./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash da0a9170cb1355df936e020ec31cd269723d3c83f610103689e93f9c7ac8eb3a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:56:08,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:56:08,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:56:08,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:56:08,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:56:08,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:56:08,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:56:08,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:56:08,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:56:08,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:56:08,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:56:08,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:56:08,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:56:08,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:56:08,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:56:08,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:56:08,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:56:08,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:56:08,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:56:08,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:56:08,924 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:56:08,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:56:08,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:56:08,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:56:08,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:56:08,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:56:08,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:56:08,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:56:08,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:56:08,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:56:08,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:56:08,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:56:08,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:56:08,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:56:08,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:56:08,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:56:08,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:56:08,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:56:08,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:56:08,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:56:08,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:56:08,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:56:08,941 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:56:08,964 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:56:08,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:56:08,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:56:08,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:56:08,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:56:08,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:56:08,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:56:08,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:56:08,966 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:56:08,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:56:08,967 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:56:08,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:56:08,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:56:08,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:56:08,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:56:08,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:56:08,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:56:08,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:56:08,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:56:08,968 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:56:08,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:56:08,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:56:08,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:56:08,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:56:08,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:56:08,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:56:08,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:56:08,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:56:08,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:56:08,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:56:08,970 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:56:08,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:56:08,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:56:08,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da0a9170cb1355df936e020ec31cd269723d3c83f610103689e93f9c7ac8eb3a [2022-07-12 06:56:09,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:56:09,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:56:09,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:56:09,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:56:09,191 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:56:09,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-12 06:56:09,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11429d104/fc6238b432af401590cc9efa71e21f19/FLAG654563626 [2022-07-12 06:56:09,668 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:56:09,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-12 06:56:09,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11429d104/fc6238b432af401590cc9efa71e21f19/FLAG654563626 [2022-07-12 06:56:10,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11429d104/fc6238b432af401590cc9efa71e21f19 [2022-07-12 06:56:10,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:56:10,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:56:10,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:56:10,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:56:10,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:56:10,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393b217c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10, skipping insertion in model container [2022-07-12 06:56:10,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:56:10,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:56:10,333 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2022-07-12 06:56:10,345 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2022-07-12 06:56:10,352 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2022-07-12 06:56:10,359 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2022-07-12 06:56:10,399 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2022-07-12 06:56:10,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:56:10,442 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:56:10,502 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14146,14159] [2022-07-12 06:56:10,506 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14793,14806] [2022-07-12 06:56:10,511 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_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16069,16082] [2022-07-12 06:56:10,516 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17045,17058] [2022-07-12 06:56:10,542 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25516,25529] [2022-07-12 06:56:10,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:56:10,576 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:56:10,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10 WrapperNode [2022-07-12 06:56:10,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:56:10,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:56:10,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:56:10,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:56:10,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,651 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1565 [2022-07-12 06:56:10,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:56:10,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:56:10,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:56:10,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:56:10,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:56:10,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:56:10,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:56:10,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:56:10,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (1/1) ... [2022-07-12 06:56:10,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:56:10,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:56:10,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:56:10,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:56:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:56:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:56:10,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:56:10,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:56:10,943 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:56:10,944 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:56:11,709 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:56:11,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:56:11,735 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 06:56:11,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:56:11 BoogieIcfgContainer [2022-07-12 06:56:11,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:56:11,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:56:11,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:56:11,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:56:11,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:56:10" (1/3) ... [2022-07-12 06:56:11,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89d143e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:56:11, skipping insertion in model container [2022-07-12 06:56:11,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:56:10" (2/3) ... [2022-07-12 06:56:11,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89d143e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:56:11, skipping insertion in model container [2022-07-12 06:56:11,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:56:11" (3/3) ... [2022-07-12 06:56:11,743 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-12 06:56:11,777 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:56:11,777 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-07-12 06:56:11,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:56:11,873 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78acc093, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@789bc8ea [2022-07-12 06:56:11,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 06:56:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 388 states, 382 states have (on average 1.824607329842932) internal successors, (697), 387 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 06:56:11,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:11,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:11,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:11,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1860790591, now seen corresponding path program 1 times [2022-07-12 06:56:11,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:11,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048975570] [2022-07-12 06:56:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:11,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:12,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:12,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048975570] [2022-07-12 06:56:12,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048975570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:12,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:12,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:56:12,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930154955] [2022-07-12 06:56:12,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:12,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:56:12,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:12,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:56:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:12,277 INFO L87 Difference]: Start difference. First operand has 388 states, 382 states have (on average 1.824607329842932) internal successors, (697), 387 states have internal predecessors, (697), 0 states have call successors, (0), 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 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:12,496 INFO L93 Difference]: Finished difference Result 717 states and 1276 transitions. [2022-07-12 06:56:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:56:12,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2022-07-12 06:56:12,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:12,514 INFO L225 Difference]: With dead ends: 717 [2022-07-12 06:56:12,514 INFO L226 Difference]: Without dead ends: 589 [2022-07-12 06:56:12,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:12,521 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 424 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:12,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1246 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:56:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-07-12 06:56:12,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 587. [2022-07-12 06:56:12,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 582 states have (on average 1.4793814432989691) internal successors, (861), 586 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 861 transitions. [2022-07-12 06:56:12,583 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 861 transitions. Word has length 141 [2022-07-12 06:56:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:12,583 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 861 transitions. [2022-07-12 06:56:12,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 861 transitions. [2022-07-12 06:56:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 06:56:12,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:12,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:12,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:56:12,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1860359615, now seen corresponding path program 1 times [2022-07-12 06:56:12,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:12,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760142857] [2022-07-12 06:56:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:12,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:12,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:12,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760142857] [2022-07-12 06:56:12,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760142857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:12,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:12,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:56:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907914582] [2022-07-12 06:56:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:12,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:56:12,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:56:12,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:56:12,816 INFO L87 Difference]: Start difference. First operand 587 states and 861 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:12,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:12,942 INFO L93 Difference]: Finished difference Result 1719 states and 2514 transitions. [2022-07-12 06:56:12,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:12,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2022-07-12 06:56:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:12,946 INFO L225 Difference]: With dead ends: 1719 [2022-07-12 06:56:12,946 INFO L226 Difference]: Without dead ends: 1141 [2022-07-12 06:56:12,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:12,951 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 1099 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:12,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1469 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:12,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2022-07-12 06:56:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1103. [2022-07-12 06:56:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1098 states have (on average 1.4681238615664844) internal successors, (1612), 1102 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1612 transitions. [2022-07-12 06:56:13,024 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1612 transitions. Word has length 141 [2022-07-12 06:56:13,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:13,025 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1612 transitions. [2022-07-12 06:56:13,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:13,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1612 transitions. [2022-07-12 06:56:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 06:56:13,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:13,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:13,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:56:13,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1839649003, now seen corresponding path program 1 times [2022-07-12 06:56:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:13,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011726041] [2022-07-12 06:56:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:13,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:13,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011726041] [2022-07-12 06:56:13,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011726041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:13,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:13,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:56:13,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603964599] [2022-07-12 06:56:13,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:13,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:56:13,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:56:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:13,072 INFO L87 Difference]: Start difference. First operand 1103 states and 1612 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:13,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:13,173 INFO L93 Difference]: Finished difference Result 3271 states and 4774 transitions. [2022-07-12 06:56:13,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:56:13,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-07-12 06:56:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:13,180 INFO L225 Difference]: With dead ends: 3271 [2022-07-12 06:56:13,180 INFO L226 Difference]: Without dead ends: 2196 [2022-07-12 06:56:13,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:13,182 INFO L413 NwaCegarLoop]: 1088 mSDtfsCounter, 540 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:13,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1630 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-07-12 06:56:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1105. [2022-07-12 06:56:13,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1100 states have (on average 1.4672727272727273) internal successors, (1614), 1104 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:13,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1614 transitions. [2022-07-12 06:56:13,241 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1614 transitions. Word has length 142 [2022-07-12 06:56:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:13,241 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1614 transitions. [2022-07-12 06:56:13,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:13,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1614 transitions. [2022-07-12 06:56:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-12 06:56:13,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:13,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:56:13,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:13,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash 734467803, now seen corresponding path program 1 times [2022-07-12 06:56:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:13,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858667148] [2022-07-12 06:56:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:13,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:13,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858667148] [2022-07-12 06:56:13,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858667148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:13,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:13,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:56:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946794528] [2022-07-12 06:56:13,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:13,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:56:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:56:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:13,375 INFO L87 Difference]: Start difference. First operand 1105 states and 1614 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:13,523 INFO L93 Difference]: Finished difference Result 3075 states and 4501 transitions. [2022-07-12 06:56:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:56:13,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-07-12 06:56:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:13,530 INFO L225 Difference]: With dead ends: 3075 [2022-07-12 06:56:13,530 INFO L226 Difference]: Without dead ends: 2146 [2022-07-12 06:56:13,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:13,537 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 478 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:13,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1520 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2022-07-12 06:56:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2108. [2022-07-12 06:56:13,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2103 states have (on average 1.4550641940085591) internal successors, (3060), 2107 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3060 transitions. [2022-07-12 06:56:13,654 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3060 transitions. Word has length 143 [2022-07-12 06:56:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:13,655 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 3060 transitions. [2022-07-12 06:56:13,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:13,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3060 transitions. [2022-07-12 06:56:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-12 06:56:13,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:13,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:13,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:56:13,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:13,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1947336930, now seen corresponding path program 1 times [2022-07-12 06:56:13,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:13,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070116059] [2022-07-12 06:56:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:13,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:13,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:13,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070116059] [2022-07-12 06:56:13,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070116059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:13,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:13,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:56:13,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944468900] [2022-07-12 06:56:13,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:13,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:56:13,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:56:13,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:13,782 INFO L87 Difference]: Start difference. First operand 2108 states and 3060 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:14,048 INFO L93 Difference]: Finished difference Result 6002 states and 8697 transitions. [2022-07-12 06:56:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:14,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-07-12 06:56:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:14,060 INFO L225 Difference]: With dead ends: 6002 [2022-07-12 06:56:14,060 INFO L226 Difference]: Without dead ends: 3908 [2022-07-12 06:56:14,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:14,066 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1306 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:14,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 1769 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:56:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2022-07-12 06:56:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3878. [2022-07-12 06:56:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3873 states have (on average 1.4366124451329718) internal successors, (5564), 3877 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5564 transitions. [2022-07-12 06:56:14,291 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5564 transitions. Word has length 143 [2022-07-12 06:56:14,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:14,292 INFO L495 AbstractCegarLoop]: Abstraction has 3878 states and 5564 transitions. [2022-07-12 06:56:14,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:14,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5564 transitions. [2022-07-12 06:56:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-12 06:56:14,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:14,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:14,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:56:14,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:14,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1237819550, now seen corresponding path program 1 times [2022-07-12 06:56:14,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:14,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642891204] [2022-07-12 06:56:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:14,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:14,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:14,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642891204] [2022-07-12 06:56:14,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642891204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:14,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:14,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:56:14,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740513709] [2022-07-12 06:56:14,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:14,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:56:14,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:14,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:56:14,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:56:14,379 INFO L87 Difference]: Start difference. First operand 3878 states and 5564 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:14,880 INFO L93 Difference]: Finished difference Result 11345 states and 16231 transitions. [2022-07-12 06:56:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:14,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-07-12 06:56:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:14,901 INFO L225 Difference]: With dead ends: 11345 [2022-07-12 06:56:14,902 INFO L226 Difference]: Without dead ends: 7523 [2022-07-12 06:56:14,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:14,907 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 1085 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:14,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1460 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:14,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7523 states. [2022-07-12 06:56:15,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7523 to 7479. [2022-07-12 06:56:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7479 states, 7474 states have (on average 1.420925876371421) internal successors, (10620), 7478 states have internal predecessors, (10620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:15,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 10620 transitions. [2022-07-12 06:56:15,411 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 10620 transitions. Word has length 143 [2022-07-12 06:56:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:15,411 INFO L495 AbstractCegarLoop]: Abstraction has 7479 states and 10620 transitions. [2022-07-12 06:56:15,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 10620 transitions. [2022-07-12 06:56:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 06:56:15,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:15,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:15,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:56:15,420 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1470261354, now seen corresponding path program 1 times [2022-07-12 06:56:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:15,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755256515] [2022-07-12 06:56:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:15,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:15,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755256515] [2022-07-12 06:56:15,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755256515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:15,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:15,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:56:15,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574511357] [2022-07-12 06:56:15,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:15,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:56:15,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:15,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:56:15,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:15,457 INFO L87 Difference]: Start difference. First operand 7479 states and 10620 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:16,264 INFO L93 Difference]: Finished difference Result 22285 states and 31627 transitions. [2022-07-12 06:56:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:56:16,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-07-12 06:56:16,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:16,318 INFO L225 Difference]: With dead ends: 22285 [2022-07-12 06:56:16,318 INFO L226 Difference]: Without dead ends: 14897 [2022-07-12 06:56:16,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:16,327 INFO L413 NwaCegarLoop]: 1074 mSDtfsCounter, 526 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:16,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 1616 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14897 states. [2022-07-12 06:56:16,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14897 to 7489. [2022-07-12 06:56:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7489 states, 7484 states have (on average 1.4203634420096205) internal successors, (10630), 7488 states have internal predecessors, (10630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7489 states to 7489 states and 10630 transitions. [2022-07-12 06:56:16,818 INFO L78 Accepts]: Start accepts. Automaton has 7489 states and 10630 transitions. Word has length 144 [2022-07-12 06:56:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:16,818 INFO L495 AbstractCegarLoop]: Abstraction has 7489 states and 10630 transitions. [2022-07-12 06:56:16,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 7489 states and 10630 transitions. [2022-07-12 06:56:16,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 06:56:16,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:16,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:16,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:56:16,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:16,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:16,827 INFO L85 PathProgramCache]: Analyzing trace with hash -671861994, now seen corresponding path program 1 times [2022-07-12 06:56:16,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:16,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299162733] [2022-07-12 06:56:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:16,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:16,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:16,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299162733] [2022-07-12 06:56:16,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299162733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:16,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:16,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:56:16,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926281953] [2022-07-12 06:56:16,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:16,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:56:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:56:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:16,866 INFO L87 Difference]: Start difference. First operand 7489 states and 10630 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:17,689 INFO L93 Difference]: Finished difference Result 21181 states and 30129 transitions. [2022-07-12 06:56:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:56:17,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-07-12 06:56:17,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:17,715 INFO L225 Difference]: With dead ends: 21181 [2022-07-12 06:56:17,715 INFO L226 Difference]: Without dead ends: 14533 [2022-07-12 06:56:17,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:17,733 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 471 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:17,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1541 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14533 states. [2022-07-12 06:56:18,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14533 to 14489. [2022-07-12 06:56:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14489 states, 14484 states have (on average 1.4052057442695387) internal successors, (20353), 14488 states have internal predecessors, (20353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14489 states to 14489 states and 20353 transitions. [2022-07-12 06:56:18,549 INFO L78 Accepts]: Start accepts. Automaton has 14489 states and 20353 transitions. Word has length 145 [2022-07-12 06:56:18,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:18,549 INFO L495 AbstractCegarLoop]: Abstraction has 14489 states and 20353 transitions. [2022-07-12 06:56:18,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:18,550 INFO L276 IsEmpty]: Start isEmpty. Operand 14489 states and 20353 transitions. [2022-07-12 06:56:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 06:56:18,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:18,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:18,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:56:18,564 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash -720915239, now seen corresponding path program 1 times [2022-07-12 06:56:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:18,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378918745] [2022-07-12 06:56:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:18,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:18,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:18,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378918745] [2022-07-12 06:56:18,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378918745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:18,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:18,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:56:18,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059297101] [2022-07-12 06:56:18,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:18,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:56:18,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:56:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:18,631 INFO L87 Difference]: Start difference. First operand 14489 states and 20353 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:19,957 INFO L93 Difference]: Finished difference Result 38834 states and 54380 transitions. [2022-07-12 06:56:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:19,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-07-12 06:56:19,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:19,992 INFO L225 Difference]: With dead ends: 38834 [2022-07-12 06:56:19,993 INFO L226 Difference]: Without dead ends: 24423 [2022-07-12 06:56:20,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:20,008 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 1599 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:20,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 1424 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24423 states. [2022-07-12 06:56:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24423 to 24397. [2022-07-12 06:56:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24397 states, 24392 states have (on average 1.3795096753033782) internal successors, (33649), 24396 states have internal predecessors, (33649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24397 states to 24397 states and 33649 transitions. [2022-07-12 06:56:21,745 INFO L78 Accepts]: Start accepts. Automaton has 24397 states and 33649 transitions. Word has length 145 [2022-07-12 06:56:21,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:21,746 INFO L495 AbstractCegarLoop]: Abstraction has 24397 states and 33649 transitions. [2022-07-12 06:56:21,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 24397 states and 33649 transitions. [2022-07-12 06:56:21,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 06:56:21,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:21,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:21,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:56:21,769 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash 909534973, now seen corresponding path program 1 times [2022-07-12 06:56:21,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:21,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681529] [2022-07-12 06:56:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:21,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:21,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:21,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681529] [2022-07-12 06:56:21,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:21,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:21,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:56:21,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492356516] [2022-07-12 06:56:21,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:21,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:56:21,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:56:21,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:56:21,858 INFO L87 Difference]: Start difference. First operand 24397 states and 33649 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:23,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:23,450 INFO L93 Difference]: Finished difference Result 49325 states and 67865 transitions. [2022-07-12 06:56:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:23,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-07-12 06:56:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:23,498 INFO L225 Difference]: With dead ends: 49325 [2022-07-12 06:56:23,499 INFO L226 Difference]: Without dead ends: 25322 [2022-07-12 06:56:23,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:23,527 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 1074 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:23,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1444 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25322 states. [2022-07-12 06:56:25,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25322 to 24863. [2022-07-12 06:56:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24863 states, 24858 states have (on average 1.374285944162845) internal successors, (34162), 24862 states have internal predecessors, (34162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24863 states to 24863 states and 34162 transitions. [2022-07-12 06:56:25,273 INFO L78 Accepts]: Start accepts. Automaton has 24863 states and 34162 transitions. Word has length 145 [2022-07-12 06:56:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:25,274 INFO L495 AbstractCegarLoop]: Abstraction has 24863 states and 34162 transitions. [2022-07-12 06:56:25,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 24863 states and 34162 transitions. [2022-07-12 06:56:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 06:56:25,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:25,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:25,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:56:25,304 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash -497015959, now seen corresponding path program 1 times [2022-07-12 06:56:25,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:25,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647048978] [2022-07-12 06:56:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:25,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:25,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:25,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647048978] [2022-07-12 06:56:25,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647048978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:25,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:25,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:56:25,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161671967] [2022-07-12 06:56:25,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:25,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:56:25,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:25,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:56:25,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:25,343 INFO L87 Difference]: Start difference. First operand 24863 states and 34162 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:28,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:28,621 INFO L93 Difference]: Finished difference Result 72633 states and 100090 transitions. [2022-07-12 06:56:28,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:56:28,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-07-12 06:56:28,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:28,708 INFO L225 Difference]: With dead ends: 72633 [2022-07-12 06:56:28,708 INFO L226 Difference]: Without dead ends: 49312 [2022-07-12 06:56:28,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:28,747 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 512 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:28,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1170 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:28,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49312 states. [2022-07-12 06:56:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49312 to 24903. [2022-07-12 06:56:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24903 states, 24898 states have (on average 1.37368463330388) internal successors, (34202), 24902 states have internal predecessors, (34202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:30,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24903 states to 24903 states and 34202 transitions. [2022-07-12 06:56:30,861 INFO L78 Accepts]: Start accepts. Automaton has 24903 states and 34202 transitions. Word has length 146 [2022-07-12 06:56:30,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:30,863 INFO L495 AbstractCegarLoop]: Abstraction has 24903 states and 34202 transitions. [2022-07-12 06:56:30,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:30,863 INFO L276 IsEmpty]: Start isEmpty. Operand 24903 states and 34202 transitions. [2022-07-12 06:56:30,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 06:56:30,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:30,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:30,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:56:30,889 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:30,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:30,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1442584356, now seen corresponding path program 1 times [2022-07-12 06:56:30,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:30,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103784185] [2022-07-12 06:56:30,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:30,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:30,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:30,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103784185] [2022-07-12 06:56:30,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103784185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:30,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:30,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:56:30,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082684739] [2022-07-12 06:56:30,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:30,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:56:30,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:30,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:56:30,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:56:30,969 INFO L87 Difference]: Start difference. First operand 24903 states and 34202 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:32,079 INFO L93 Difference]: Finished difference Result 40404 states and 55585 transitions. [2022-07-12 06:56:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:32,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2022-07-12 06:56:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:32,106 INFO L225 Difference]: With dead ends: 40404 [2022-07-12 06:56:32,106 INFO L226 Difference]: Without dead ends: 16484 [2022-07-12 06:56:32,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:32,129 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 65 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:32,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1685 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:32,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16484 states. [2022-07-12 06:56:33,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16484 to 16484. [2022-07-12 06:56:33,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16484 states, 16479 states have (on average 1.3683475939073972) internal successors, (22549), 16483 states have internal predecessors, (22549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16484 states to 16484 states and 22549 transitions. [2022-07-12 06:56:33,314 INFO L78 Accepts]: Start accepts. Automaton has 16484 states and 22549 transitions. Word has length 147 [2022-07-12 06:56:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:33,314 INFO L495 AbstractCegarLoop]: Abstraction has 16484 states and 22549 transitions. [2022-07-12 06:56:33,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 16484 states and 22549 transitions. [2022-07-12 06:56:33,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 06:56:33,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:33,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:33,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:56:33,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:33,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:33,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1557306087, now seen corresponding path program 1 times [2022-07-12 06:56:33,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:33,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768162394] [2022-07-12 06:56:33,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:33,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:33,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:33,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768162394] [2022-07-12 06:56:33,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768162394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:33,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:33,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:56:33,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777363228] [2022-07-12 06:56:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:33,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:56:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:33,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:56:33,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:56:33,406 INFO L87 Difference]: Start difference. First operand 16484 states and 22549 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:35,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:35,291 INFO L93 Difference]: Finished difference Result 32605 states and 46325 transitions. [2022-07-12 06:56:35,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:35,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2022-07-12 06:56:35,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:35,328 INFO L225 Difference]: With dead ends: 32605 [2022-07-12 06:56:35,328 INFO L226 Difference]: Without dead ends: 26686 [2022-07-12 06:56:35,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:56:35,365 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 970 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:35,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 945 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:56:35,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26686 states. [2022-07-12 06:56:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26686 to 26684. [2022-07-12 06:56:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26684 states, 26679 states have (on average 1.3784999437760035) internal successors, (36777), 26683 states have internal predecessors, (36777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26684 states to 26684 states and 36777 transitions. [2022-07-12 06:56:37,834 INFO L78 Accepts]: Start accepts. Automaton has 26684 states and 36777 transitions. Word has length 155 [2022-07-12 06:56:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:37,834 INFO L495 AbstractCegarLoop]: Abstraction has 26684 states and 36777 transitions. [2022-07-12 06:56:37,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:37,834 INFO L276 IsEmpty]: Start isEmpty. Operand 26684 states and 36777 transitions. [2022-07-12 06:56:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 06:56:37,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:37,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:37,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:56:37,880 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:37,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:37,881 INFO L85 PathProgramCache]: Analyzing trace with hash 296784743, now seen corresponding path program 1 times [2022-07-12 06:56:37,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:37,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529107120] [2022-07-12 06:56:37,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:37,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:37,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:37,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529107120] [2022-07-12 06:56:37,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529107120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:37,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:37,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:56:37,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49935233] [2022-07-12 06:56:37,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:37,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:56:37,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:56:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:56:37,980 INFO L87 Difference]: Start difference. First operand 26684 states and 36777 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:39,783 INFO L93 Difference]: Finished difference Result 44294 states and 61254 transitions. [2022-07-12 06:56:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:39,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2022-07-12 06:56:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:39,813 INFO L225 Difference]: With dead ends: 44294 [2022-07-12 06:56:39,814 INFO L226 Difference]: Without dead ends: 24301 [2022-07-12 06:56:39,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:39,827 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 53 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:39,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1670 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:39,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24301 states. [2022-07-12 06:56:41,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24301 to 24301. [2022-07-12 06:56:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24301 states, 24296 states have (on average 1.3827790582811985) internal successors, (33596), 24300 states have internal predecessors, (33596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:41,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24301 states to 24301 states and 33596 transitions. [2022-07-12 06:56:41,633 INFO L78 Accepts]: Start accepts. Automaton has 24301 states and 33596 transitions. Word has length 155 [2022-07-12 06:56:41,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:41,634 INFO L495 AbstractCegarLoop]: Abstraction has 24301 states and 33596 transitions. [2022-07-12 06:56:41,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:41,634 INFO L276 IsEmpty]: Start isEmpty. Operand 24301 states and 33596 transitions. [2022-07-12 06:56:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 06:56:41,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:41,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:41,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:56:41,650 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:41,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1163062228, now seen corresponding path program 1 times [2022-07-12 06:56:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:41,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761548484] [2022-07-12 06:56:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:41,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:41,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:41,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761548484] [2022-07-12 06:56:41,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761548484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:41,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:41,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:56:41,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322929727] [2022-07-12 06:56:41,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:41,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:56:41,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:56:41,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:41,680 INFO L87 Difference]: Start difference. First operand 24301 states and 33596 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:45,338 INFO L93 Difference]: Finished difference Result 68381 states and 95160 transitions. [2022-07-12 06:56:45,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:56:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-07-12 06:56:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:45,406 INFO L225 Difference]: With dead ends: 68381 [2022-07-12 06:56:45,406 INFO L226 Difference]: Without dead ends: 47183 [2022-07-12 06:56:45,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:56:45,445 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 457 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:45,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 875 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:56:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47183 states. [2022-07-12 06:56:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47183 to 47129. [2022-07-12 06:56:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47129 states, 47124 states have (on average 1.3745861981156098) internal successors, (64776), 47128 states have internal predecessors, (64776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47129 states to 47129 states and 64776 transitions. [2022-07-12 06:56:49,408 INFO L78 Accepts]: Start accepts. Automaton has 47129 states and 64776 transitions. Word has length 161 [2022-07-12 06:56:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:49,408 INFO L495 AbstractCegarLoop]: Abstraction has 47129 states and 64776 transitions. [2022-07-12 06:56:49,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 47129 states and 64776 transitions. [2022-07-12 06:56:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 06:56:49,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:49,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:49,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:56:49,500 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:49,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1593816879, now seen corresponding path program 1 times [2022-07-12 06:56:49,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:49,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455839763] [2022-07-12 06:56:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:49,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:49,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455839763] [2022-07-12 06:56:49,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455839763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:49,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:49,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:56:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084278403] [2022-07-12 06:56:49,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:49,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:56:49,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:56:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:56:49,699 INFO L87 Difference]: Start difference. First operand 47129 states and 64776 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:53,156 INFO L93 Difference]: Finished difference Result 61353 states and 87171 transitions. [2022-07-12 06:56:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:53,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-07-12 06:56:53,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:53,210 INFO L225 Difference]: With dead ends: 61353 [2022-07-12 06:56:53,210 INFO L226 Difference]: Without dead ends: 42651 [2022-07-12 06:56:53,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:56:53,236 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 820 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:53,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 3194 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:56:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42651 states. [2022-07-12 06:56:56,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42651 to 42649. [2022-07-12 06:56:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42649 states, 42644 states have (on average 1.3445033298940061) internal successors, (57335), 42648 states have internal predecessors, (57335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:56,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42649 states to 42649 states and 57335 transitions. [2022-07-12 06:56:56,847 INFO L78 Accepts]: Start accepts. Automaton has 42649 states and 57335 transitions. Word has length 161 [2022-07-12 06:56:56,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:56:56,847 INFO L495 AbstractCegarLoop]: Abstraction has 42649 states and 57335 transitions. [2022-07-12 06:56:56,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:56,847 INFO L276 IsEmpty]: Start isEmpty. Operand 42649 states and 57335 transitions. [2022-07-12 06:56:56,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-12 06:56:56,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:56:56,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:56:56,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:56:56,887 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:56:56,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:56:56,888 INFO L85 PathProgramCache]: Analyzing trace with hash 554982836, now seen corresponding path program 1 times [2022-07-12 06:56:56,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:56:56,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289757086] [2022-07-12 06:56:56,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:56:56,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:56:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:56:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:56:56,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:56:56,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289757086] [2022-07-12 06:56:56,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289757086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:56:56,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:56:56,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:56:56,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749673418] [2022-07-12 06:56:56,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:56:56,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:56:56,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:56:56,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:56:56,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:56:56,953 INFO L87 Difference]: Start difference. First operand 42649 states and 57335 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:56:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:56:59,415 INFO L93 Difference]: Finished difference Result 71323 states and 95769 transitions. [2022-07-12 06:56:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:56:59,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-07-12 06:56:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:56:59,455 INFO L225 Difference]: With dead ends: 71323 [2022-07-12 06:56:59,455 INFO L226 Difference]: Without dead ends: 28744 [2022-07-12 06:56:59,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:56:59,478 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 43 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:56:59,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1654 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:56:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28744 states. [2022-07-12 06:57:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28744 to 28744. [2022-07-12 06:57:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28744 states, 28739 states have (on average 1.3403389122794809) internal successors, (38520), 28743 states have internal predecessors, (38520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:01,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28744 states to 28744 states and 38520 transitions. [2022-07-12 06:57:01,968 INFO L78 Accepts]: Start accepts. Automaton has 28744 states and 38520 transitions. Word has length 161 [2022-07-12 06:57:01,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:01,969 INFO L495 AbstractCegarLoop]: Abstraction has 28744 states and 38520 transitions. [2022-07-12 06:57:01,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:01,969 INFO L276 IsEmpty]: Start isEmpty. Operand 28744 states and 38520 transitions. [2022-07-12 06:57:01,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 06:57:01,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:01,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:57:01,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:57:01,988 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:57:01,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:01,989 INFO L85 PathProgramCache]: Analyzing trace with hash 414006733, now seen corresponding path program 1 times [2022-07-12 06:57:01,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:01,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239280850] [2022-07-12 06:57:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:01,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:02,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:02,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239280850] [2022-07-12 06:57:02,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239280850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:02,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:02,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:57:02,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606845826] [2022-07-12 06:57:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:02,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:57:02,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:57:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:57:02,033 INFO L87 Difference]: Start difference. First operand 28744 states and 38520 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:04,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:04,712 INFO L93 Difference]: Finished difference Result 56421 states and 75788 transitions. [2022-07-12 06:57:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:57:04,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-07-12 06:57:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:04,748 INFO L225 Difference]: With dead ends: 56421 [2022-07-12 06:57:04,749 INFO L226 Difference]: Without dead ends: 28744 [2022-07-12 06:57:04,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:57:04,770 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1436 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:04,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 492 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:57:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28744 states. [2022-07-12 06:57:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28744 to 28744. [2022-07-12 06:57:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28744 states, 28739 states have (on average 1.3234280942273566) internal successors, (38034), 28743 states have internal predecessors, (38034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28744 states to 28744 states and 38034 transitions. [2022-07-12 06:57:07,425 INFO L78 Accepts]: Start accepts. Automaton has 28744 states and 38034 transitions. Word has length 169 [2022-07-12 06:57:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:07,425 INFO L495 AbstractCegarLoop]: Abstraction has 28744 states and 38034 transitions. [2022-07-12 06:57:07,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:07,425 INFO L276 IsEmpty]: Start isEmpty. Operand 28744 states and 38034 transitions. [2022-07-12 06:57:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 06:57:07,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:07,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:57:07,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:57:07,445 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:57:07,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:07,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1444044968, now seen corresponding path program 1 times [2022-07-12 06:57:07,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:07,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696715307] [2022-07-12 06:57:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:07,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:07,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:07,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696715307] [2022-07-12 06:57:07,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696715307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:07,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:07,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:57:07,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036489914] [2022-07-12 06:57:07,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:07,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:57:07,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:07,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:57:07,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:57:07,505 INFO L87 Difference]: Start difference. First operand 28744 states and 38034 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:11,207 INFO L93 Difference]: Finished difference Result 52662 states and 71235 transitions. [2022-07-12 06:57:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:57:11,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-07-12 06:57:11,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:11,271 INFO L225 Difference]: With dead ends: 52662 [2022-07-12 06:57:11,271 INFO L226 Difference]: Without dead ends: 41231 [2022-07-12 06:57:11,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:57:11,299 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 917 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:11,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 934 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:57:11,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41231 states. [2022-07-12 06:57:15,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41231 to 41229. [2022-07-12 06:57:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41229 states, 41224 states have (on average 1.3041189598292258) internal successors, (53761), 41228 states have internal predecessors, (53761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41229 states to 41229 states and 53761 transitions. [2022-07-12 06:57:15,421 INFO L78 Accepts]: Start accepts. Automaton has 41229 states and 53761 transitions. Word has length 169 [2022-07-12 06:57:15,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:15,422 INFO L495 AbstractCegarLoop]: Abstraction has 41229 states and 53761 transitions. [2022-07-12 06:57:15,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 41229 states and 53761 transitions. [2022-07-12 06:57:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 06:57:15,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:15,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:57:15,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:57:15,467 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:57:15,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1157430736, now seen corresponding path program 1 times [2022-07-12 06:57:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:15,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86686272] [2022-07-12 06:57:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:15,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:15,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:15,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86686272] [2022-07-12 06:57:15,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86686272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:15,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:15,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:57:15,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701286736] [2022-07-12 06:57:15,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:15,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:57:15,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:15,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:57:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:57:15,594 INFO L87 Difference]: Start difference. First operand 41229 states and 53761 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:19,823 INFO L93 Difference]: Finished difference Result 82729 states and 107830 transitions. [2022-07-12 06:57:19,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:57:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-07-12 06:57:19,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:19,892 INFO L225 Difference]: With dead ends: 82729 [2022-07-12 06:57:19,892 INFO L226 Difference]: Without dead ends: 41826 [2022-07-12 06:57:19,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:57:19,942 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1067 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:19,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1377 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:57:19,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41826 states. [2022-07-12 06:57:24,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41826 to 41517. [2022-07-12 06:57:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41517 states, 41512 states have (on average 1.302466756600501) internal successors, (54068), 41516 states have internal predecessors, (54068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41517 states to 41517 states and 54068 transitions. [2022-07-12 06:57:24,480 INFO L78 Accepts]: Start accepts. Automaton has 41517 states and 54068 transitions. Word has length 169 [2022-07-12 06:57:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:24,481 INFO L495 AbstractCegarLoop]: Abstraction has 41517 states and 54068 transitions. [2022-07-12 06:57:24,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 41517 states and 54068 transitions. [2022-07-12 06:57:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 06:57:24,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:24,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:57:24,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 06:57:24,519 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:57:24,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:24,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1236291671, now seen corresponding path program 1 times [2022-07-12 06:57:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:24,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576562391] [2022-07-12 06:57:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:24,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:24,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:24,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576562391] [2022-07-12 06:57:24,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576562391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:24,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:24,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:57:24,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776889037] [2022-07-12 06:57:24,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:24,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:57:24,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:24,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:57:24,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:57:24,600 INFO L87 Difference]: Start difference. First operand 41517 states and 54068 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:28,343 INFO L93 Difference]: Finished difference Result 59364 states and 77260 transitions. [2022-07-12 06:57:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:57:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-07-12 06:57:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:28,397 INFO L225 Difference]: With dead ends: 59364 [2022-07-12 06:57:28,397 INFO L226 Difference]: Without dead ends: 35944 [2022-07-12 06:57:28,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:57:28,419 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 21 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:28,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1612 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:57:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35944 states. [2022-07-12 06:57:32,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35944 to 35944. [2022-07-12 06:57:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35944 states, 35939 states have (on average 1.3019560922674531) internal successors, (46791), 35943 states have internal predecessors, (46791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35944 states to 35944 states and 46791 transitions. [2022-07-12 06:57:32,301 INFO L78 Accepts]: Start accepts. Automaton has 35944 states and 46791 transitions. Word has length 169 [2022-07-12 06:57:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:32,301 INFO L495 AbstractCegarLoop]: Abstraction has 35944 states and 46791 transitions. [2022-07-12 06:57:32,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 35944 states and 46791 transitions. [2022-07-12 06:57:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-12 06:57:32,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:32,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:57:32,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 06:57:32,330 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:57:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash -855174734, now seen corresponding path program 1 times [2022-07-12 06:57:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:32,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997569159] [2022-07-12 06:57:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:33,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:33,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:33,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997569159] [2022-07-12 06:57:33,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997569159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:33,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:33,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-12 06:57:33,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709807148] [2022-07-12 06:57:33,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:33,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 06:57:33,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:33,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 06:57:33,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-07-12 06:57:33,193 INFO L87 Difference]: Start difference. First operand 35944 states and 46791 transitions. Second operand has 23 states, 23 states have (on average 7.434782608695652) internal successors, (171), 23 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:50,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:50,510 INFO L93 Difference]: Finished difference Result 65889 states and 89292 transitions. [2022-07-12 06:57:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 06:57:50,513 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.434782608695652) internal successors, (171), 23 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-12 06:57:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:50,605 INFO L225 Difference]: With dead ends: 65889 [2022-07-12 06:57:50,605 INFO L226 Difference]: Without dead ends: 63297 [2022-07-12 06:57:50,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=904, Invalid=2756, Unknown=0, NotChecked=0, Total=3660 [2022-07-12 06:57:50,623 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 6444 mSDsluCounter, 16056 mSDsCounter, 0 mSdLazyCounter, 5955 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6444 SdHoareTripleChecker+Valid, 17230 SdHoareTripleChecker+Invalid, 6194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 5955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:50,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6444 Valid, 17230 Invalid, 6194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 5955 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 06:57:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63297 states. [2022-07-12 06:57:55,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63297 to 37638. [2022-07-12 06:57:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37638 states, 37633 states have (on average 1.2972656976589696) internal successors, (48820), 37637 states have internal predecessors, (48820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37638 states to 37638 states and 48820 transitions. [2022-07-12 06:57:55,904 INFO L78 Accepts]: Start accepts. Automaton has 37638 states and 48820 transitions. Word has length 171 [2022-07-12 06:57:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:57:55,904 INFO L495 AbstractCegarLoop]: Abstraction has 37638 states and 48820 transitions. [2022-07-12 06:57:55,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.434782608695652) internal successors, (171), 23 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 37638 states and 48820 transitions. [2022-07-12 06:57:55,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-12 06:57:55,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:57:55,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:57:55,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 06:57:55,938 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:57:55,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:57:55,939 INFO L85 PathProgramCache]: Analyzing trace with hash -176781235, now seen corresponding path program 1 times [2022-07-12 06:57:55,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:57:55,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578070259] [2022-07-12 06:57:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:57:55,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:57:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:57:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:57:56,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:57:56,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578070259] [2022-07-12 06:57:56,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578070259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:57:56,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:57:56,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:57:56,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5398055] [2022-07-12 06:57:56,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:57:56,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:57:56,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:57:56,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:57:56,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:57:56,097 INFO L87 Difference]: Start difference. First operand 37638 states and 48820 transitions. Second operand has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:57:59,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:57:59,841 INFO L93 Difference]: Finished difference Result 61669 states and 81072 transitions. [2022-07-12 06:57:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:57:59,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-12 06:57:59,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:57:59,884 INFO L225 Difference]: With dead ends: 61669 [2022-07-12 06:57:59,884 INFO L226 Difference]: Without dead ends: 26230 [2022-07-12 06:57:59,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:57:59,913 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1573 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:57:59,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 712 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:57:59,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26230 states. [2022-07-12 06:58:02,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26230 to 20547. [2022-07-12 06:58:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20547 states, 20542 states have (on average 1.2806932139032228) internal successors, (26308), 20546 states have internal predecessors, (26308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20547 states to 20547 states and 26308 transitions. [2022-07-12 06:58:02,824 INFO L78 Accepts]: Start accepts. Automaton has 20547 states and 26308 transitions. Word has length 171 [2022-07-12 06:58:02,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:58:02,824 INFO L495 AbstractCegarLoop]: Abstraction has 20547 states and 26308 transitions. [2022-07-12 06:58:02,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.1) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand 20547 states and 26308 transitions. [2022-07-12 06:58:02,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-12 06:58:02,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:02,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:02,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 06:58:02,841 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:58:02,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:02,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1795637352, now seen corresponding path program 1 times [2022-07-12 06:58:02,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:02,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407592157] [2022-07-12 06:58:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:03,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:03,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407592157] [2022-07-12 06:58:03,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407592157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:03,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:03,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-12 06:58:03,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174093643] [2022-07-12 06:58:03,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:03,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 06:58:03,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 06:58:03,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2022-07-12 06:58:03,682 INFO L87 Difference]: Start difference. First operand 20547 states and 26308 transitions. Second operand has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:19,016 INFO L93 Difference]: Finished difference Result 40257 states and 54075 transitions. [2022-07-12 06:58:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-12 06:58:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-12 06:58:19,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:58:19,073 INFO L225 Difference]: With dead ends: 40257 [2022-07-12 06:58:19,073 INFO L226 Difference]: Without dead ends: 38945 [2022-07-12 06:58:19,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2022-07-12 06:58:19,086 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 10719 mSDsluCounter, 12189 mSDsCounter, 0 mSdLazyCounter, 4375 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10719 SdHoareTripleChecker+Valid, 13126 SdHoareTripleChecker+Invalid, 4720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 4375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:58:19,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10719 Valid, 13126 Invalid, 4720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 4375 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 06:58:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38945 states. [2022-07-12 06:58:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38945 to 22318. [2022-07-12 06:58:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22318 states, 22313 states have (on average 1.2737417648904226) internal successors, (28421), 22317 states have internal predecessors, (28421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22318 states to 22318 states and 28421 transitions. [2022-07-12 06:58:22,715 INFO L78 Accepts]: Start accepts. Automaton has 22318 states and 28421 transitions. Word has length 171 [2022-07-12 06:58:22,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:58:22,715 INFO L495 AbstractCegarLoop]: Abstraction has 22318 states and 28421 transitions. [2022-07-12 06:58:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 22318 states and 28421 transitions. [2022-07-12 06:58:22,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-12 06:58:22,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:22,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:22,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 06:58:22,732 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:58:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:22,733 INFO L85 PathProgramCache]: Analyzing trace with hash 367317059, now seen corresponding path program 1 times [2022-07-12 06:58:22,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:22,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302282839] [2022-07-12 06:58:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:22,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:22,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:22,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302282839] [2022-07-12 06:58:22,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302282839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:22,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:22,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:58:22,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142037257] [2022-07-12 06:58:22,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:22,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:58:22,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:22,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:58:22,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:58:22,779 INFO L87 Difference]: Start difference. First operand 22318 states and 28421 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:29,129 INFO L93 Difference]: Finished difference Result 52863 states and 68426 transitions. [2022-07-12 06:58:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:58:29,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-12 06:58:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:58:29,177 INFO L225 Difference]: With dead ends: 52863 [2022-07-12 06:58:29,178 INFO L226 Difference]: Without dead ends: 38322 [2022-07-12 06:58:29,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:58:29,195 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 343 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:58:29,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 1018 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:58:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38322 states. [2022-07-12 06:58:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38322 to 37804. [2022-07-12 06:58:35,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37804 states, 37799 states have (on average 1.2763565173681843) internal successors, (48245), 37803 states have internal predecessors, (48245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37804 states to 37804 states and 48245 transitions. [2022-07-12 06:58:35,567 INFO L78 Accepts]: Start accepts. Automaton has 37804 states and 48245 transitions. Word has length 171 [2022-07-12 06:58:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:58:35,567 INFO L495 AbstractCegarLoop]: Abstraction has 37804 states and 48245 transitions. [2022-07-12 06:58:35,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 37804 states and 48245 transitions. [2022-07-12 06:58:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-12 06:58:35,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:58:35,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:58:35,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 06:58:35,601 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:58:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:58:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1127609204, now seen corresponding path program 1 times [2022-07-12 06:58:35,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:58:35,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924611960] [2022-07-12 06:58:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:58:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:58:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:58:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:58:36,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:58:36,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924611960] [2022-07-12 06:58:36,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924611960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:58:36,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:58:36,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-12 06:58:36,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610591350] [2022-07-12 06:58:36,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:58:36,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 06:58:36,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:58:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 06:58:36,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-07-12 06:58:36,332 INFO L87 Difference]: Start difference. First operand 37804 states and 48245 transitions. Second operand has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:58:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:58:56,353 INFO L93 Difference]: Finished difference Result 61280 states and 81420 transitions. [2022-07-12 06:58:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 06:58:56,354 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-12 06:58:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:58:56,448 INFO L225 Difference]: With dead ends: 61280 [2022-07-12 06:58:56,449 INFO L226 Difference]: Without dead ends: 59372 [2022-07-12 06:58:56,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2022-07-12 06:58:56,467 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 6476 mSDsluCounter, 14996 mSDsCounter, 0 mSdLazyCounter, 5101 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6476 SdHoareTripleChecker+Valid, 16010 SdHoareTripleChecker+Invalid, 5266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 5101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:58:56,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6476 Valid, 16010 Invalid, 5266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 5101 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 06:58:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59372 states. [2022-07-12 06:59:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59372 to 39251. [2022-07-12 06:59:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39251 states, 39246 states have (on average 1.2729959741120114) internal successors, (49960), 39250 states have internal predecessors, (49960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39251 states to 39251 states and 49960 transitions. [2022-07-12 06:59:03,811 INFO L78 Accepts]: Start accepts. Automaton has 39251 states and 49960 transitions. Word has length 171 [2022-07-12 06:59:03,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:03,812 INFO L495 AbstractCegarLoop]: Abstraction has 39251 states and 49960 transitions. [2022-07-12 06:59:03,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 24 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 39251 states and 49960 transitions. [2022-07-12 06:59:03,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-12 06:59:03,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:03,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:03,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 06:59:03,846 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:59:03,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash 2108510481, now seen corresponding path program 1 times [2022-07-12 06:59:03,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:03,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003156564] [2022-07-12 06:59:03,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:03,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:04,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:04,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:04,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003156564] [2022-07-12 06:59:04,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003156564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:04,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:04,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 06:59:04,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145501817] [2022-07-12 06:59:04,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:04,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 06:59:04,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:04,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 06:59:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:59:04,148 INFO L87 Difference]: Start difference. First operand 39251 states and 49960 transitions. Second operand has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:59:28,237 INFO L93 Difference]: Finished difference Result 108445 states and 147435 transitions. [2022-07-12 06:59:28,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 06:59:28,238 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-12 06:59:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:59:28,426 INFO L225 Difference]: With dead ends: 108445 [2022-07-12 06:59:28,426 INFO L226 Difference]: Without dead ends: 102134 [2022-07-12 06:59:28,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2022-07-12 06:59:28,455 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 4903 mSDsluCounter, 8621 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4903 SdHoareTripleChecker+Valid, 9661 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:59:28,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4903 Valid, 9661 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:59:28,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102134 states. [2022-07-12 06:59:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102134 to 50673. [2022-07-12 06:59:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50673 states, 50668 states have (on average 1.2525657219546853) internal successors, (63465), 50672 states have internal predecessors, (63465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50673 states to 50673 states and 63465 transitions. [2022-07-12 06:59:39,617 INFO L78 Accepts]: Start accepts. Automaton has 50673 states and 63465 transitions. Word has length 171 [2022-07-12 06:59:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:59:39,618 INFO L495 AbstractCegarLoop]: Abstraction has 50673 states and 63465 transitions. [2022-07-12 06:59:39,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:59:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 50673 states and 63465 transitions. [2022-07-12 06:59:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-12 06:59:39,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:59:39,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:59:39,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 06:59:39,780 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-12 06:59:39,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:59:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1138208644, now seen corresponding path program 1 times [2022-07-12 06:59:39,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:59:39,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026241261] [2022-07-12 06:59:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:59:39,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:59:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:59:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:59:40,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:59:40,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026241261] [2022-07-12 06:59:40,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026241261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:59:40,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:59:40,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 06:59:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800477370] [2022-07-12 06:59:40,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:59:40,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 06:59:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:59:40,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 06:59:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:59:40,010 INFO L87 Difference]: Start difference. First operand 50673 states and 63465 transitions. Second operand has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:00:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:00:03,269 INFO L93 Difference]: Finished difference Result 84993 states and 110146 transitions. [2022-07-12 07:00:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-12 07:00:03,269 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-12 07:00:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:00:03,394 INFO L225 Difference]: With dead ends: 84993 [2022-07-12 07:00:03,395 INFO L226 Difference]: Without dead ends: 78786 [2022-07-12 07:00:03,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=724, Invalid=1826, Unknown=0, NotChecked=0, Total=2550 [2022-07-12 07:00:03,423 INFO L413 NwaCegarLoop]: 1115 mSDtfsCounter, 5114 mSDsluCounter, 8638 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5114 SdHoareTripleChecker+Valid, 9753 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:00:03,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5114 Valid, 9753 Invalid, 2246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 07:00:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78786 states.