./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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.UNBOUNDED.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 7f3df0b4eae1d513bdc1ba52a53496aa05ff593bd28211e99c6fbfee672a86c9 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:16:14,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:16:14,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:16:15,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:16:15,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:16:15,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:16:15,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:16:15,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:16:15,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:16:15,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:16:15,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:16:15,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:16:15,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:16:15,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:16:15,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:16:15,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:16:15,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:16:15,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:16:15,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:16:15,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:16:15,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:16:15,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:16:15,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:16:15,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:16:15,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:16:15,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:16:15,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:16:15,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:16:15,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:16:15,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:16:15,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:16:15,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:16:15,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:16:15,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:16:15,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:16:15,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:16:15,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:16:15,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:16:15,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:16:15,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:16:15,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:16:15,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:16:15,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:16:15,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:16:15,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:16:15,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:16:15,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:16:15,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:16:15,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:16:15,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:16:15,122 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:16:15,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:16:15,123 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:16:15,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:16:15,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:16:15,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:16:15,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:16:15,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:16:15,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:16:15,124 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:16:15,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:16:15,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:16:15,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:16:15,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:16:15,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:16:15,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:16:15,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:16:15,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:16:15,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:16:15,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:16:15,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:16:15,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:16:15,128 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:16:15,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:16:15,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:16:15,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:16:15,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f3df0b4eae1d513bdc1ba52a53496aa05ff593bd28211e99c6fbfee672a86c9 [2021-12-14 15:16:15,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:16:15,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:16:15,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:16:15,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:16:15,383 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:16:15,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-14 15:16:15,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa41605d6/76112ac6e44440d5be4731d4a2992b6e/FLAGde3589990 [2021-12-14 15:16:15,890 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:16:15,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-14 15:16:15,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa41605d6/76112ac6e44440d5be4731d4a2992b6e/FLAGde3589990 [2021-12-14 15:16:16,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa41605d6/76112ac6e44440d5be4731d4a2992b6e [2021-12-14 15:16:16,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:16:16,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:16:16,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:16:16,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:16:16,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:16:16,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:16,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6a2e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16, skipping insertion in model container [2021-12-14 15:16:16,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:16,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:16:16,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:16:16,705 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.UNBOUNDED.pals.c.v+sep-reducer.c[5819,5832] [2021-12-14 15:16:16,731 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.UNBOUNDED.pals.c.v+sep-reducer.c[8492,8505] [2021-12-14 15:16:16,753 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.UNBOUNDED.pals.c.v+sep-reducer.c[11299,11312] [2021-12-14 15:16:16,767 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.UNBOUNDED.pals.c.v+sep-reducer.c[13874,13887] [2021-12-14 15:16:16,778 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16880,16893] [2021-12-14 15:16:16,786 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.UNBOUNDED.pals.c.v+sep-reducer.c[19470,19483] [2021-12-14 15:16:16,795 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.UNBOUNDED.pals.c.v+sep-reducer.c[22230,22243] [2021-12-14 15:16:16,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:16:16,826 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:16:16,871 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.UNBOUNDED.pals.c.v+sep-reducer.c[5819,5832] [2021-12-14 15:16:16,887 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.UNBOUNDED.pals.c.v+sep-reducer.c[8492,8505] [2021-12-14 15:16:16,906 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.UNBOUNDED.pals.c.v+sep-reducer.c[11299,11312] [2021-12-14 15:16:16,912 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.UNBOUNDED.pals.c.v+sep-reducer.c[13874,13887] [2021-12-14 15:16:16,919 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.UNBOUNDED.pals.c.v+sep-reducer.c[16880,16893] [2021-12-14 15:16:16,925 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.UNBOUNDED.pals.c.v+sep-reducer.c[19470,19483] [2021-12-14 15:16:16,932 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.UNBOUNDED.pals.c.v+sep-reducer.c[22230,22243] [2021-12-14 15:16:16,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:16:16,961 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:16:16,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16 WrapperNode [2021-12-14 15:16:16,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:16:16,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:16:16,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:16:16,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:16:16,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:16,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:17,039 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1247 [2021-12-14 15:16:17,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:16:17,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:16:17,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:16:17,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:16:17,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:17,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:17,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:17,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:17,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:17,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:17,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:17,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:16:17,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:16:17,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:16:17,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:16:17,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (1/1) ... [2021-12-14 15:16:17,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:16:17,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:16:17,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:16:17,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:16:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:16:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:16:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:16:17,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:16:17,320 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:16:17,322 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:16:18,049 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:16:18,058 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:16:18,059 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 15:16:18,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:16:18 BoogieIcfgContainer [2021-12-14 15:16:18,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:16:18,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:16:18,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:16:18,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:16:18,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:16:16" (1/3) ... [2021-12-14 15:16:18,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232f19df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:16:18, skipping insertion in model container [2021-12-14 15:16:18,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:16:16" (2/3) ... [2021-12-14 15:16:18,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232f19df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:16:18, skipping insertion in model container [2021-12-14 15:16:18,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:16:18" (3/3) ... [2021-12-14 15:16:18,069 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-14 15:16:18,073 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:16:18,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-14 15:16:18,115 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:16:18,121 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:16:18,122 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-14 15:16:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 258 states have (on average 1.8294573643410852) internal successors, (472), 265 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 15:16:18,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:18,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:18,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:18,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:18,154 INFO L85 PathProgramCache]: Analyzing trace with hash -102713619, now seen corresponding path program 1 times [2021-12-14 15:16:18,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:18,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006297307] [2021-12-14 15:16:18,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:18,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:18,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:18,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006297307] [2021-12-14 15:16:18,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006297307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:18,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:18,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:16:18,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62548918] [2021-12-14 15:16:18,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:18,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:16:18,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:18,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:16:18,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:16:18,501 INFO L87 Difference]: Start difference. First operand has 266 states, 258 states have (on average 1.8294573643410852) internal successors, (472), 265 states have internal predecessors, (472), 0 states have call successors, (0), 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 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:18,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:18,717 INFO L93 Difference]: Finished difference Result 343 states and 586 transitions. [2021-12-14 15:16:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:16:18,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-12-14 15:16:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:18,728 INFO L225 Difference]: With dead ends: 343 [2021-12-14 15:16:18,728 INFO L226 Difference]: Without dead ends: 193 [2021-12-14 15:16:18,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:16:18,750 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 928 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:18,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 249 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:16:18,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-14 15:16:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-12-14 15:16:18,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.2795698924731183) internal successors, (238), 192 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:18,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2021-12-14 15:16:18,809 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 47 [2021-12-14 15:16:18,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:18,810 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2021-12-14 15:16:18,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2021-12-14 15:16:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 15:16:18,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:18,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:18,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:16:18,813 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:18,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1933719334, now seen corresponding path program 1 times [2021-12-14 15:16:18,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:18,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334888888] [2021-12-14 15:16:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:18,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:18,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:18,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334888888] [2021-12-14 15:16:18,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334888888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:18,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:18,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:16:18,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644060909] [2021-12-14 15:16:18,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:18,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:16:18,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:18,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:16:18,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:16:18,907 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:19,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:19,093 INFO L93 Difference]: Finished difference Result 279 states and 353 transitions. [2021-12-14 15:16:19,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:16:19,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-12-14 15:16:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:19,096 INFO L225 Difference]: With dead ends: 279 [2021-12-14 15:16:19,096 INFO L226 Difference]: Without dead ends: 177 [2021-12-14 15:16:19,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:16:19,098 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 592 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:19,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 139 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:16:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-14 15:16:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-12-14 15:16:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 170 states have (on average 1.2882352941176471) internal successors, (219), 176 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 219 transitions. [2021-12-14 15:16:19,116 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 219 transitions. Word has length 47 [2021-12-14 15:16:19,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:19,116 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 219 transitions. [2021-12-14 15:16:19,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 219 transitions. [2021-12-14 15:16:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 15:16:19,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:19,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:19,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:16:19,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:19,119 INFO L85 PathProgramCache]: Analyzing trace with hash 458596476, now seen corresponding path program 1 times [2021-12-14 15:16:19,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:19,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336982935] [2021-12-14 15:16:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:19,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:19,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:19,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:19,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336982935] [2021-12-14 15:16:19,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336982935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:19,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:19,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:16:19,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992788033] [2021-12-14 15:16:19,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:19,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:16:19,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:19,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:16:19,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:16:19,262 INFO L87 Difference]: Start difference. First operand 177 states and 219 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:19,461 INFO L93 Difference]: Finished difference Result 339 states and 435 transitions. [2021-12-14 15:16:19,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:16:19,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-12-14 15:16:19,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:19,467 INFO L225 Difference]: With dead ends: 339 [2021-12-14 15:16:19,467 INFO L226 Difference]: Without dead ends: 239 [2021-12-14 15:16:19,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:16:19,472 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 760 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:19,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 190 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:16:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-14 15:16:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 215. [2021-12-14 15:16:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.3509615384615385) internal successors, (281), 214 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 281 transitions. [2021-12-14 15:16:19,510 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 281 transitions. Word has length 47 [2021-12-14 15:16:19,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:19,510 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 281 transitions. [2021-12-14 15:16:19,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 281 transitions. [2021-12-14 15:16:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 15:16:19,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:19,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:19,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:16:19,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:19,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1498085814, now seen corresponding path program 1 times [2021-12-14 15:16:19,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:19,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206176549] [2021-12-14 15:16:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:19,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:19,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:19,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206176549] [2021-12-14 15:16:19,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206176549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:19,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:19,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:16:19,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881476169] [2021-12-14 15:16:19,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:19,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:16:19,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:19,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:16:19,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:16:19,737 INFO L87 Difference]: Start difference. First operand 215 states and 281 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:20,248 INFO L93 Difference]: Finished difference Result 530 states and 734 transitions. [2021-12-14 15:16:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:16:20,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-12-14 15:16:20,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:20,254 INFO L225 Difference]: With dead ends: 530 [2021-12-14 15:16:20,254 INFO L226 Difference]: Without dead ends: 525 [2021-12-14 15:16:20,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:16:20,261 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1209 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:20,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 613 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:16:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-12-14 15:16:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 215. [2021-12-14 15:16:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.3461538461538463) internal successors, (280), 214 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 280 transitions. [2021-12-14 15:16:20,299 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 280 transitions. Word has length 48 [2021-12-14 15:16:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:20,300 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 280 transitions. [2021-12-14 15:16:20,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 280 transitions. [2021-12-14 15:16:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 15:16:20,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:20,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:20,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:16:20,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash 267052195, now seen corresponding path program 1 times [2021-12-14 15:16:20,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:20,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917572414] [2021-12-14 15:16:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:20,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:20,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:20,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917572414] [2021-12-14 15:16:20,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917572414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:20,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:20,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:16:20,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219395239] [2021-12-14 15:16:20,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:20,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:16:20,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:20,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:16:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:16:20,446 INFO L87 Difference]: Start difference. First operand 215 states and 280 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:20,970 INFO L93 Difference]: Finished difference Result 534 states and 737 transitions. [2021-12-14 15:16:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:16:20,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-12-14 15:16:20,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:20,973 INFO L225 Difference]: With dead ends: 534 [2021-12-14 15:16:20,973 INFO L226 Difference]: Without dead ends: 433 [2021-12-14 15:16:20,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:16:20,974 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 1028 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:20,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 818 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:16:20,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-12-14 15:16:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 215. [2021-12-14 15:16:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.3413461538461537) internal successors, (279), 214 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2021-12-14 15:16:20,990 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 48 [2021-12-14 15:16:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:20,990 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2021-12-14 15:16:20,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:20,991 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2021-12-14 15:16:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 15:16:20,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:20,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:20,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:16:20,992 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:20,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:20,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1788008380, now seen corresponding path program 1 times [2021-12-14 15:16:20,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:20,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273334101] [2021-12-14 15:16:20,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:20,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:21,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:21,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273334101] [2021-12-14 15:16:21,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273334101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:21,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:21,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:16:21,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260800035] [2021-12-14 15:16:21,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:21,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:16:21,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:21,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:16:21,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:16:21,109 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:21,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:21,355 INFO L93 Difference]: Finished difference Result 459 states and 614 transitions. [2021-12-14 15:16:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:16:21,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-12-14 15:16:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:21,358 INFO L225 Difference]: With dead ends: 459 [2021-12-14 15:16:21,358 INFO L226 Difference]: Without dead ends: 335 [2021-12-14 15:16:21,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-12-14 15:16:21,359 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1180 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:21,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 302 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:16:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-12-14 15:16:21,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 215. [2021-12-14 15:16:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 208 states have (on average 1.3365384615384615) internal successors, (278), 214 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 278 transitions. [2021-12-14 15:16:21,380 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 278 transitions. Word has length 48 [2021-12-14 15:16:21,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:21,381 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 278 transitions. [2021-12-14 15:16:21,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:21,381 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 278 transitions. [2021-12-14 15:16:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 15:16:21,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:21,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:21,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:16:21,382 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1932349207, now seen corresponding path program 1 times [2021-12-14 15:16:21,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:21,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573700024] [2021-12-14 15:16:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:21,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:21,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:21,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573700024] [2021-12-14 15:16:21,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573700024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:21,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:21,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-14 15:16:21,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230557042] [2021-12-14 15:16:21,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:21,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 15:16:21,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:21,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 15:16:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:16:21,907 INFO L87 Difference]: Start difference. First operand 215 states and 278 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:16:23,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:23,375 INFO L93 Difference]: Finished difference Result 403 states and 529 transitions. [2021-12-14 15:16:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 15:16:23,375 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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 [2021-12-14 15:16:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:23,377 INFO L225 Difference]: With dead ends: 403 [2021-12-14 15:16:23,377 INFO L226 Difference]: Without dead ends: 399 [2021-12-14 15:16:23,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=246, Invalid=1086, Unknown=0, NotChecked=0, Total=1332 [2021-12-14 15:16:23,379 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 993 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:23,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 2350 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:16:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-12-14 15:16:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 219. [2021-12-14 15:16:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 212 states have (on average 1.3396226415094339) internal successors, (284), 218 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 284 transitions. [2021-12-14 15:16:23,396 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 284 transitions. Word has length 50 [2021-12-14 15:16:23,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:23,396 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 284 transitions. [2021-12-14 15:16:23,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:16:23,397 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 284 transitions. [2021-12-14 15:16:23,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 15:16:23,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:23,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:23,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:16:23,399 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1779763646, now seen corresponding path program 1 times [2021-12-14 15:16:23,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:23,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491020699] [2021-12-14 15:16:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:23,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:23,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:23,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491020699] [2021-12-14 15:16:23,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491020699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:23,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:23,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-14 15:16:23,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095320191] [2021-12-14 15:16:23,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:23,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 15:16:23,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:23,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 15:16:23,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:16:23,877 INFO L87 Difference]: Start difference. First operand 219 states and 284 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:16:25,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:25,202 INFO L93 Difference]: Finished difference Result 472 states and 643 transitions. [2021-12-14 15:16:25,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 15:16:25,206 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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 [2021-12-14 15:16:25,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:25,208 INFO L225 Difference]: With dead ends: 472 [2021-12-14 15:16:25,208 INFO L226 Difference]: Without dead ends: 384 [2021-12-14 15:16:25,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2021-12-14 15:16:25,209 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 924 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:25,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 2085 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:16:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-12-14 15:16:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 225. [2021-12-14 15:16:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 218 states have (on average 1.3394495412844036) internal successors, (292), 224 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 292 transitions. [2021-12-14 15:16:25,230 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 292 transitions. Word has length 50 [2021-12-14 15:16:25,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:25,231 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 292 transitions. [2021-12-14 15:16:25,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:16:25,231 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 292 transitions. [2021-12-14 15:16:25,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 15:16:25,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:25,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:25,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:16:25,233 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:25,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1793833253, now seen corresponding path program 1 times [2021-12-14 15:16:25,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:25,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028250321] [2021-12-14 15:16:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:25,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:25,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:25,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028250321] [2021-12-14 15:16:25,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028250321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:25,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:25,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-14 15:16:25,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937150690] [2021-12-14 15:16:25,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:25,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 15:16:25,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:25,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 15:16:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:16:25,713 INFO L87 Difference]: Start difference. First operand 225 states and 292 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:16:27,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:27,192 INFO L93 Difference]: Finished difference Result 589 states and 823 transitions. [2021-12-14 15:16:27,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-14 15:16:27,193 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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 [2021-12-14 15:16:27,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:27,196 INFO L225 Difference]: With dead ends: 589 [2021-12-14 15:16:27,196 INFO L226 Difference]: Without dead ends: 583 [2021-12-14 15:16:27,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2021-12-14 15:16:27,197 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1898 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:27,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1898 Valid, 2156 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:16:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-12-14 15:16:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 225. [2021-12-14 15:16:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 218 states have (on average 1.334862385321101) internal successors, (291), 224 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 291 transitions. [2021-12-14 15:16:27,214 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 291 transitions. Word has length 50 [2021-12-14 15:16:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:27,214 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 291 transitions. [2021-12-14 15:16:27,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:16:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 291 transitions. [2021-12-14 15:16:27,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 15:16:27,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:27,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:27,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:16:27,216 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1827600366, now seen corresponding path program 1 times [2021-12-14 15:16:27,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:27,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983684005] [2021-12-14 15:16:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:27,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:27,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:27,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983684005] [2021-12-14 15:16:27,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983684005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:27,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:27,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:16:27,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978372450] [2021-12-14 15:16:27,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:27,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:16:27,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:27,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:16:27,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:16:27,525 INFO L87 Difference]: Start difference. First operand 225 states and 291 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 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) [2021-12-14 15:16:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:28,072 INFO L93 Difference]: Finished difference Result 444 states and 618 transitions. [2021-12-14 15:16:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 15:16:28,073 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 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 [2021-12-14 15:16:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:28,075 INFO L225 Difference]: With dead ends: 444 [2021-12-14 15:16:28,075 INFO L226 Difference]: Without dead ends: 349 [2021-12-14 15:16:28,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:16:28,076 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 974 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:28,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 1047 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:16:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-12-14 15:16:28,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 214. [2021-12-14 15:16:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.3413461538461537) internal successors, (279), 213 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 279 transitions. [2021-12-14 15:16:28,097 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 279 transitions. Word has length 50 [2021-12-14 15:16:28,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:28,097 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 279 transitions. [2021-12-14 15:16:28,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 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) [2021-12-14 15:16:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 279 transitions. [2021-12-14 15:16:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:16:28,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:28,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:28,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:16:28,099 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash -767196360, now seen corresponding path program 1 times [2021-12-14 15:16:28,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:28,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376916999] [2021-12-14 15:16:28,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:28,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:28,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:28,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376916999] [2021-12-14 15:16:28,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376916999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:28,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:28,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:16:28,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602719338] [2021-12-14 15:16:28,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:28,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:16:28,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:28,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:16:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:16:28,221 INFO L87 Difference]: Start difference. First operand 214 states and 279 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:28,562 INFO L93 Difference]: Finished difference Result 349 states and 461 transitions. [2021-12-14 15:16:28,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 15:16:28,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-14 15:16:28,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:28,565 INFO L225 Difference]: With dead ends: 349 [2021-12-14 15:16:28,565 INFO L226 Difference]: Without dead ends: 342 [2021-12-14 15:16:28,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:16:28,566 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 949 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:28,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 471 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:16:28,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-14 15:16:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 214. [2021-12-14 15:16:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.3317307692307692) internal successors, (277), 213 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) [2021-12-14 15:16:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 277 transitions. [2021-12-14 15:16:28,585 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 277 transitions. Word has length 51 [2021-12-14 15:16:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:28,585 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 277 transitions. [2021-12-14 15:16:28,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 277 transitions. [2021-12-14 15:16:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:16:28,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:28,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:28,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:16:28,586 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:28,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1195663953, now seen corresponding path program 1 times [2021-12-14 15:16:28,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:28,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363825327] [2021-12-14 15:16:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:28,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:28,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:28,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363825327] [2021-12-14 15:16:28,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363825327] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:28,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:28,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 15:16:28,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979472526] [2021-12-14 15:16:28,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:28,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 15:16:28,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 15:16:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:16:28,719 INFO L87 Difference]: Start difference. First operand 214 states and 277 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:29,383 INFO L93 Difference]: Finished difference Result 547 states and 759 transitions. [2021-12-14 15:16:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 15:16:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-14 15:16:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:29,385 INFO L225 Difference]: With dead ends: 547 [2021-12-14 15:16:29,385 INFO L226 Difference]: Without dead ends: 433 [2021-12-14 15:16:29,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-12-14 15:16:29,387 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 1277 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:29,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 752 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:16:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-12-14 15:16:29,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 214. [2021-12-14 15:16:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.3221153846153846) internal successors, (275), 213 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 275 transitions. [2021-12-14 15:16:29,407 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 275 transitions. Word has length 51 [2021-12-14 15:16:29,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:29,407 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 275 transitions. [2021-12-14 15:16:29,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:29,408 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 275 transitions. [2021-12-14 15:16:29,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:16:29,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:29,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:29,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:16:29,409 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:29,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:29,410 INFO L85 PathProgramCache]: Analyzing trace with hash 72941877, now seen corresponding path program 1 times [2021-12-14 15:16:29,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:29,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582939042] [2021-12-14 15:16:29,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:29,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:29,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:29,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582939042] [2021-12-14 15:16:29,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582939042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:29,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:29,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:16:29,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083721282] [2021-12-14 15:16:29,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:29,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:16:29,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:29,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:16:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:16:29,642 INFO L87 Difference]: Start difference. First operand 214 states and 275 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:30,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:30,053 INFO L93 Difference]: Finished difference Result 457 states and 632 transitions. [2021-12-14 15:16:30,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 15:16:30,053 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-14 15:16:30,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:30,056 INFO L225 Difference]: With dead ends: 457 [2021-12-14 15:16:30,056 INFO L226 Difference]: Without dead ends: 437 [2021-12-14 15:16:30,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-12-14 15:16:30,057 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 854 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:30,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 1477 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:16:30,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-12-14 15:16:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 194. [2021-12-14 15:16:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.3263157894736841) internal successors, (252), 193 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 252 transitions. [2021-12-14 15:16:30,078 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 252 transitions. Word has length 51 [2021-12-14 15:16:30,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:30,079 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 252 transitions. [2021-12-14 15:16:30,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:30,079 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 252 transitions. [2021-12-14 15:16:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:16:30,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:30,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:30,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:16:30,080 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:30,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash -314877430, now seen corresponding path program 1 times [2021-12-14 15:16:30,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:30,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670259373] [2021-12-14 15:16:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:30,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:30,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:30,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670259373] [2021-12-14 15:16:30,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670259373] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:30,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:30,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 15:16:30,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552012724] [2021-12-14 15:16:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:30,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:16:30,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:16:30,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:16:30,240 INFO L87 Difference]: Start difference. First operand 194 states and 252 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:31,275 INFO L93 Difference]: Finished difference Result 980 states and 1396 transitions. [2021-12-14 15:16:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-14 15:16:31,276 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-14 15:16:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:31,280 INFO L225 Difference]: With dead ends: 980 [2021-12-14 15:16:31,280 INFO L226 Difference]: Without dead ends: 973 [2021-12-14 15:16:31,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-14 15:16:31,281 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1873 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1873 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:31,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1873 Valid, 771 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:16:31,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2021-12-14 15:16:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 194. [2021-12-14 15:16:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 190 states have (on average 1.3210526315789475) internal successors, (251), 193 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 251 transitions. [2021-12-14 15:16:31,309 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 251 transitions. Word has length 51 [2021-12-14 15:16:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:31,309 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 251 transitions. [2021-12-14 15:16:31,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:31,309 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 251 transitions. [2021-12-14 15:16:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:16:31,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:31,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:31,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:16:31,310 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:31,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1266894549, now seen corresponding path program 1 times [2021-12-14 15:16:31,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:31,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119504719] [2021-12-14 15:16:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:31,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:31,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:31,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:31,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119504719] [2021-12-14 15:16:31,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119504719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:31,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:31,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-14 15:16:31,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626687026] [2021-12-14 15:16:31,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:31,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 15:16:31,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 15:16:31,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-14 15:16:31,621 INFO L87 Difference]: Start difference. First operand 194 states and 251 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:32,315 INFO L93 Difference]: Finished difference Result 418 states and 565 transitions. [2021-12-14 15:16:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 15:16:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-14 15:16:32,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:32,317 INFO L225 Difference]: With dead ends: 418 [2021-12-14 15:16:32,317 INFO L226 Difference]: Without dead ends: 330 [2021-12-14 15:16:32,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2021-12-14 15:16:32,321 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 460 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:32,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 1771 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:16:32,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-14 15:16:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 188. [2021-12-14 15:16:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 185 states have (on average 1.3135135135135134) internal successors, (243), 187 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 243 transitions. [2021-12-14 15:16:32,352 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 243 transitions. Word has length 51 [2021-12-14 15:16:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:32,352 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 243 transitions. [2021-12-14 15:16:32,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 243 transitions. [2021-12-14 15:16:32,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 15:16:32,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:32,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:32,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 15:16:32,357 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:32,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:32,357 INFO L85 PathProgramCache]: Analyzing trace with hash 966049747, now seen corresponding path program 1 times [2021-12-14 15:16:32,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:32,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487592533] [2021-12-14 15:16:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:32,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:32,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:32,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487592533] [2021-12-14 15:16:32,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487592533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:32,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:32,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:16:32,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218893109] [2021-12-14 15:16:32,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:32,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:16:32,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:16:32,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:16:32,448 INFO L87 Difference]: Start difference. First operand 188 states and 243 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:32,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:32,820 INFO L93 Difference]: Finished difference Result 325 states and 428 transitions. [2021-12-14 15:16:32,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 15:16:32,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-14 15:16:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:32,822 INFO L225 Difference]: With dead ends: 325 [2021-12-14 15:16:32,823 INFO L226 Difference]: Without dead ends: 318 [2021-12-14 15:16:32,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:16:32,823 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 460 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:32,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 595 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:16:32,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-12-14 15:16:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 184. [2021-12-14 15:16:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.3149171270718232) internal successors, (238), 183 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-12-14 15:16:32,850 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 52 [2021-12-14 15:16:32,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:32,851 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-12-14 15:16:32,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:32,851 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2021-12-14 15:16:32,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 15:16:32,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:32,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:32,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 15:16:32,852 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:32,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:32,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1837589620, now seen corresponding path program 1 times [2021-12-14 15:16:32,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:32,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74649780] [2021-12-14 15:16:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:32,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:32,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:33,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:33,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74649780] [2021-12-14 15:16:33,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74649780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:33,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:33,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-14 15:16:33,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301764779] [2021-12-14 15:16:33,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:33,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 15:16:33,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:33,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 15:16:33,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-14 15:16:33,228 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:34,106 INFO L93 Difference]: Finished difference Result 400 states and 543 transitions. [2021-12-14 15:16:34,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 15:16:34,107 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-12-14 15:16:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:34,109 INFO L225 Difference]: With dead ends: 400 [2021-12-14 15:16:34,109 INFO L226 Difference]: Without dead ends: 394 [2021-12-14 15:16:34,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2021-12-14 15:16:34,110 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 692 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:34,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 2043 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:16:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-14 15:16:34,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 190. [2021-12-14 15:16:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 187 states have (on average 1.3155080213903743) internal successors, (246), 189 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) [2021-12-14 15:16:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 246 transitions. [2021-12-14 15:16:34,139 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 246 transitions. Word has length 53 [2021-12-14 15:16:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:34,139 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 246 transitions. [2021-12-14 15:16:34,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 246 transitions. [2021-12-14 15:16:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 15:16:34,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:34,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:34,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 15:16:34,141 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash 202849221, now seen corresponding path program 1 times [2021-12-14 15:16:34,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:34,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770341927] [2021-12-14 15:16:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:34,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:34,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:34,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:34,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770341927] [2021-12-14 15:16:34,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770341927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:34,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:34,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 15:16:34,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370705830] [2021-12-14 15:16:34,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:34,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 15:16:34,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:34,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 15:16:34,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:16:34,352 INFO L87 Difference]: Start difference. First operand 190 states and 246 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:34,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:34,813 INFO L93 Difference]: Finished difference Result 462 states and 649 transitions. [2021-12-14 15:16:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:16:34,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-12-14 15:16:34,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:34,815 INFO L225 Difference]: With dead ends: 462 [2021-12-14 15:16:34,815 INFO L226 Difference]: Without dead ends: 444 [2021-12-14 15:16:34,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:16:34,817 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 768 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:34,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 877 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:16:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-12-14 15:16:34,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 172. [2021-12-14 15:16:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 171 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 226 transitions. [2021-12-14 15:16:34,844 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 226 transitions. Word has length 53 [2021-12-14 15:16:34,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:34,845 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 226 transitions. [2021-12-14 15:16:34,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 226 transitions. [2021-12-14 15:16:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 15:16:34,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:34,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:34,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 15:16:34,846 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:34,847 INFO L85 PathProgramCache]: Analyzing trace with hash 576756188, now seen corresponding path program 1 times [2021-12-14 15:16:34,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:34,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226790332] [2021-12-14 15:16:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:34,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:35,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:35,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226790332] [2021-12-14 15:16:35,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226790332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:35,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:35,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:16:35,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374756163] [2021-12-14 15:16:35,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:35,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:16:35,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:35,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:16:35,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:16:35,082 INFO L87 Difference]: Start difference. First operand 172 states and 226 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:35,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:35,609 INFO L93 Difference]: Finished difference Result 472 states and 661 transitions. [2021-12-14 15:16:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:16:35,609 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-14 15:16:35,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:35,610 INFO L225 Difference]: With dead ends: 472 [2021-12-14 15:16:35,611 INFO L226 Difference]: Without dead ends: 466 [2021-12-14 15:16:35,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:16:35,611 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 374 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:35,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1658 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:16:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-12-14 15:16:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 160. [2021-12-14 15:16:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.3270440251572326) internal successors, (211), 159 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 211 transitions. [2021-12-14 15:16:35,640 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 211 transitions. Word has length 54 [2021-12-14 15:16:35,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:35,640 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 211 transitions. [2021-12-14 15:16:35,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 211 transitions. [2021-12-14 15:16:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 15:16:35,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:35,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:35,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 15:16:35,641 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash 415256315, now seen corresponding path program 1 times [2021-12-14 15:16:35,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:35,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435462493] [2021-12-14 15:16:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:35,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:35,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:35,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435462493] [2021-12-14 15:16:35,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435462493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:35,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:35,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:16:35,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844244871] [2021-12-14 15:16:35,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:35,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:16:35,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:35,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:16:35,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:16:35,687 INFO L87 Difference]: Start difference. First operand 160 states and 211 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:35,873 INFO L93 Difference]: Finished difference Result 664 states and 979 transitions. [2021-12-14 15:16:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:16:35,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-14 15:16:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:35,876 INFO L225 Difference]: With dead ends: 664 [2021-12-14 15:16:35,876 INFO L226 Difference]: Without dead ends: 580 [2021-12-14 15:16:35,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:16:35,877 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 492 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:35,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 506 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-12-14 15:16:35,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 242. [2021-12-14 15:16:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.3858921161825726) internal successors, (334), 241 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 334 transitions. [2021-12-14 15:16:35,933 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 334 transitions. Word has length 71 [2021-12-14 15:16:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:35,934 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 334 transitions. [2021-12-14 15:16:35,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 334 transitions. [2021-12-14 15:16:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:16:35,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:35,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:35,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 15:16:35,935 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash -237734748, now seen corresponding path program 1 times [2021-12-14 15:16:35,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:35,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699216808] [2021-12-14 15:16:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:35,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:35,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:35,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699216808] [2021-12-14 15:16:35,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699216808] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:35,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:35,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:16:35,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872331020] [2021-12-14 15:16:35,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:35,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:16:35,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:35,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:16:35,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:16:35,991 INFO L87 Difference]: Start difference. First operand 242 states and 334 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:36,203 INFO L93 Difference]: Finished difference Result 824 states and 1211 transitions. [2021-12-14 15:16:36,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:16:36,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-14 15:16:36,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:36,206 INFO L225 Difference]: With dead ends: 824 [2021-12-14 15:16:36,206 INFO L226 Difference]: Without dead ends: 658 [2021-12-14 15:16:36,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:16:36,207 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 292 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:36,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 438 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-12-14 15:16:36,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 406. [2021-12-14 15:16:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.4370370370370371) internal successors, (582), 405 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 582 transitions. [2021-12-14 15:16:36,313 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 582 transitions. Word has length 73 [2021-12-14 15:16:36,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:36,314 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 582 transitions. [2021-12-14 15:16:36,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 582 transitions. [2021-12-14 15:16:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:16:36,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:36,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:36,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 15:16:36,316 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:36,316 INFO L85 PathProgramCache]: Analyzing trace with hash -871401261, now seen corresponding path program 1 times [2021-12-14 15:16:36,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:36,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664416893] [2021-12-14 15:16:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:36,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:36,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:36,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664416893] [2021-12-14 15:16:36,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664416893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:36,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:36,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:16:36,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692305561] [2021-12-14 15:16:36,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:36,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:16:36,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:36,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:16:36,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:36,360 INFO L87 Difference]: Start difference. First operand 406 states and 582 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:36,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:36,470 INFO L93 Difference]: Finished difference Result 738 states and 1082 transitions. [2021-12-14 15:16:36,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:16:36,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-14 15:16:36,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:36,475 INFO L225 Difference]: With dead ends: 738 [2021-12-14 15:16:36,475 INFO L226 Difference]: Without dead ends: 408 [2021-12-14 15:16:36,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:36,478 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 52 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:36,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 201 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-14 15:16:36,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 406. [2021-12-14 15:16:36,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.4271604938271605) internal successors, (578), 405 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 578 transitions. [2021-12-14 15:16:36,563 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 578 transitions. Word has length 73 [2021-12-14 15:16:36,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:36,563 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 578 transitions. [2021-12-14 15:16:36,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 578 transitions. [2021-12-14 15:16:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:16:36,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:36,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:36,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 15:16:36,565 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:36,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:36,566 INFO L85 PathProgramCache]: Analyzing trace with hash -937894773, now seen corresponding path program 1 times [2021-12-14 15:16:36,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:36,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908303322] [2021-12-14 15:16:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:36,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:36,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908303322] [2021-12-14 15:16:36,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908303322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:36,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:36,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:16:36,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844530081] [2021-12-14 15:16:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:36,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:16:36,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:36,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:16:36,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:36,600 INFO L87 Difference]: Start difference. First operand 406 states and 578 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:36,768 INFO L93 Difference]: Finished difference Result 1014 states and 1480 transitions. [2021-12-14 15:16:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:16:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-14 15:16:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:36,771 INFO L225 Difference]: With dead ends: 1014 [2021-12-14 15:16:36,771 INFO L226 Difference]: Without dead ends: 684 [2021-12-14 15:16:36,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:36,772 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 67 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:36,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 197 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:36,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-12-14 15:16:36,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 674. [2021-12-14 15:16:36,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.4205052005943537) internal successors, (956), 673 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:36,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 956 transitions. [2021-12-14 15:16:36,923 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 956 transitions. Word has length 73 [2021-12-14 15:16:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:36,923 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 956 transitions. [2021-12-14 15:16:36,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:36,924 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 956 transitions. [2021-12-14 15:16:36,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:16:36,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:36,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:36,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 15:16:36,925 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:36,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash -852412764, now seen corresponding path program 1 times [2021-12-14 15:16:36,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:36,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879245900] [2021-12-14 15:16:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:36,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:36,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:36,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879245900] [2021-12-14 15:16:36,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879245900] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:36,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:36,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:16:36,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354438457] [2021-12-14 15:16:36,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:36,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:16:36,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:36,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:16:36,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:16:36,973 INFO L87 Difference]: Start difference. First operand 674 states and 956 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:37,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:37,401 INFO L93 Difference]: Finished difference Result 1726 states and 2490 transitions. [2021-12-14 15:16:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:16:37,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-14 15:16:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:37,406 INFO L225 Difference]: With dead ends: 1726 [2021-12-14 15:16:37,406 INFO L226 Difference]: Without dead ends: 1426 [2021-12-14 15:16:37,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:16:37,407 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 295 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:37,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 438 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-12-14 15:16:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1122. [2021-12-14 15:16:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.4326494201605708) internal successors, (1606), 1121 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:37,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1606 transitions. [2021-12-14 15:16:37,661 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1606 transitions. Word has length 73 [2021-12-14 15:16:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:37,661 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1606 transitions. [2021-12-14 15:16:37,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1606 transitions. [2021-12-14 15:16:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 15:16:37,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:37,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:37,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-14 15:16:37,663 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:37,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:37,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1459706699, now seen corresponding path program 1 times [2021-12-14 15:16:37,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:37,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309373212] [2021-12-14 15:16:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:37,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:37,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:37,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309373212] [2021-12-14 15:16:37,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309373212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:37,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:37,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:16:37,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242349775] [2021-12-14 15:16:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:37,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:16:37,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:37,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:16:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:37,695 INFO L87 Difference]: Start difference. First operand 1122 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:38,075 INFO L93 Difference]: Finished difference Result 2526 states and 3651 transitions. [2021-12-14 15:16:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:16:38,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-14 15:16:38,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:38,080 INFO L225 Difference]: With dead ends: 2526 [2021-12-14 15:16:38,080 INFO L226 Difference]: Without dead ends: 1480 [2021-12-14 15:16:38,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:38,083 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 51 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:38,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 281 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-12-14 15:16:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1462. [2021-12-14 15:16:38,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 1.4243668720054756) internal successors, (2081), 1461 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 2081 transitions. [2021-12-14 15:16:38,405 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 2081 transitions. Word has length 74 [2021-12-14 15:16:38,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:38,405 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 2081 transitions. [2021-12-14 15:16:38,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 2081 transitions. [2021-12-14 15:16:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 15:16:38,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:38,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:38,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-14 15:16:38,407 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:38,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1468955342, now seen corresponding path program 1 times [2021-12-14 15:16:38,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:38,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333430871] [2021-12-14 15:16:38,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:38,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:38,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:38,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333430871] [2021-12-14 15:16:38,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333430871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:38,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:38,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:16:38,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311626416] [2021-12-14 15:16:38,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:38,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:16:38,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:38,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:16:38,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:16:38,453 INFO L87 Difference]: Start difference. First operand 1462 states and 2081 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:39,024 INFO L93 Difference]: Finished difference Result 2676 states and 3839 transitions. [2021-12-14 15:16:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:16:39,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-14 15:16:39,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:39,031 INFO L225 Difference]: With dead ends: 2676 [2021-12-14 15:16:39,031 INFO L226 Difference]: Without dead ends: 2266 [2021-12-14 15:16:39,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:16:39,032 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 288 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:39,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 473 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2021-12-14 15:16:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 1852. [2021-12-14 15:16:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 1.4278768233387358) internal successors, (2643), 1851 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:39,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2643 transitions. [2021-12-14 15:16:39,442 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2643 transitions. Word has length 74 [2021-12-14 15:16:39,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:39,443 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 2643 transitions. [2021-12-14 15:16:39,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2643 transitions. [2021-12-14 15:16:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 15:16:39,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:39,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:39,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-14 15:16:39,444 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:39,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1631844587, now seen corresponding path program 1 times [2021-12-14 15:16:39,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:39,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866280685] [2021-12-14 15:16:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:39,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:39,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866280685] [2021-12-14 15:16:39,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866280685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:39,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:39,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:16:39,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502787897] [2021-12-14 15:16:39,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:39,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:16:39,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:39,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:16:39,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:39,477 INFO L87 Difference]: Start difference. First operand 1852 states and 2643 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:40,303 INFO L93 Difference]: Finished difference Result 5188 states and 7385 transitions. [2021-12-14 15:16:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:16:40,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-14 15:16:40,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:40,314 INFO L225 Difference]: With dead ends: 5188 [2021-12-14 15:16:40,315 INFO L226 Difference]: Without dead ends: 3412 [2021-12-14 15:16:40,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:40,317 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 55 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:40,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 258 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:40,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2021-12-14 15:16:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3194. [2021-12-14 15:16:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3193 states have (on average 1.4093329157532102) internal successors, (4500), 3193 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 4500 transitions. [2021-12-14 15:16:41,135 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 4500 transitions. Word has length 74 [2021-12-14 15:16:41,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:41,136 INFO L470 AbstractCegarLoop]: Abstraction has 3194 states and 4500 transitions. [2021-12-14 15:16:41,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 4500 transitions. [2021-12-14 15:16:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-14 15:16:41,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:41,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:41,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-14 15:16:41,137 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash -536068422, now seen corresponding path program 1 times [2021-12-14 15:16:41,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:41,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89156183] [2021-12-14 15:16:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:41,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:41,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:41,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89156183] [2021-12-14 15:16:41,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89156183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:41,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:41,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:16:41,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11840680] [2021-12-14 15:16:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:41,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:16:41,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:16:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:41,186 INFO L87 Difference]: Start difference. First operand 3194 states and 4500 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:42,702 INFO L93 Difference]: Finished difference Result 8998 states and 12578 transitions. [2021-12-14 15:16:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:16:42,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-12-14 15:16:42,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:42,716 INFO L225 Difference]: With dead ends: 8998 [2021-12-14 15:16:42,716 INFO L226 Difference]: Without dead ends: 5880 [2021-12-14 15:16:42,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:42,721 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 45 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:42,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 257 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:42,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2021-12-14 15:16:44,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5446. [2021-12-14 15:16:44,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5446 states, 5445 states have (on average 1.3796143250688706) internal successors, (7512), 5445 states have internal predecessors, (7512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5446 states to 5446 states and 7512 transitions. [2021-12-14 15:16:44,169 INFO L78 Accepts]: Start accepts. Automaton has 5446 states and 7512 transitions. Word has length 75 [2021-12-14 15:16:44,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:44,169 INFO L470 AbstractCegarLoop]: Abstraction has 5446 states and 7512 transitions. [2021-12-14 15:16:44,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:44,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5446 states and 7512 transitions. [2021-12-14 15:16:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 15:16:44,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:44,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:44,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-14 15:16:44,170 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1852091383, now seen corresponding path program 1 times [2021-12-14 15:16:44,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:44,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305870060] [2021-12-14 15:16:44,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:44,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:44,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:44,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305870060] [2021-12-14 15:16:44,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305870060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:44,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:44,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:16:44,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468807560] [2021-12-14 15:16:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:44,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:16:44,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:16:44,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:16:44,232 INFO L87 Difference]: Start difference. First operand 5446 states and 7512 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:46,459 INFO L93 Difference]: Finished difference Result 8560 states and 11714 transitions. [2021-12-14 15:16:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 15:16:46,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-14 15:16:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:46,481 INFO L225 Difference]: With dead ends: 8560 [2021-12-14 15:16:46,481 INFO L226 Difference]: Without dead ends: 8558 [2021-12-14 15:16:46,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:16:46,483 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 204 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:46,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 665 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8558 states. [2021-12-14 15:16:47,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8558 to 5542. [2021-12-14 15:16:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5541 states have (on average 1.3658184443241292) internal successors, (7568), 5541 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 7568 transitions. [2021-12-14 15:16:47,777 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 7568 transitions. Word has length 76 [2021-12-14 15:16:47,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:47,777 INFO L470 AbstractCegarLoop]: Abstraction has 5542 states and 7568 transitions. [2021-12-14 15:16:47,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:47,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 7568 transitions. [2021-12-14 15:16:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-14 15:16:47,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:47,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:47,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-14 15:16:47,778 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:47,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -966335138, now seen corresponding path program 1 times [2021-12-14 15:16:47,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:47,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975783682] [2021-12-14 15:16:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:47,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:47,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:47,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975783682] [2021-12-14 15:16:47,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975783682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:16:47,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:16:47,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:16:47,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359664640] [2021-12-14 15:16:47,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:16:47,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:16:47,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:47,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:16:47,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:47,819 INFO L87 Difference]: Start difference. First operand 5542 states and 7568 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) [2021-12-14 15:16:49,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:16:49,700 INFO L93 Difference]: Finished difference Result 12850 states and 17506 transitions. [2021-12-14 15:16:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:16:49,701 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 [2021-12-14 15:16:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:16:49,713 INFO L225 Difference]: With dead ends: 12850 [2021-12-14 15:16:49,713 INFO L226 Difference]: Without dead ends: 7384 [2021-12-14 15:16:49,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:16:49,719 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 59 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:16:49,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 259 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:16:49,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7384 states. [2021-12-14 15:16:51,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7384 to 6774. [2021-12-14 15:16:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6774 states, 6773 states have (on average 1.3335301934150303) internal successors, (9032), 6773 states have internal predecessors, (9032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:16:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6774 states to 6774 states and 9032 transitions. [2021-12-14 15:16:51,384 INFO L78 Accepts]: Start accepts. Automaton has 6774 states and 9032 transitions. Word has length 77 [2021-12-14 15:16:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:16:51,385 INFO L470 AbstractCegarLoop]: Abstraction has 6774 states and 9032 transitions. [2021-12-14 15:16:51,385 INFO L471 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) [2021-12-14 15:16:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 6774 states and 9032 transitions. [2021-12-14 15:16:51,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-14 15:16:51,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:16:51,388 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:16:51,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-14 15:16:51,388 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:16:51,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:16:51,389 INFO L85 PathProgramCache]: Analyzing trace with hash 914913403, now seen corresponding path program 1 times [2021-12-14 15:16:51,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:16:51,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222293803] [2021-12-14 15:16:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:51,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:16:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:51,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:16:51,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222293803] [2021-12-14 15:16:51,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222293803] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 15:16:51,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162363632] [2021-12-14 15:16:51,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:16:51,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 15:16:51,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:16:51,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 15:16:51,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 15:16:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:16:51,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 15:16:51,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 15:16:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:52,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 15:16:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:16:53,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162363632] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 15:16:53,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 15:16:53,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-12-14 15:16:53,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977749918] [2021-12-14 15:16:53,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 15:16:53,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-14 15:16:53,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:16:53,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-14 15:16:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-12-14 15:16:53,906 INFO L87 Difference]: Start difference. First operand 6774 states and 9032 transitions. Second operand has 27 states, 27 states have (on average 8.703703703703704) internal successors, (235), 26 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)