [2021-12-21 13:49:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 13:49:22,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:22,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:22,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:49:22,766 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:22,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2058619373, now seen corresponding path program 1 times [2021-12-21 13:49:22,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:22,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408820316] [2021-12-21 13:49:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:22,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:22,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:22,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408820316] [2021-12-21 13:49:22,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408820316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:22,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:22,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:22,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594612038] [2021-12-21 13:49:22,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:22,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:22,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:22,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:22,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:22,891 INFO L87 Difference]: Start difference. First operand 261 states and 316 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:23,479 INFO L93 Difference]: Finished difference Result 584 states and 755 transitions. [2021-12-21 13:49:23,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:49:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-21 13:49:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:23,481 INFO L225 Difference]: With dead ends: 584 [2021-12-21 13:49:23,481 INFO L226 Difference]: Without dead ends: 511 [2021-12-21 13:49:23,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:49:23,482 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 925 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:23,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 1297 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:49:23,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-12-21 13:49:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 261. [2021-12-21 13:49:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.26) internal successors, (315), 260 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 315 transitions. [2021-12-21 13:49:23,506 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 315 transitions. Word has length 66 [2021-12-21 13:49:23,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:23,506 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 315 transitions. [2021-12-21 13:49:23,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 315 transitions. [2021-12-21 13:49:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 13:49:23,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:23,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:23,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:49:23,508 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1833305997, now seen corresponding path program 1 times [2021-12-21 13:49:23,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:23,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980443485] [2021-12-21 13:49:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:23,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:23,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:23,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980443485] [2021-12-21 13:49:23,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980443485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:23,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:23,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:23,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587488848] [2021-12-21 13:49:23,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:23,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:23,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:23,585 INFO L87 Difference]: Start difference. First operand 261 states and 315 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:24,096 INFO L93 Difference]: Finished difference Result 509 states and 644 transitions. [2021-12-21 13:49:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 13:49:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-21 13:49:24,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:24,099 INFO L225 Difference]: With dead ends: 509 [2021-12-21 13:49:24,099 INFO L226 Difference]: Without dead ends: 503 [2021-12-21 13:49:24,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:49:24,099 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1398 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:24,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 1201 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:49:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-21 13:49:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 261. [2021-12-21 13:49:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 250 states have (on average 1.256) internal successors, (314), 260 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 314 transitions. [2021-12-21 13:49:24,125 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 314 transitions. Word has length 66 [2021-12-21 13:49:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:24,125 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 314 transitions. [2021-12-21 13:49:24,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 314 transitions. [2021-12-21 13:49:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-21 13:49:24,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:24,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:24,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:49:24,126 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:24,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash 817551922, now seen corresponding path program 1 times [2021-12-21 13:49:24,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:24,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557558028] [2021-12-21 13:49:24,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:24,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:24,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:24,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557558028] [2021-12-21 13:49:24,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557558028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:24,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:24,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-12-21 13:49:24,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925063470] [2021-12-21 13:49:24,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:24,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-21 13:49:24,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:24,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-21 13:49:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2021-12-21 13:49:24,800 INFO L87 Difference]: Start difference. First operand 261 states and 314 transitions. Second operand has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:27,988 INFO L93 Difference]: Finished difference Result 854 states and 1058 transitions. [2021-12-21 13:49:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 13:49:27,989 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-21 13:49:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:27,991 INFO L225 Difference]: With dead ends: 854 [2021-12-21 13:49:27,991 INFO L226 Difference]: Without dead ends: 799 [2021-12-21 13:49:27,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=343, Invalid=1913, Unknown=0, NotChecked=0, Total=2256 [2021-12-21 13:49:27,994 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 2087 mSDsluCounter, 7481 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 8062 SdHoareTripleChecker+Invalid, 3954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:27,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2087 Valid, 8062 Invalid, 3954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 13:49:27,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-12-21 13:49:28,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 276. [2021-12-21 13:49:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 265 states have (on average 1.260377358490566) internal successors, (334), 275 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 334 transitions. [2021-12-21 13:49:28,061 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 334 transitions. Word has length 67 [2021-12-21 13:49:28,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:28,061 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 334 transitions. [2021-12-21 13:49:28,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 334 transitions. [2021-12-21 13:49:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-21 13:49:28,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:28,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:28,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:49:28,062 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:28,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:28,063 INFO L85 PathProgramCache]: Analyzing trace with hash 167509874, now seen corresponding path program 1 times [2021-12-21 13:49:28,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:28,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760230913] [2021-12-21 13:49:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:28,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:28,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:28,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760230913] [2021-12-21 13:49:28,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760230913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:28,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:28,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 13:49:28,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187626280] [2021-12-21 13:49:28,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:28,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:49:28,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:49:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:49:28,281 INFO L87 Difference]: Start difference. First operand 276 states and 334 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:28,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:28,904 INFO L93 Difference]: Finished difference Result 738 states and 947 transitions. [2021-12-21 13:49:28,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 13:49:28,904 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-21 13:49:28,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:28,906 INFO L225 Difference]: With dead ends: 738 [2021-12-21 13:49:28,906 INFO L226 Difference]: Without dead ends: 614 [2021-12-21 13:49:28,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:49:28,907 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 2166 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:28,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2166 Valid, 1321 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:49:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-21 13:49:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 206. [2021-12-21 13:49:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 199 states have (on average 1.256281407035176) internal successors, (250), 205 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 250 transitions. [2021-12-21 13:49:28,942 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 250 transitions. Word has length 67 [2021-12-21 13:49:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:28,942 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 250 transitions. [2021-12-21 13:49:28,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 250 transitions. [2021-12-21 13:49:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 13:49:28,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:28,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:28,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:49:28,944 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:28,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:28,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1968382194, now seen corresponding path program 1 times [2021-12-21 13:49:28,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:28,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976329102] [2021-12-21 13:49:28,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:28,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:29,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:29,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976329102] [2021-12-21 13:49:29,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976329102] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:29,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:29,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:49:29,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204847551] [2021-12-21 13:49:29,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:29,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:49:29,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:29,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:49:29,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:49:29,205 INFO L87 Difference]: Start difference. First operand 206 states and 250 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:29,876 INFO L93 Difference]: Finished difference Result 600 states and 803 transitions. [2021-12-21 13:49:29,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:49:29,877 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-21 13:49:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:29,878 INFO L225 Difference]: With dead ends: 600 [2021-12-21 13:49:29,878 INFO L226 Difference]: Without dead ends: 529 [2021-12-21 13:49:29,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:49:29,879 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 1398 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:29,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 2310 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:49:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-12-21 13:49:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 189. [2021-12-21 13:49:29,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 184 states have (on average 1.25) internal successors, (230), 188 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 230 transitions. [2021-12-21 13:49:29,916 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 230 transitions. Word has length 68 [2021-12-21 13:49:29,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:29,916 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 230 transitions. [2021-12-21 13:49:29,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 230 transitions. [2021-12-21 13:49:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 13:49:29,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:29,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:29,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:49:29,917 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1424994738, now seen corresponding path program 1 times [2021-12-21 13:49:29,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:29,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965183892] [2021-12-21 13:49:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:29,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:30,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:30,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965183892] [2021-12-21 13:49:30,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965183892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:30,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:30,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-21 13:49:30,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273566848] [2021-12-21 13:49:30,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:30,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 13:49:30,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:30,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 13:49:30,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-12-21 13:49:30,281 INFO L87 Difference]: Start difference. First operand 189 states and 230 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:31,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:31,790 INFO L93 Difference]: Finished difference Result 586 states and 736 transitions. [2021-12-21 13:49:31,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 13:49:31,791 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-21 13:49:31,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:31,792 INFO L225 Difference]: With dead ends: 586 [2021-12-21 13:49:31,793 INFO L226 Difference]: Without dead ends: 573 [2021-12-21 13:49:31,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=237, Invalid=1169, Unknown=0, NotChecked=0, Total=1406 [2021-12-21 13:49:31,794 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 1804 mSDsluCounter, 3647 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:31,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1804 Valid, 3908 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:49:31,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-12-21 13:49:31,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 196. [2021-12-21 13:49:31,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.2460732984293195) internal successors, (238), 195 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 238 transitions. [2021-12-21 13:49:31,834 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 238 transitions. Word has length 68 [2021-12-21 13:49:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:31,835 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 238 transitions. [2021-12-21 13:49:31,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 238 transitions. [2021-12-21 13:49:31,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 13:49:31,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:31,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:31,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:49:31,836 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:31,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:31,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1956272974, now seen corresponding path program 1 times [2021-12-21 13:49:31,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:31,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402351777] [2021-12-21 13:49:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:31,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:32,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:32,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402351777] [2021-12-21 13:49:32,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402351777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:32,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:32,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-12-21 13:49:32,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473537589] [2021-12-21 13:49:32,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:32,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 13:49:32,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:32,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 13:49:32,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:49:32,297 INFO L87 Difference]: Start difference. First operand 196 states and 238 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:33,761 INFO L93 Difference]: Finished difference Result 571 states and 721 transitions. [2021-12-21 13:49:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-21 13:49:33,761 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-21 13:49:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:33,763 INFO L225 Difference]: With dead ends: 571 [2021-12-21 13:49:33,763 INFO L226 Difference]: Without dead ends: 564 [2021-12-21 13:49:33,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=280, Invalid=1442, Unknown=0, NotChecked=0, Total=1722 [2021-12-21 13:49:33,764 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 2216 mSDsluCounter, 3385 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:33,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 3642 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 13:49:33,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-12-21 13:49:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 196. [2021-12-21 13:49:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 191 states have (on average 1.2408376963350785) internal successors, (237), 195 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 237 transitions. [2021-12-21 13:49:33,806 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 237 transitions. Word has length 68 [2021-12-21 13:49:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:33,806 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 237 transitions. [2021-12-21 13:49:33,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 237 transitions. [2021-12-21 13:49:33,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 13:49:33,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:33,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:33,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:49:33,807 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:33,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash -30360855, now seen corresponding path program 1 times [2021-12-21 13:49:33,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:33,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117507555] [2021-12-21 13:49:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:33,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:34,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:34,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117507555] [2021-12-21 13:49:34,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117507555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:34,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:34,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-21 13:49:34,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70386038] [2021-12-21 13:49:34,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:34,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 13:49:34,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 13:49:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:49:34,189 INFO L87 Difference]: Start difference. First operand 196 states and 237 transitions. Second operand has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:35,009 INFO L93 Difference]: Finished difference Result 503 states and 652 transitions. [2021-12-21 13:49:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 13:49:35,010 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-21 13:49:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:35,011 INFO L225 Difference]: With dead ends: 503 [2021-12-21 13:49:35,011 INFO L226 Difference]: Without dead ends: 413 [2021-12-21 13:49:35,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-12-21 13:49:35,012 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1051 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:35,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3464 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:49:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-21 13:49:35,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 187. [2021-12-21 13:49:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 182 states have (on average 1.2252747252747254) internal successors, (223), 186 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 223 transitions. [2021-12-21 13:49:35,062 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 223 transitions. Word has length 68 [2021-12-21 13:49:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:35,062 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 223 transitions. [2021-12-21 13:49:35,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 223 transitions. [2021-12-21 13:49:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 13:49:35,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:35,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:35,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:49:35,063 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:35,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:35,064 INFO L85 PathProgramCache]: Analyzing trace with hash 308538022, now seen corresponding path program 1 times [2021-12-21 13:49:35,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:35,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463043767] [2021-12-21 13:49:35,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:35,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:35,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:35,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463043767] [2021-12-21 13:49:35,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463043767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:35,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:35,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:49:35,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732786600] [2021-12-21 13:49:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:35,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:49:35,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:49:35,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:49:35,244 INFO L87 Difference]: Start difference. First operand 187 states and 223 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:35,719 INFO L93 Difference]: Finished difference Result 288 states and 348 transitions. [2021-12-21 13:49:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:49:35,720 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-21 13:49:35,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:35,720 INFO L225 Difference]: With dead ends: 288 [2021-12-21 13:49:35,720 INFO L226 Difference]: Without dead ends: 284 [2021-12-21 13:49:35,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-12-21 13:49:35,722 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 1145 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:35,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 1082 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:49:35,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-12-21 13:49:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 182. [2021-12-21 13:49:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 178 states have (on average 1.2247191011235956) internal successors, (218), 181 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:35,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2021-12-21 13:49:35,768 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 69 [2021-12-21 13:49:35,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:35,768 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2021-12-21 13:49:35,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:35,769 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2021-12-21 13:49:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 13:49:35,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:35,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:35,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 13:49:35,769 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:35,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash 859380364, now seen corresponding path program 1 times [2021-12-21 13:49:35,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:35,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298520448] [2021-12-21 13:49:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:35,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:35,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:35,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298520448] [2021-12-21 13:49:35,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298520448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:35,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:35,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-21 13:49:35,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248084932] [2021-12-21 13:49:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:35,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 13:49:35,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 13:49:35,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:49:35,961 INFO L87 Difference]: Start difference. First operand 182 states and 218 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:36,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:36,527 INFO L93 Difference]: Finished difference Result 428 states and 551 transitions. [2021-12-21 13:49:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 13:49:36,530 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-21 13:49:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:36,531 INFO L225 Difference]: With dead ends: 428 [2021-12-21 13:49:36,532 INFO L226 Difference]: Without dead ends: 391 [2021-12-21 13:49:36,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:49:36,532 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 1005 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:36,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 1944 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:49:36,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-12-21 13:49:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 138. [2021-12-21 13:49:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 136 states have (on average 1.2426470588235294) internal successors, (169), 137 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 169 transitions. [2021-12-21 13:49:36,569 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 169 transitions. Word has length 69 [2021-12-21 13:49:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:36,569 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 169 transitions. [2021-12-21 13:49:36,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 169 transitions. [2021-12-21 13:49:36,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-21 13:49:36,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:36,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:36,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-21 13:49:36,570 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:36,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash -957086542, now seen corresponding path program 1 times [2021-12-21 13:49:36,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:36,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274719479] [2021-12-21 13:49:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:36,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:36,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:36,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274719479] [2021-12-21 13:49:36,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274719479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:36,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:36,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:49:36,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059767350] [2021-12-21 13:49:36,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:36,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:49:36,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:49:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:36,639 INFO L87 Difference]: Start difference. First operand 138 states and 169 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:36,932 INFO L93 Difference]: Finished difference Result 296 states and 383 transitions. [2021-12-21 13:49:36,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 13:49:36,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-21 13:49:36,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:36,933 INFO L225 Difference]: With dead ends: 296 [2021-12-21 13:49:36,933 INFO L226 Difference]: Without dead ends: 222 [2021-12-21 13:49:36,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-12-21 13:49:36,934 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 609 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:36,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 544 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:49:36,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-21 13:49:36,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 138. [2021-12-21 13:49:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 136 states have (on average 1.2352941176470589) internal successors, (168), 137 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 168 transitions. [2021-12-21 13:49:36,971 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 168 transitions. Word has length 70 [2021-12-21 13:49:36,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:36,971 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 168 transitions. [2021-12-21 13:49:36,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 168 transitions. [2021-12-21 13:49:36,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-21 13:49:36,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:36,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:36,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 13:49:36,972 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:36,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:36,973 INFO L85 PathProgramCache]: Analyzing trace with hash -918116841, now seen corresponding path program 1 times [2021-12-21 13:49:36,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:36,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906902416] [2021-12-21 13:49:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:36,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:37,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:37,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906902416] [2021-12-21 13:49:37,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906902416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:37,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:37,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-12-21 13:49:37,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25640789] [2021-12-21 13:49:37,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:37,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 13:49:37,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:37,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 13:49:37,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-12-21 13:49:37,414 INFO L87 Difference]: Start difference. First operand 138 states and 168 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:39,443 INFO L93 Difference]: Finished difference Result 709 states and 951 transitions. [2021-12-21 13:49:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-21 13:49:39,443 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-12-21 13:49:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:39,445 INFO L225 Difference]: With dead ends: 709 [2021-12-21 13:49:39,445 INFO L226 Difference]: Without dead ends: 703 [2021-12-21 13:49:39,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2021-12-21 13:49:39,446 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 1335 mSDsluCounter, 5449 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 5910 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:39,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 5910 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 13:49:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2021-12-21 13:49:39,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 157. [2021-12-21 13:49:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 155 states have (on average 1.232258064516129) internal successors, (191), 156 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 191 transitions. [2021-12-21 13:49:39,495 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 191 transitions. Word has length 72 [2021-12-21 13:49:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:39,495 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 191 transitions. [2021-12-21 13:49:39,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:39,495 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 191 transitions. [2021-12-21 13:49:39,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 13:49:39,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:39,496 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] [2021-12-21 13:49:39,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-21 13:49:39,496 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:39,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash 370177890, now seen corresponding path program 1 times [2021-12-21 13:49:39,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:39,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484086307] [2021-12-21 13:49:39,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:39,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:39,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:39,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484086307] [2021-12-21 13:49:39,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484086307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:39,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:39,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-21 13:49:39,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996893552] [2021-12-21 13:49:39,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:39,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 13:49:39,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:39,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 13:49:39,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-21 13:49:39,898 INFO L87 Difference]: Start difference. First operand 157 states and 191 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:41,806 INFO L93 Difference]: Finished difference Result 676 states and 918 transitions. [2021-12-21 13:49:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 13:49:41,807 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-21 13:49:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:41,809 INFO L225 Difference]: With dead ends: 676 [2021-12-21 13:49:41,809 INFO L226 Difference]: Without dead ends: 670 [2021-12-21 13:49:41,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2021-12-21 13:49:41,810 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1680 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:41,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1680 Valid, 3036 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:49:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-21 13:49:41,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 159. [2021-12-21 13:49:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.2292993630573248) internal successors, (193), 158 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 193 transitions. [2021-12-21 13:49:41,863 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 193 transitions. Word has length 73 [2021-12-21 13:49:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:41,863 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 193 transitions. [2021-12-21 13:49:41,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:41,864 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 193 transitions. [2021-12-21 13:49:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 13:49:41,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:41,864 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] [2021-12-21 13:49:41,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-21 13:49:41,864 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:41,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:41,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1832673344, now seen corresponding path program 1 times [2021-12-21 13:49:41,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:41,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158880270] [2021-12-21 13:49:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:41,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:42,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:42,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158880270] [2021-12-21 13:49:42,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158880270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:42,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:42,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-21 13:49:42,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428948394] [2021-12-21 13:49:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:42,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 13:49:42,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 13:49:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:49:42,085 INFO L87 Difference]: Start difference. First operand 159 states and 193 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:42,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:42,981 INFO L93 Difference]: Finished difference Result 589 states and 803 transitions. [2021-12-21 13:49:42,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 13:49:42,986 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-21 13:49:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:42,990 INFO L225 Difference]: With dead ends: 589 [2021-12-21 13:49:42,996 INFO L226 Difference]: Without dead ends: 583 [2021-12-21 13:49:42,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-21 13:49:42,997 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 1367 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:42,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 2323 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:49:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-12-21 13:49:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 132. [2021-12-21 13:49:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.2366412213740459) internal successors, (162), 131 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 162 transitions. [2021-12-21 13:49:43,048 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 162 transitions. Word has length 73 [2021-12-21 13:49:43,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:43,049 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 162 transitions. [2021-12-21 13:49:43,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:43,049 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 162 transitions. [2021-12-21 13:49:43,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 13:49:43,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:43,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:43,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-21 13:49:43,050 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:43,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1364481581, now seen corresponding path program 1 times [2021-12-21 13:49:43,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:43,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167611500] [2021-12-21 13:49:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:43,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:43,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:43,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167611500] [2021-12-21 13:49:43,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167611500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:43,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:43,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:49:43,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819141400] [2021-12-21 13:49:43,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:43,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:49:43,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:49:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:49:43,092 INFO L87 Difference]: Start difference. First operand 132 states and 162 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2021-12-21 13:49:43,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:43,437 INFO L93 Difference]: Finished difference Result 564 states and 794 transitions. [2021-12-21 13:49:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:49:43,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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 [2021-12-21 13:49:43,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:43,439 INFO L225 Difference]: With dead ends: 564 [2021-12-21 13:49:43,439 INFO L226 Difference]: Without dead ends: 510 [2021-12-21 13:49:43,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:49:43,440 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 896 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:43,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 944 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:49:43,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-12-21 13:49:43,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 184. [2021-12-21 13:49:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.3005464480874316) internal successors, (238), 183 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:43,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-12-21 13:49:43,520 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 96 [2021-12-21 13:49:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:43,521 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-12-21 13:49:43,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 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) [2021-12-21 13:49:43,521 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2021-12-21 13:49:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 13:49:43,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:43,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:43,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-21 13:49:43,522 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:43,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:43,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1426852022, now seen corresponding path program 1 times [2021-12-21 13:49:43,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:43,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315726639] [2021-12-21 13:49:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:43,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:43,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:43,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315726639] [2021-12-21 13:49:43,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315726639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:43,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:43,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:49:43,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662995136] [2021-12-21 13:49:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:43,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:49:43,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:49:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:49:43,575 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:43,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:43,993 INFO L93 Difference]: Finished difference Result 662 states and 935 transitions. [2021-12-21 13:49:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 13:49:43,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-21 13:49:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:43,996 INFO L225 Difference]: With dead ends: 662 [2021-12-21 13:49:43,996 INFO L226 Difference]: Without dead ends: 556 [2021-12-21 13:49:43,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:43,997 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 648 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:43,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 675 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:49:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-12-21 13:49:44,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 288. [2021-12-21 13:49:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.362369337979094) internal successors, (391), 287 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 391 transitions. [2021-12-21 13:49:44,202 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 391 transitions. Word has length 98 [2021-12-21 13:49:44,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:44,202 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 391 transitions. [2021-12-21 13:49:44,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:44,202 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 391 transitions. [2021-12-21 13:49:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 13:49:44,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:44,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:44,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-21 13:49:44,203 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:44,204 INFO L85 PathProgramCache]: Analyzing trace with hash 645902315, now seen corresponding path program 1 times [2021-12-21 13:49:44,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:44,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142289116] [2021-12-21 13:49:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:44,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:44,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:44,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142289116] [2021-12-21 13:49:44,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142289116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:44,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:44,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:49:44,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336857250] [2021-12-21 13:49:44,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:44,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:49:44,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:44,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:49:44,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:49:44,345 INFO L87 Difference]: Start difference. First operand 288 states and 391 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:44,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:44,554 INFO L93 Difference]: Finished difference Result 500 states and 700 transitions. [2021-12-21 13:49:44,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 13:49:44,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-21 13:49:44,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:44,555 INFO L225 Difference]: With dead ends: 500 [2021-12-21 13:49:44,555 INFO L226 Difference]: Without dead ends: 290 [2021-12-21 13:49:44,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:49:44,557 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 305 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:44,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 454 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:49:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-21 13:49:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2021-12-21 13:49:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.3554006968641115) internal successors, (389), 287 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 389 transitions. [2021-12-21 13:49:44,708 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 389 transitions. Word has length 98 [2021-12-21 13:49:44,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:44,708 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 389 transitions. [2021-12-21 13:49:44,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:44,708 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 389 transitions. [2021-12-21 13:49:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 13:49:44,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:44,709 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] [2021-12-21 13:49:44,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-21 13:49:44,709 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash 579408803, now seen corresponding path program 1 times [2021-12-21 13:49:44,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:44,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622156010] [2021-12-21 13:49:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:44,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:44,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:44,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622156010] [2021-12-21 13:49:44,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622156010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:44,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:44,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:49:44,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114641533] [2021-12-21 13:49:44,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:44,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:49:44,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:49:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:49:44,738 INFO L87 Difference]: Start difference. First operand 288 states and 389 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:45,016 INFO L93 Difference]: Finished difference Result 682 states and 957 transitions. [2021-12-21 13:49:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:49:45,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-21 13:49:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:45,018 INFO L225 Difference]: With dead ends: 682 [2021-12-21 13:49:45,018 INFO L226 Difference]: Without dead ends: 472 [2021-12-21 13:49:45,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:49:45,019 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 66 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:45,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 371 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:49:45,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-21 13:49:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 470. [2021-12-21 13:49:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.3688699360341152) internal successors, (642), 469 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 642 transitions. [2021-12-21 13:49:45,289 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 642 transitions. Word has length 98 [2021-12-21 13:49:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:45,290 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 642 transitions. [2021-12-21 13:49:45,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 642 transitions. [2021-12-21 13:49:45,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 13:49:45,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:45,291 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] [2021-12-21 13:49:45,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-21 13:49:45,291 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:45,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:45,291 INFO L85 PathProgramCache]: Analyzing trace with hash 628880202, now seen corresponding path program 1 times [2021-12-21 13:49:45,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:45,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422475373] [2021-12-21 13:49:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:45,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:45,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:45,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422475373] [2021-12-21 13:49:45,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422475373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:45,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:45,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:49:45,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466540176] [2021-12-21 13:49:45,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:45,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:49:45,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:45,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:49:45,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:49:45,335 INFO L87 Difference]: Start difference. First operand 470 states and 642 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:46,123 INFO L93 Difference]: Finished difference Result 1358 states and 1906 transitions. [2021-12-21 13:49:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 13:49:46,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-21 13:49:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:46,126 INFO L225 Difference]: With dead ends: 1358 [2021-12-21 13:49:46,126 INFO L226 Difference]: Without dead ends: 1161 [2021-12-21 13:49:46,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:46,127 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 614 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:46,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 691 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:49:46,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-12-21 13:49:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 763. [2021-12-21 13:49:46,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 762 states have (on average 1.389763779527559) internal successors, (1059), 762 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1059 transitions. [2021-12-21 13:49:46,617 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1059 transitions. Word has length 98 [2021-12-21 13:49:46,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:46,618 INFO L470 AbstractCegarLoop]: Abstraction has 763 states and 1059 transitions. [2021-12-21 13:49:46,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:46,618 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1059 transitions. [2021-12-21 13:49:46,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 13:49:46,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:46,619 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] [2021-12-21 13:49:46,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-21 13:49:46,619 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:46,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1790937782, now seen corresponding path program 1 times [2021-12-21 13:49:46,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:46,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387978410] [2021-12-21 13:49:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:46,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:46,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:46,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387978410] [2021-12-21 13:49:46,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387978410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:46,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:46,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:49:46,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801585394] [2021-12-21 13:49:46,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:46,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:49:46,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:46,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:49:46,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:49:46,669 INFO L87 Difference]: Start difference. First operand 763 states and 1059 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:47,550 INFO L93 Difference]: Finished difference Result 1553 states and 2184 transitions. [2021-12-21 13:49:47,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 13:49:47,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-21 13:49:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:47,553 INFO L225 Difference]: With dead ends: 1553 [2021-12-21 13:49:47,553 INFO L226 Difference]: Without dead ends: 1356 [2021-12-21 13:49:47,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:47,554 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 586 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:47,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 733 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:49:47,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-12-21 13:49:48,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 958. [2021-12-21 13:49:48,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.3970741901776385) internal successors, (1337), 957 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1337 transitions. [2021-12-21 13:49:48,185 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1337 transitions. Word has length 98 [2021-12-21 13:49:48,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:48,186 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1337 transitions. [2021-12-21 13:49:48,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1337 transitions. [2021-12-21 13:49:48,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 13:49:48,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:48,187 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] [2021-12-21 13:49:48,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-21 13:49:48,187 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:48,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:48,187 INFO L85 PathProgramCache]: Analyzing trace with hash -686393014, now seen corresponding path program 1 times [2021-12-21 13:49:48,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:48,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616490699] [2021-12-21 13:49:48,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:48,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:48,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:48,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616490699] [2021-12-21 13:49:48,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616490699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:48,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:48,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:49:48,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440195700] [2021-12-21 13:49:48,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:48,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:49:48,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:49:48,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:49:48,233 INFO L87 Difference]: Start difference. First operand 958 states and 1337 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:49,287 INFO L93 Difference]: Finished difference Result 1748 states and 2462 transitions. [2021-12-21 13:49:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 13:49:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-21 13:49:49,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:49,291 INFO L225 Difference]: With dead ends: 1748 [2021-12-21 13:49:49,291 INFO L226 Difference]: Without dead ends: 1551 [2021-12-21 13:49:49,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:49:49,292 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 644 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:49,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 754 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:49:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2021-12-21 13:49:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1153. [2021-12-21 13:49:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.4019097222222223) internal successors, (1615), 1152 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1615 transitions. [2021-12-21 13:49:50,069 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1615 transitions. Word has length 98 [2021-12-21 13:49:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:50,070 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1615 transitions. [2021-12-21 13:49:50,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1615 transitions. [2021-12-21 13:49:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 13:49:50,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:50,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:50,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-21 13:49:50,072 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:50,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:50,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1897778033, now seen corresponding path program 1 times [2021-12-21 13:49:50,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:50,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525550326] [2021-12-21 13:49:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:50,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:50,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525550326] [2021-12-21 13:49:50,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525550326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:50,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:50,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:49:50,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483685083] [2021-12-21 13:49:50,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:50,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:49:50,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:50,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:49:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:49:50,116 INFO L87 Difference]: Start difference. First operand 1153 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:51,317 INFO L93 Difference]: Finished difference Result 2885 states and 4062 transitions. [2021-12-21 13:49:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:49:51,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-12-21 13:49:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:51,321 INFO L225 Difference]: With dead ends: 2885 [2021-12-21 13:49:51,322 INFO L226 Difference]: Without dead ends: 1810 [2021-12-21 13:49:51,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:49:51,323 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 77 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:51,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 343 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:49:51,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2021-12-21 13:49:52,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1720. [2021-12-21 13:49:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1719 states have (on average 1.3944153577661431) internal successors, (2397), 1719 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2397 transitions. [2021-12-21 13:49:52,502 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2397 transitions. Word has length 99 [2021-12-21 13:49:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:52,502 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 2397 transitions. [2021-12-21 13:49:52,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2397 transitions. [2021-12-21 13:49:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-21 13:49:52,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:52,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:52,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-21 13:49:52,504 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:52,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:52,504 INFO L85 PathProgramCache]: Analyzing trace with hash 642959826, now seen corresponding path program 1 times [2021-12-21 13:49:52,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:52,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694406054] [2021-12-21 13:49:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:52,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:52,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:52,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694406054] [2021-12-21 13:49:52,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694406054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:52,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:52,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:49:52,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977231546] [2021-12-21 13:49:52,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:52,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:49:52,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:49:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:49:52,533 INFO L87 Difference]: Start difference. First operand 1720 states and 2397 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:54,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:49:54,772 INFO L93 Difference]: Finished difference Result 4872 states and 6794 transitions. [2021-12-21 13:49:54,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:49:54,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-12-21 13:49:54,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:49:54,782 INFO L225 Difference]: With dead ends: 4872 [2021-12-21 13:49:54,782 INFO L226 Difference]: Without dead ends: 3230 [2021-12-21 13:49:54,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:49:54,809 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 70 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:49:54,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 344 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:49:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2021-12-21 13:49:56,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3096. [2021-12-21 13:49:56,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.3831987075928918) internal successors, (4281), 3095 states have internal predecessors, (4281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:56,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4281 transitions. [2021-12-21 13:49:56,902 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4281 transitions. Word has length 100 [2021-12-21 13:49:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:49:56,902 INFO L470 AbstractCegarLoop]: Abstraction has 3096 states and 4281 transitions. [2021-12-21 13:49:56,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:49:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4281 transitions. [2021-12-21 13:49:56,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 13:49:56,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:49:56,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:49:56,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-21 13:49:56,903 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:49:56,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:49:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash -563977445, now seen corresponding path program 1 times [2021-12-21 13:49:56,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:49:56,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014327475] [2021-12-21 13:49:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:49:56,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:49:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:49:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:49:56,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:49:56,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014327475] [2021-12-21 13:49:56,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014327475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:49:56,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:49:56,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:49:56,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430033634] [2021-12-21 13:49:56,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:49:56,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:49:56,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:49:56,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:49:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:49:56,939 INFO L87 Difference]: Start difference. First operand 3096 states and 4281 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:50:00,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:50:00,982 INFO L93 Difference]: Finished difference Result 8868 states and 12215 transitions. [2021-12-21 13:50:00,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:50:00,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2021-12-21 13:50:00,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:50:00,996 INFO L225 Difference]: With dead ends: 8868 [2021-12-21 13:50:00,996 INFO L226 Difference]: Without dead ends: 5850 [2021-12-21 13:50:00,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:50:00,999 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 63 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:50:01,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 344 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:50:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2021-12-21 13:50:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5584. [2021-12-21 13:50:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 5583 states have (on average 1.3648576034390112) internal successors, (7620), 5583 states have internal predecessors, (7620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:50:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 7620 transitions. [2021-12-21 13:50:04,978 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 7620 transitions. Word has length 101 [2021-12-21 13:50:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:50:04,978 INFO L470 AbstractCegarLoop]: Abstraction has 5584 states and 7620 transitions. [2021-12-21 13:50:04,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:50:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 7620 transitions. [2021-12-21 13:50:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-21 13:50:04,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:50:04,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:50:04,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-21 13:50:04,979 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:50:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:50:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash 573353758, now seen corresponding path program 1 times [2021-12-21 13:50:04,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:50:04,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370455912] [2021-12-21 13:50:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:50:04,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:50:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:50:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:50:05,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:50:05,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370455912] [2021-12-21 13:50:05,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370455912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:50:05,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:50:05,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:50:05,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543173151] [2021-12-21 13:50:05,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:50:05,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:50:05,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:50:05,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:50:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:50:05,014 INFO L87 Difference]: Start difference. First operand 5584 states and 7620 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:50:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:50:12,392 INFO L93 Difference]: Finished difference Result 16068 states and 21770 transitions. [2021-12-21 13:50:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:50:12,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-12-21 13:50:12,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:50:12,409 INFO L225 Difference]: With dead ends: 16068 [2021-12-21 13:50:12,410 INFO L226 Difference]: Without dead ends: 10562 [2021-12-21 13:50:12,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:50:12,416 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 53 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:50:12,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 343 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:50:12,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10562 states. [2021-12-21 13:50:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10562 to 10032. [2021-12-21 13:50:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10032 states, 10031 states have (on average 1.3398464759246336) internal successors, (13440), 10031 states have internal predecessors, (13440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:50:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10032 states to 10032 states and 13440 transitions. [2021-12-21 13:50:19,818 INFO L78 Accepts]: Start accepts. Automaton has 10032 states and 13440 transitions. Word has length 102 [2021-12-21 13:50:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:50:19,819 INFO L470 AbstractCegarLoop]: Abstraction has 10032 states and 13440 transitions. [2021-12-21 13:50:19,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:50:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 10032 states and 13440 transitions. [2021-12-21 13:50:19,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 13:50:19,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:50:19,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:50:19,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-21 13:50:19,820 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-12-21 13:50:19,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:50:19,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1488377255, now seen corresponding path program 1 times [2021-12-21 13:50:19,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:50:19,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347303201] [2021-12-21 13:50:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:50:19,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:50:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:50:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:50:19,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:50:19,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347303201] [2021-12-21 13:50:19,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347303201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:50:19,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:50:19,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:50:19,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056228408] [2021-12-21 13:50:19,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:50:19,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:50:19,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:50:19,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:50:19,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:50:19,867 INFO L87 Difference]: Start difference. First operand 10032 states and 13440 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)