./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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.3.1.ufo.BOUNDED-6.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 46dda72cbacea7804179bc67e21a7607713ae67e303b365119c911cce7c0e646 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:17:10,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:17:10,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:17:10,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:17:10,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:17:10,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:17:10,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:17:10,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:17:10,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:17:10,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:17:10,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:17:10,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:17:10,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:17:10,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:17:10,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:17:10,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:17:10,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:17:10,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:17:10,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:17:10,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:17:10,975 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:17:10,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:17:10,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:17:10,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:17:10,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:17:10,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:17:10,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:17:10,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:17:10,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:17:10,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:17:10,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:17:10,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:17:10,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:17:10,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:17:10,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:17:10,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:17:10,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:17:10,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:17:10,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:17:11,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:17:11,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:17:11,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:17:11,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:17:11,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:17:11,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:17:11,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:17:11,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:17:11,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:17:11,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:17:11,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:17:11,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:17:11,069 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:17:11,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:17:11,071 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:17:11,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:17:11,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:17:11,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:17:11,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:17:11,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:17:11,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:17:11,075 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:17:11,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:17:11,076 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:17:11,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:17:11,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:17:11,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:17:11,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:17:11,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:17:11,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:17:11,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:17:11,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:17:11,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:17:11,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:17:11,079 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:17:11,080 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:17:11,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:17:11,080 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46dda72cbacea7804179bc67e21a7607713ae67e303b365119c911cce7c0e646 [2022-07-19 18:17:11,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:17:11,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:17:11,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:17:11,579 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:17:11,580 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:17:11,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-07-19 18:17:11,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89750db23/4dfeb12c25b5472ea6562c2987bcfac4/FLAG97b1b04d4 [2022-07-19 18:17:12,349 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:17:12,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-07-19 18:17:12,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89750db23/4dfeb12c25b5472ea6562c2987bcfac4/FLAG97b1b04d4 [2022-07-19 18:17:12,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89750db23/4dfeb12c25b5472ea6562c2987bcfac4 [2022-07-19 18:17:12,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:17:12,676 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:17:12,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:17:12,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:17:12,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:17:12,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:17:12" (1/1) ... [2022-07-19 18:17:12,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fccc86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:12, skipping insertion in model container [2022-07-19 18:17:12,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:17:12" (1/1) ... [2022-07-19 18:17:12,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:17:12,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:17:13,181 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[6199,6212] [2022-07-19 18:17:13,224 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[9205,9218] [2022-07-19 18:17:13,266 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12265,12278] [2022-07-19 18:17:13,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[15172,15185] [2022-07-19 18:17:13,330 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[18387,18400] [2022-07-19 18:17:13,361 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[21499,21512] [2022-07-19 18:17:13,384 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[24550,24563] [2022-07-19 18:17:13,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:17:13,428 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:17:13,496 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[6199,6212] [2022-07-19 18:17:13,520 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[9205,9218] [2022-07-19 18:17:13,535 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12265,12278] [2022-07-19 18:17:13,542 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[15172,15185] [2022-07-19 18:17:13,560 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[18387,18400] [2022-07-19 18:17:13,590 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[21499,21512] [2022-07-19 18:17:13,598 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.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[24550,24563] [2022-07-19 18:17:13,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:17:13,680 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:17:13,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13 WrapperNode [2022-07-19 18:17:13,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:17:13,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:17:13,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:17:13,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:17:13,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:13,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:13,868 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1332 [2022-07-19 18:17:13,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:17:13,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:17:13,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:17:13,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:17:13,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:13,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:13,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:13,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:13,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:13,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:14,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:14,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:17:14,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:17:14,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:17:14,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:17:14,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (1/1) ... [2022-07-19 18:17:14,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:17:14,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:17:14,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 18:17:14,124 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 [2022-07-19 18:17:14,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:17:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:17:14,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:17:14,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:17:14,300 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:17:14,302 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:17:15,393 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:17:15,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:17:15,428 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:17:15,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:17:15 BoogieIcfgContainer [2022-07-19 18:17:15,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:17:15,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:17:15,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:17:15,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:17:15,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:17:12" (1/3) ... [2022-07-19 18:17:15,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8a8afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:17:15, skipping insertion in model container [2022-07-19 18:17:15,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:17:13" (2/3) ... [2022-07-19 18:17:15,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8a8afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:17:15, skipping insertion in model container [2022-07-19 18:17:15,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:17:15" (3/3) ... [2022-07-19 18:17:15,446 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-07-19 18:17:15,458 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:17:15,458 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-07-19 18:17:15,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:17:15,673 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@644bcc19, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@537db6c5 [2022-07-19 18:17:15,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-19 18:17:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 271 states have (on average 1.7933579335793357) internal successors, (486), 278 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:15,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-19 18:17:15,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:15,703 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:15,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:15,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:15,713 INFO L85 PathProgramCache]: Analyzing trace with hash -506083603, now seen corresponding path program 1 times [2022-07-19 18:17:15,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:15,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409172668] [2022-07-19 18:17:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:15,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:16,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:16,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409172668] [2022-07-19 18:17:16,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409172668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:16,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:16,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:17:16,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309033870] [2022-07-19 18:17:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:16,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:17:16,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:16,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:17:16,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:17:16,324 INFO L87 Difference]: Start difference. First operand has 279 states, 271 states have (on average 1.7933579335793357) internal successors, (486), 278 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:16,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:16,661 INFO L93 Difference]: Finished difference Result 392 states and 660 transitions. [2022-07-19 18:17:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:17:16,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-07-19 18:17:16,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:16,683 INFO L225 Difference]: With dead ends: 392 [2022-07-19 18:17:16,683 INFO L226 Difference]: Without dead ends: 244 [2022-07-19 18:17:16,686 INFO L412 NwaCegarLoop]: 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 [2022-07-19 18:17:16,689 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1142 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:16,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 300 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:17:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-07-19 18:17:16,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-07-19 18:17:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 237 states have (on average 1.2658227848101267) internal successors, (300), 243 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 300 transitions. [2022-07-19 18:17:16,773 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 300 transitions. Word has length 48 [2022-07-19 18:17:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:16,775 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 300 transitions. [2022-07-19 18:17:16,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 300 transitions. [2022-07-19 18:17:16,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-19 18:17:16,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:16,783 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:16,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:17:16,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:16,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1206513712, now seen corresponding path program 1 times [2022-07-19 18:17:16,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:16,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041538410] [2022-07-19 18:17:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:17,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041538410] [2022-07-19 18:17:17,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041538410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:17,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:17,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:17:17,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034015988] [2022-07-19 18:17:17,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:17,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:17:17,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:17,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:17:17,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:17:17,075 INFO L87 Difference]: Start difference. First operand 244 states and 300 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:17,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:17,248 INFO L93 Difference]: Finished difference Result 312 states and 387 transitions. [2022-07-19 18:17:17,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:17:17,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-07-19 18:17:17,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:17,250 INFO L225 Difference]: With dead ends: 312 [2022-07-19 18:17:17,251 INFO L226 Difference]: Without dead ends: 186 [2022-07-19 18:17:17,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:17:17,253 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 632 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:17,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 144 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:17:17,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-19 18:17:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-07-19 18:17:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 179 states have (on average 1.2681564245810055) internal successors, (227), 185 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 227 transitions. [2022-07-19 18:17:17,268 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 227 transitions. Word has length 48 [2022-07-19 18:17:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:17,269 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 227 transitions. [2022-07-19 18:17:17,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 227 transitions. [2022-07-19 18:17:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-19 18:17:17,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:17,270 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:17,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:17:17,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:17,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash 731649800, now seen corresponding path program 1 times [2022-07-19 18:17:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:17,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094738146] [2022-07-19 18:17:17,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:17,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:17,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:17,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094738146] [2022-07-19 18:17:17,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094738146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:17,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:17,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:17:17,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88418067] [2022-07-19 18:17:17,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:17,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:17:17,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:17,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:17:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:17:17,375 INFO L87 Difference]: Start difference. First operand 186 states and 227 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:17,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:17,667 INFO L93 Difference]: Finished difference Result 354 states and 447 transitions. [2022-07-19 18:17:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:17:17,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-07-19 18:17:17,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:17,671 INFO L225 Difference]: With dead ends: 354 [2022-07-19 18:17:17,671 INFO L226 Difference]: Without dead ends: 251 [2022-07-19 18:17:17,672 INFO L412 NwaCegarLoop]: 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 [2022-07-19 18:17:17,674 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 786 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:17,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 199 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:17:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-19 18:17:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 226. [2022-07-19 18:17:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.3242009132420092) internal successors, (290), 225 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:17,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 290 transitions. [2022-07-19 18:17:17,727 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 290 transitions. Word has length 48 [2022-07-19 18:17:17,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:17,727 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 290 transitions. [2022-07-19 18:17:17,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:17,728 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 290 transitions. [2022-07-19 18:17:17,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 18:17:17,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:17,730 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:17,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:17:17,730 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:17,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash 613838546, now seen corresponding path program 1 times [2022-07-19 18:17:17,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:17,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333150878] [2022-07-19 18:17:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:17,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:17,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:17,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333150878] [2022-07-19 18:17:17,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333150878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:17,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:17,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:17:17,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541346041] [2022-07-19 18:17:17,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:17,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 18:17:17,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:17,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 18:17:17,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 18:17:17,912 INFO L87 Difference]: Start difference. First operand 226 states and 290 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:18,604 INFO L93 Difference]: Finished difference Result 479 states and 630 transitions. [2022-07-19 18:17:18,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 18:17:18,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-07-19 18:17:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:18,608 INFO L225 Difference]: With dead ends: 479 [2022-07-19 18:17:18,615 INFO L226 Difference]: Without dead ends: 351 [2022-07-19 18:17:18,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-19 18:17:18,623 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 713 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:18,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 311 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 18:17:18,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-07-19 18:17:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 226. [2022-07-19 18:17:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.3196347031963471) internal successors, (289), 225 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 289 transitions. [2022-07-19 18:17:18,681 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 289 transitions. Word has length 50 [2022-07-19 18:17:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:18,682 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 289 transitions. [2022-07-19 18:17:18,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 289 transitions. [2022-07-19 18:17:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 18:17:18,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:18,683 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:18,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:17:18,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1717096174, now seen corresponding path program 1 times [2022-07-19 18:17:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:18,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922531621] [2022-07-19 18:17:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:18,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:18,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:18,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922531621] [2022-07-19 18:17:18,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922531621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:18,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:18,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:17:18,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929473136] [2022-07-19 18:17:18,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:18,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:17:18,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:17:18,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:17:18,918 INFO L87 Difference]: Start difference. First operand 226 states and 289 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:19,548 INFO L93 Difference]: Finished difference Result 548 states and 743 transitions. [2022-07-19 18:17:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 18:17:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-07-19 18:17:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:19,552 INFO L225 Difference]: With dead ends: 548 [2022-07-19 18:17:19,554 INFO L226 Difference]: Without dead ends: 542 [2022-07-19 18:17:19,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:17:19,555 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1244 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:19,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 632 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 18:17:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-19 18:17:19,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 226. [2022-07-19 18:17:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.3150684931506849) internal successors, (288), 225 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 288 transitions. [2022-07-19 18:17:19,586 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 288 transitions. Word has length 50 [2022-07-19 18:17:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:19,592 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 288 transitions. [2022-07-19 18:17:19,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 288 transitions. [2022-07-19 18:17:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 18:17:19,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:19,594 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:19,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:17:19,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1648014290, now seen corresponding path program 1 times [2022-07-19 18:17:19,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:19,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977201704] [2022-07-19 18:17:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:19,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:19,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:19,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977201704] [2022-07-19 18:17:19,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977201704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:19,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:19,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:17:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295175044] [2022-07-19 18:17:19,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:19,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:17:19,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:19,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:17:19,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:17:19,798 INFO L87 Difference]: Start difference. First operand 226 states and 288 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:20,294 INFO L93 Difference]: Finished difference Result 463 states and 631 transitions. [2022-07-19 18:17:20,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 18:17:20,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-07-19 18:17:20,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:20,299 INFO L225 Difference]: With dead ends: 463 [2022-07-19 18:17:20,299 INFO L226 Difference]: Without dead ends: 360 [2022-07-19 18:17:20,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-07-19 18:17:20,301 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 890 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:20,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 649 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:17:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-19 18:17:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 226. [2022-07-19 18:17:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.3105022831050228) internal successors, (287), 225 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 287 transitions. [2022-07-19 18:17:20,349 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 287 transitions. Word has length 50 [2022-07-19 18:17:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:20,349 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 287 transitions. [2022-07-19 18:17:20,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 287 transitions. [2022-07-19 18:17:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-19 18:17:20,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:20,351 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:20,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:17:20,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1708755507, now seen corresponding path program 1 times [2022-07-19 18:17:20,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:20,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660782747] [2022-07-19 18:17:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:20,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:20,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:20,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660782747] [2022-07-19 18:17:20,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660782747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:20,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:20,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 18:17:20,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27980441] [2022-07-19 18:17:20,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 18:17:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:20,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 18:17:20,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 18:17:20,704 INFO L87 Difference]: Start difference. First operand 226 states and 287 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:21,616 INFO L93 Difference]: Finished difference Result 584 states and 813 transitions. [2022-07-19 18:17:21,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 18:17:21,617 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-07-19 18:17:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:21,619 INFO L225 Difference]: With dead ends: 584 [2022-07-19 18:17:21,619 INFO L226 Difference]: Without dead ends: 488 [2022-07-19 18:17:21,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-19 18:17:21,622 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1104 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:21,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1601 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:17:21,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-07-19 18:17:21,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 214. [2022-07-19 18:17:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.3125) internal successors, (273), 213 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 273 transitions. [2022-07-19 18:17:21,677 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 273 transitions. Word has length 51 [2022-07-19 18:17:21,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:21,677 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 273 transitions. [2022-07-19 18:17:21,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:21,677 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 273 transitions. [2022-07-19 18:17:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 18:17:21,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:21,678 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:21,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:17:21,678 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash 871420535, now seen corresponding path program 1 times [2022-07-19 18:17:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:21,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987866239] [2022-07-19 18:17:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:21,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:21,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987866239] [2022-07-19 18:17:21,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987866239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:21,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:21,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 18:17:21,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082164527] [2022-07-19 18:17:21,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:21,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 18:17:21,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:21,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 18:17:21,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 18:17:21,946 INFO L87 Difference]: Start difference. First operand 214 states and 273 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:22,882 INFO L93 Difference]: Finished difference Result 461 states and 629 transitions. [2022-07-19 18:17:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 18:17:22,883 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-19 18:17:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:22,886 INFO L225 Difference]: With dead ends: 461 [2022-07-19 18:17:22,887 INFO L226 Difference]: Without dead ends: 444 [2022-07-19 18:17:22,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-07-19 18:17:22,888 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 987 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:22,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1569 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 18:17:22,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-19 18:17:22,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 197. [2022-07-19 18:17:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 193 states have (on average 1.310880829015544) internal successors, (253), 196 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 253 transitions. [2022-07-19 18:17:22,919 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 253 transitions. Word has length 52 [2022-07-19 18:17:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:22,920 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 253 transitions. [2022-07-19 18:17:22,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:22,921 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 253 transitions. [2022-07-19 18:17:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 18:17:22,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:22,921 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:22,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:17:22,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:22,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1375412663, now seen corresponding path program 1 times [2022-07-19 18:17:22,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:22,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436398555] [2022-07-19 18:17:22,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:22,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:23,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:23,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436398555] [2022-07-19 18:17:23,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436398555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:23,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:23,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 18:17:23,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028291527] [2022-07-19 18:17:23,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:23,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 18:17:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 18:17:23,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 18:17:23,314 INFO L87 Difference]: Start difference. First operand 197 states and 253 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:23,964 INFO L93 Difference]: Finished difference Result 435 states and 580 transitions. [2022-07-19 18:17:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 18:17:23,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-19 18:17:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:23,967 INFO L225 Difference]: With dead ends: 435 [2022-07-19 18:17:23,967 INFO L226 Difference]: Without dead ends: 347 [2022-07-19 18:17:23,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-19 18:17:23,970 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 935 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:23,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 842 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:17:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-19 18:17:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 193. [2022-07-19 18:17:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.305263157894737) internal successors, (248), 192 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 248 transitions. [2022-07-19 18:17:24,006 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 248 transitions. Word has length 52 [2022-07-19 18:17:24,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:24,007 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 248 transitions. [2022-07-19 18:17:24,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:24,007 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 248 transitions. [2022-07-19 18:17:24,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 18:17:24,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:24,008 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:24,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:17:24,008 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:24,009 INFO L85 PathProgramCache]: Analyzing trace with hash 4832631, now seen corresponding path program 1 times [2022-07-19 18:17:24,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:24,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175298973] [2022-07-19 18:17:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:24,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:24,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175298973] [2022-07-19 18:17:24,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175298973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:24,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:24,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:17:24,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167575163] [2022-07-19 18:17:24,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:24,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:17:24,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:24,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:17:24,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:17:24,142 INFO L87 Difference]: Start difference. First operand 193 states and 248 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:24,502 INFO L93 Difference]: Finished difference Result 314 states and 416 transitions. [2022-07-19 18:17:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:17:24,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-19 18:17:24,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:24,506 INFO L225 Difference]: With dead ends: 314 [2022-07-19 18:17:24,506 INFO L226 Difference]: Without dead ends: 196 [2022-07-19 18:17:24,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-07-19 18:17:24,508 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 431 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:24,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 336 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:17:24,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-19 18:17:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2022-07-19 18:17:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.2947368421052632) internal successors, (246), 192 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 246 transitions. [2022-07-19 18:17:24,563 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 246 transitions. Word has length 54 [2022-07-19 18:17:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:24,563 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 246 transitions. [2022-07-19 18:17:24,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 246 transitions. [2022-07-19 18:17:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 18:17:24,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:24,564 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:24,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 18:17:24,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash -924533993, now seen corresponding path program 1 times [2022-07-19 18:17:24,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:24,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596609368] [2022-07-19 18:17:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:24,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:24,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:24,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596609368] [2022-07-19 18:17:24,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596609368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:24,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:24,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:17:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352420363] [2022-07-19 18:17:24,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:24,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:17:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:24,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:17:24,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:17:24,768 INFO L87 Difference]: Start difference. First operand 193 states and 246 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:25,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:25,705 INFO L93 Difference]: Finished difference Result 341 states and 441 transitions. [2022-07-19 18:17:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 18:17:25,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-19 18:17:25,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:25,707 INFO L225 Difference]: With dead ends: 341 [2022-07-19 18:17:25,707 INFO L226 Difference]: Without dead ends: 333 [2022-07-19 18:17:25,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-19 18:17:25,709 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 621 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:25,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 641 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 18:17:25,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-19 18:17:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 193. [2022-07-19 18:17:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.2894736842105263) internal successors, (245), 192 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 245 transitions. [2022-07-19 18:17:25,747 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 245 transitions. Word has length 54 [2022-07-19 18:17:25,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:25,747 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 245 transitions. [2022-07-19 18:17:25,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 245 transitions. [2022-07-19 18:17:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-19 18:17:25,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:25,748 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:25,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 18:17:25,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:25,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1614885916, now seen corresponding path program 1 times [2022-07-19 18:17:25,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:25,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751573688] [2022-07-19 18:17:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:25,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:26,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:26,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751573688] [2022-07-19 18:17:26,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751573688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:26,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:26,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 18:17:26,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300899335] [2022-07-19 18:17:26,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:26,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 18:17:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:26,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 18:17:26,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 18:17:26,006 INFO L87 Difference]: Start difference. First operand 193 states and 245 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:26,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:26,976 INFO L93 Difference]: Finished difference Result 523 states and 707 transitions. [2022-07-19 18:17:26,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 18:17:26,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-07-19 18:17:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:26,981 INFO L225 Difference]: With dead ends: 523 [2022-07-19 18:17:26,982 INFO L226 Difference]: Without dead ends: 517 [2022-07-19 18:17:26,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-19 18:17:26,985 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 836 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:26,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1643 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 18:17:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-07-19 18:17:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 187. [2022-07-19 18:17:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.2864864864864864) internal successors, (238), 186 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) [2022-07-19 18:17:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 238 transitions. [2022-07-19 18:17:27,033 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 238 transitions. Word has length 56 [2022-07-19 18:17:27,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:27,033 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 238 transitions. [2022-07-19 18:17:27,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:27,033 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 238 transitions. [2022-07-19 18:17:27,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-19 18:17:27,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:27,038 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:27,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 18:17:27,038 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash -712982628, now seen corresponding path program 1 times [2022-07-19 18:17:27,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:27,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345025903] [2022-07-19 18:17:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:27,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:27,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:27,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345025903] [2022-07-19 18:17:27,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345025903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:27,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:27,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 18:17:27,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489336759] [2022-07-19 18:17:27,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:27,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 18:17:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:27,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 18:17:27,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-19 18:17:27,579 INFO L87 Difference]: Start difference. First operand 187 states and 238 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:28,570 INFO L93 Difference]: Finished difference Result 221 states and 270 transitions. [2022-07-19 18:17:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 18:17:28,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-07-19 18:17:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:28,571 INFO L225 Difference]: With dead ends: 221 [2022-07-19 18:17:28,571 INFO L226 Difference]: Without dead ends: 212 [2022-07-19 18:17:28,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2022-07-19 18:17:28,572 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 280 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:28,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1459 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:17:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-19 18:17:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2022-07-19 18:17:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 191 states have (on average 1.2774869109947644) internal successors, (244), 192 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 244 transitions. [2022-07-19 18:17:28,630 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 244 transitions. Word has length 56 [2022-07-19 18:17:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:28,631 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 244 transitions. [2022-07-19 18:17:28,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 244 transitions. [2022-07-19 18:17:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-19 18:17:28,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:28,632 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:28,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 18:17:28,633 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:28,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1082760790, now seen corresponding path program 1 times [2022-07-19 18:17:28,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:28,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676968700] [2022-07-19 18:17:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:28,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:29,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:29,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676968700] [2022-07-19 18:17:29,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676968700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:29,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:29,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 18:17:29,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525984051] [2022-07-19 18:17:29,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:29,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 18:17:29,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:29,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 18:17:29,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-19 18:17:29,218 INFO L87 Difference]: Start difference. First operand 193 states and 244 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:30,193 INFO L93 Difference]: Finished difference Result 212 states and 261 transitions. [2022-07-19 18:17:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 18:17:30,194 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-19 18:17:30,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:30,196 INFO L225 Difference]: With dead ends: 212 [2022-07-19 18:17:30,196 INFO L226 Difference]: Without dead ends: 196 [2022-07-19 18:17:30,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2022-07-19 18:17:30,212 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 476 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:30,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 944 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:17:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-19 18:17:30,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 187. [2022-07-19 18:17:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.281081081081081) internal successors, (237), 186 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) [2022-07-19 18:17:30,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 237 transitions. [2022-07-19 18:17:30,280 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 237 transitions. Word has length 57 [2022-07-19 18:17:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:30,290 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 237 transitions. [2022-07-19 18:17:30,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 237 transitions. [2022-07-19 18:17:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-19 18:17:30,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:30,291 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:30,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 18:17:30,292 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1556324125, now seen corresponding path program 1 times [2022-07-19 18:17:30,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:30,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449947860] [2022-07-19 18:17:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:30,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:30,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449947860] [2022-07-19 18:17:30,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449947860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:30,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:30,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 18:17:30,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289776819] [2022-07-19 18:17:30,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:30,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 18:17:30,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:30,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 18:17:30,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:17:30,934 INFO L87 Difference]: Start difference. First operand 187 states and 237 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:31,647 INFO L93 Difference]: Finished difference Result 455 states and 631 transitions. [2022-07-19 18:17:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 18:17:31,648 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-19 18:17:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:31,649 INFO L225 Difference]: With dead ends: 455 [2022-07-19 18:17:31,649 INFO L226 Difference]: Without dead ends: 435 [2022-07-19 18:17:31,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:17:31,650 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 961 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:31,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 721 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:17:31,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-07-19 18:17:31,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 167. [2022-07-19 18:17:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.3012048192771084) internal successors, (216), 166 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 216 transitions. [2022-07-19 18:17:31,694 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 216 transitions. Word has length 57 [2022-07-19 18:17:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:31,694 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 216 transitions. [2022-07-19 18:17:31,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:31,694 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 216 transitions. [2022-07-19 18:17:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 18:17:31,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:31,695 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:31,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 18:17:31,696 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1117882514, now seen corresponding path program 1 times [2022-07-19 18:17:31,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:31,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767875426] [2022-07-19 18:17:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:31,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:31,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:31,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767875426] [2022-07-19 18:17:31,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767875426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:31,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:31,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:17:31,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133620313] [2022-07-19 18:17:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:31,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:17:31,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:17:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:17:31,751 INFO L87 Difference]: Start difference. First operand 167 states and 216 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:32,058 INFO L93 Difference]: Finished difference Result 671 states and 972 transitions. [2022-07-19 18:17:32,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:17:32,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-19 18:17:32,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:32,068 INFO L225 Difference]: With dead ends: 671 [2022-07-19 18:17:32,068 INFO L226 Difference]: Without dead ends: 587 [2022-07-19 18:17:32,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 18:17:32,076 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 534 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:32,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 463 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:17:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-07-19 18:17:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 249. [2022-07-19 18:17:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3588709677419355) internal successors, (337), 248 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 337 transitions. [2022-07-19 18:17:32,177 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 337 transitions. Word has length 75 [2022-07-19 18:17:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:32,178 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 337 transitions. [2022-07-19 18:17:32,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:32,178 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 337 transitions. [2022-07-19 18:17:32,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:17:32,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:32,180 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:32,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 18:17:32,180 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:32,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:32,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1016465065, now seen corresponding path program 1 times [2022-07-19 18:17:32,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:32,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287580601] [2022-07-19 18:17:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:32,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:32,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:32,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287580601] [2022-07-19 18:17:32,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287580601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:32,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:32,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:17:32,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843089605] [2022-07-19 18:17:32,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:32,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:17:32,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:32,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:17:32,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:17:32,247 INFO L87 Difference]: Start difference. First operand 249 states and 337 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:32,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:32,555 INFO L93 Difference]: Finished difference Result 831 states and 1200 transitions. [2022-07-19 18:17:32,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:17:32,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:17:32,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:32,559 INFO L225 Difference]: With dead ends: 831 [2022-07-19 18:17:32,559 INFO L226 Difference]: Without dead ends: 665 [2022-07-19 18:17:32,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:17:32,560 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 296 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:32,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 422 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:17:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-07-19 18:17:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 413. [2022-07-19 18:17:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.4101941747572815) internal successors, (581), 412 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 581 transitions. [2022-07-19 18:17:32,729 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 581 transitions. Word has length 77 [2022-07-19 18:17:32,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:32,730 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 581 transitions. [2022-07-19 18:17:32,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:32,730 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 581 transitions. [2022-07-19 18:17:32,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:17:32,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:32,731 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:32,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 18:17:32,732 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1101947074, now seen corresponding path program 1 times [2022-07-19 18:17:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:32,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746392024] [2022-07-19 18:17:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:32,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:32,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746392024] [2022-07-19 18:17:32,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746392024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:32,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:32,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:17:32,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639304882] [2022-07-19 18:17:32,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:32,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:17:32,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:32,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:17:32,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:17:32,770 INFO L87 Difference]: Start difference. First operand 413 states and 581 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:33,169 INFO L93 Difference]: Finished difference Result 1021 states and 1471 transitions. [2022-07-19 18:17:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:17:33,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:17:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:33,172 INFO L225 Difference]: With dead ends: 1021 [2022-07-19 18:17:33,173 INFO L226 Difference]: Without dead ends: 691 [2022-07-19 18:17:33,173 INFO L412 NwaCegarLoop]: 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 [2022-07-19 18:17:33,174 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 51 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:33,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 290 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:17:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-19 18:17:33,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2022-07-19 18:17:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.3997093023255813) internal successors, (963), 688 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:33,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 963 transitions. [2022-07-19 18:17:33,413 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 963 transitions. Word has length 77 [2022-07-19 18:17:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:33,414 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 963 transitions. [2022-07-19 18:17:33,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:33,414 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 963 transitions. [2022-07-19 18:17:33,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:17:33,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:33,415 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:33,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 18:17:33,416 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:33,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:33,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1035453562, now seen corresponding path program 1 times [2022-07-19 18:17:33,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:33,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626278031] [2022-07-19 18:17:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:33,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:33,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:33,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626278031] [2022-07-19 18:17:33,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626278031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:33,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:33,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:17:33,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280831097] [2022-07-19 18:17:33,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:33,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:17:33,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:33,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:17:33,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:17:33,457 INFO L87 Difference]: Start difference. First operand 689 states and 963 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:33,741 INFO L93 Difference]: Finished difference Result 1297 states and 1837 transitions. [2022-07-19 18:17:33,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:17:33,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:17:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:33,744 INFO L225 Difference]: With dead ends: 1297 [2022-07-19 18:17:33,744 INFO L226 Difference]: Without dead ends: 691 [2022-07-19 18:17:33,749 INFO L412 NwaCegarLoop]: 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 [2022-07-19 18:17:33,750 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:33,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 209 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:17:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-19 18:17:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2022-07-19 18:17:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.3938953488372092) internal successors, (959), 688 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 959 transitions. [2022-07-19 18:17:34,044 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 959 transitions. Word has length 77 [2022-07-19 18:17:34,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:34,044 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 959 transitions. [2022-07-19 18:17:34,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 959 transitions. [2022-07-19 18:17:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:17:34,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:34,045 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:34,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 18:17:34,046 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:34,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash -401787049, now seen corresponding path program 1 times [2022-07-19 18:17:34,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:34,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450940723] [2022-07-19 18:17:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:34,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450940723] [2022-07-19 18:17:34,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450940723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:34,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:34,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:17:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918407931] [2022-07-19 18:17:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:34,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:17:34,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:17:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:17:34,132 INFO L87 Difference]: Start difference. First operand 689 states and 959 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:34,915 INFO L93 Difference]: Finished difference Result 1755 states and 2487 transitions. [2022-07-19 18:17:34,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:17:34,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:17:34,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:34,921 INFO L225 Difference]: With dead ends: 1755 [2022-07-19 18:17:34,921 INFO L226 Difference]: Without dead ends: 1451 [2022-07-19 18:17:34,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:17:34,923 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 291 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:34,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 461 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:17:34,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2022-07-19 18:17:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1143. [2022-07-19 18:17:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 1.4071803852889668) internal successors, (1607), 1142 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1607 transitions. [2022-07-19 18:17:35,350 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1607 transitions. Word has length 77 [2022-07-19 18:17:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:35,350 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1607 transitions. [2022-07-19 18:17:35,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1607 transitions. [2022-07-19 18:17:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:17:35,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:35,352 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:35,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 18:17:35,353 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:35,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1826714967, now seen corresponding path program 1 times [2022-07-19 18:17:35,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:35,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930359097] [2022-07-19 18:17:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:35,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:35,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:35,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930359097] [2022-07-19 18:17:35,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930359097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:35,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:35,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:17:35,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380723741] [2022-07-19 18:17:35,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:35,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:17:35,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:17:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:17:35,426 INFO L87 Difference]: Start difference. First operand 1143 states and 1607 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:36,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:36,277 INFO L93 Difference]: Finished difference Result 2057 states and 2919 transitions. [2022-07-19 18:17:36,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:17:36,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:17:36,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:36,285 INFO L225 Difference]: With dead ends: 2057 [2022-07-19 18:17:36,285 INFO L226 Difference]: Without dead ends: 1753 [2022-07-19 18:17:36,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:17:36,287 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 291 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:36,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 423 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:17:36,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-07-19 18:17:36,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1445. [2022-07-19 18:17:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.4120498614958448) internal successors, (2039), 1444 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2039 transitions. [2022-07-19 18:17:36,896 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2039 transitions. Word has length 77 [2022-07-19 18:17:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:36,896 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2039 transitions. [2022-07-19 18:17:36,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:36,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2039 transitions. [2022-07-19 18:17:36,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 18:17:36,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:36,898 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:36,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 18:17:36,898 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:36,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:36,899 INFO L85 PathProgramCache]: Analyzing trace with hash 275968985, now seen corresponding path program 1 times [2022-07-19 18:17:36,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:36,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498723155] [2022-07-19 18:17:36,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:36,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:36,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498723155] [2022-07-19 18:17:36,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498723155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:36,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:36,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:17:36,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163577626] [2022-07-19 18:17:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:36,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:17:36,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:17:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:17:36,955 INFO L87 Difference]: Start difference. First operand 1445 states and 2039 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:37,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:37,887 INFO L93 Difference]: Finished difference Result 3683 states and 5215 transitions. [2022-07-19 18:17:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:17:37,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-19 18:17:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:37,896 INFO L225 Difference]: With dead ends: 3683 [2022-07-19 18:17:37,897 INFO L226 Difference]: Without dead ends: 2321 [2022-07-19 18:17:37,899 INFO L412 NwaCegarLoop]: 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 [2022-07-19 18:17:37,900 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 60 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 269 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 [2022-07-19 18:17:37,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:17:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2022-07-19 18:17:38,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 2175. [2022-07-19 18:17:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 2174 states have (on average 1.3942042318307268) internal successors, (3031), 2174 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3031 transitions. [2022-07-19 18:17:38,759 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3031 transitions. Word has length 78 [2022-07-19 18:17:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:38,760 INFO L495 AbstractCegarLoop]: Abstraction has 2175 states and 3031 transitions. [2022-07-19 18:17:38,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:38,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3031 transitions. [2022-07-19 18:17:38,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 18:17:38,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:38,761 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:38,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 18:17:38,762 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:38,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash -163971304, now seen corresponding path program 1 times [2022-07-19 18:17:38,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:38,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36393749] [2022-07-19 18:17:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:38,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:38,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:38,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36393749] [2022-07-19 18:17:38,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36393749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:38,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:38,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:17:38,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006896580] [2022-07-19 18:17:38,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:38,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:17:38,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:38,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:17:38,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:17:38,805 INFO L87 Difference]: Start difference. First operand 2175 states and 3031 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:39,782 INFO L93 Difference]: Finished difference Result 4351 states and 6088 transitions. [2022-07-19 18:17:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:17:39,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-19 18:17:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:39,812 INFO L225 Difference]: With dead ends: 4351 [2022-07-19 18:17:39,813 INFO L226 Difference]: Without dead ends: 2259 [2022-07-19 18:17:39,816 INFO L412 NwaCegarLoop]: 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 [2022-07-19 18:17:39,818 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 68 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:39,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 204 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:17:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2022-07-19 18:17:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2257. [2022-07-19 18:17:40,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.377659574468085) internal successors, (3108), 2256 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3108 transitions. [2022-07-19 18:17:40,816 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3108 transitions. Word has length 79 [2022-07-19 18:17:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:40,816 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3108 transitions. [2022-07-19 18:17:40,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:40,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3108 transitions. [2022-07-19 18:17:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 18:17:40,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:40,818 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:40,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 18:17:40,818 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:40,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1432796505, now seen corresponding path program 1 times [2022-07-19 18:17:40,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:40,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555400252] [2022-07-19 18:17:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:40,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:40,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555400252] [2022-07-19 18:17:40,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555400252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:40,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:40,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:17:40,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815024007] [2022-07-19 18:17:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:40,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:17:40,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:40,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:17:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:17:40,864 INFO L87 Difference]: Start difference. First operand 2257 states and 3108 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:42,404 INFO L93 Difference]: Finished difference Result 6381 states and 8752 transitions. [2022-07-19 18:17:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:17:42,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-19 18:17:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:42,420 INFO L225 Difference]: With dead ends: 6381 [2022-07-19 18:17:42,420 INFO L226 Difference]: Without dead ends: 4207 [2022-07-19 18:17:42,425 INFO L412 NwaCegarLoop]: 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 [2022-07-19 18:17:42,426 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 53 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 265 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 [2022-07-19 18:17:42,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 265 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:17:42,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2022-07-19 18:17:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3981. [2022-07-19 18:17:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3980 states have (on average 1.3560301507537689) internal successors, (5397), 3980 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 5397 transitions. [2022-07-19 18:17:44,025 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 5397 transitions. Word has length 79 [2022-07-19 18:17:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:44,027 INFO L495 AbstractCegarLoop]: Abstraction has 3981 states and 5397 transitions. [2022-07-19 18:17:44,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 5397 transitions. [2022-07-19 18:17:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 18:17:44,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:44,048 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:44,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 18:17:44,050 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:44,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:44,050 INFO L85 PathProgramCache]: Analyzing trace with hash -21206962, now seen corresponding path program 1 times [2022-07-19 18:17:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:44,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417804206] [2022-07-19 18:17:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:44,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:44,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:44,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417804206] [2022-07-19 18:17:44,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417804206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:44,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:44,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:17:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634051147] [2022-07-19 18:17:44,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:44,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:17:44,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:44,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:17:44,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:17:44,115 INFO L87 Difference]: Start difference. First operand 3981 states and 5397 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:47,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:47,035 INFO L93 Difference]: Finished difference Result 11329 states and 15227 transitions. [2022-07-19 18:17:47,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:17:47,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-07-19 18:17:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:47,091 INFO L225 Difference]: With dead ends: 11329 [2022-07-19 18:17:47,103 INFO L226 Difference]: Without dead ends: 7431 [2022-07-19 18:17:47,111 INFO L412 NwaCegarLoop]: 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 [2022-07-19 18:17:47,112 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 43 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 265 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 [2022-07-19 18:17:47,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 265 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:17:47,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2022-07-19 18:17:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 6981. [2022-07-19 18:17:49,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 6980 states have (on average 1.324785100286533) internal successors, (9247), 6980 states have internal predecessors, (9247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 9247 transitions. [2022-07-19 18:17:49,918 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 9247 transitions. Word has length 80 [2022-07-19 18:17:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:49,919 INFO L495 AbstractCegarLoop]: Abstraction has 6981 states and 9247 transitions. [2022-07-19 18:17:49,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 9247 transitions. [2022-07-19 18:17:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-19 18:17:49,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:49,936 INFO L195 NwaCegarLoop]: 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] [2022-07-19 18:17:49,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 18:17:49,936 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:49,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1223980109, now seen corresponding path program 1 times [2022-07-19 18:17:49,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:49,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836377699] [2022-07-19 18:17:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:49,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:50,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:50,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836377699] [2022-07-19 18:17:50,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836377699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:17:50,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:17:50,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:17:50,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951878256] [2022-07-19 18:17:50,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:17:50,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 18:17:50,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:17:50,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 18:17:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 18:17:50,047 INFO L87 Difference]: Start difference. First operand 6981 states and 9247 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:54,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:17:54,896 INFO L93 Difference]: Finished difference Result 10517 states and 13893 transitions. [2022-07-19 18:17:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 18:17:54,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-19 18:17:54,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:17:54,940 INFO L225 Difference]: With dead ends: 10517 [2022-07-19 18:17:54,953 INFO L226 Difference]: Without dead ends: 10515 [2022-07-19 18:17:54,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:17:54,959 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 204 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:17:54,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 639 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:17:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2022-07-19 18:17:58,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 7173. [2022-07-19 18:17:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7173 states, 7172 states have (on average 1.3049358616843278) internal successors, (9359), 7172 states have internal predecessors, (9359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 9359 transitions. [2022-07-19 18:17:58,158 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 9359 transitions. Word has length 81 [2022-07-19 18:17:58,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:17:58,158 INFO L495 AbstractCegarLoop]: Abstraction has 7173 states and 9359 transitions. [2022-07-19 18:17:58,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:17:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 9359 transitions. [2022-07-19 18:17:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-19 18:17:58,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:17:58,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:17:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 18:17:58,162 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:17:58,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:17:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1680108859, now seen corresponding path program 1 times [2022-07-19 18:17:58,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:17:58,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309435470] [2022-07-19 18:17:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:58,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:17:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:58,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:17:58,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309435470] [2022-07-19 18:17:58,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309435470] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 18:17:58,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123415861] [2022-07-19 18:17:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:17:58,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 18:17:58,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:17:58,480 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 18:17:58,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 18:17:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:17:58,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 18:17:58,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 18:17:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:17:59,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 18:18:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:18:01,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123415861] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 18:18:01,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 18:18:01,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-07-19 18:18:01,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551304074] [2022-07-19 18:18:01,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 18:18:01,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-19 18:18:01,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:18:01,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-19 18:18:01,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-07-19 18:18:01,268 INFO L87 Difference]: Start difference. First operand 7173 states and 9359 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 28 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:19:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:19:08,597 INFO L93 Difference]: Finished difference Result 115930 states and 146521 transitions. [2022-07-19 18:19:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2022-07-19 18:19:08,598 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 28 states have internal predecessors, (277), 0 states have call successors, (0), 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 103 [2022-07-19 18:19:08,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:19:08,865 INFO L225 Difference]: With dead ends: 115930 [2022-07-19 18:19:08,865 INFO L226 Difference]: Without dead ends: 108840 [2022-07-19 18:19:08,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66148 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=16579, Invalid=135911, Unknown=0, NotChecked=0, Total=152490 [2022-07-19 18:19:08,952 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 7973 mSDsluCounter, 4172 mSDsCounter, 0 mSdLazyCounter, 3839 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7973 SdHoareTripleChecker+Valid, 4462 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 3839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 18:19:08,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7973 Valid, 4462 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 3839 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 18:19:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108840 states. [2022-07-19 18:19:22,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108840 to 26643. [2022-07-19 18:19:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26643 states, 26642 states have (on average 1.290969146460476) internal successors, (34394), 26642 states have internal predecessors, (34394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:19:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26643 states to 26643 states and 34394 transitions. [2022-07-19 18:19:22,900 INFO L78 Accepts]: Start accepts. Automaton has 26643 states and 34394 transitions. Word has length 103 [2022-07-19 18:19:22,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:19:22,901 INFO L495 AbstractCegarLoop]: Abstraction has 26643 states and 34394 transitions. [2022-07-19 18:19:22,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 28 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:19:22,901 INFO L276 IsEmpty]: Start isEmpty. Operand 26643 states and 34394 transitions. [2022-07-19 18:19:22,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-19 18:19:22,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:19:22,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:19:22,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 18:19:23,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-19 18:19:23,119 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-19 18:19:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:19:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash -448392738, now seen corresponding path program 1 times [2022-07-19 18:19:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:19:23,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907805583] [2022-07-19 18:19:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:19:23,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:19:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:19:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:19:23,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:19:23,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907805583] [2022-07-19 18:19:23,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907805583] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 18:19:23,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734604439] [2022-07-19 18:19:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:19:23,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 18:19:23,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:19:23,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 18:19:23,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 18:19:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:19:23,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-19 18:19:23,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 18:19:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:19:23,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 18:19:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:19:24,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734604439] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 18:19:24,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 18:19:24,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2022-07-19 18:19:24,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560107729] [2022-07-19 18:19:24,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 18:19:24,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 18:19:24,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:19:24,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 18:19:24,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-07-19 18:19:24,728 INFO L87 Difference]: Start difference. First operand 26643 states and 34394 transitions. Second operand has 28 states, 28 states have (on average 10.178571428571429) internal successors, (285), 28 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)