./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.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 ef92e2cd363e9cbada9057da9935ca7963cc6741d3474fe25a5d63d0a08b0a5f --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:40:22,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:40:22,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:40:22,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:40:22,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:40:22,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:40:22,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:40:22,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:40:22,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:40:22,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:40:22,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:40:22,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:40:22,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:40:22,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:40:22,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:40:22,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:40:22,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:40:22,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:40:22,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:40:22,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:40:22,354 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:40:22,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:40:22,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:40:22,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:40:22,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:40:22,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:40:22,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:40:22,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:40:22,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:40:22,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:40:22,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:40:22,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:40:22,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:40:22,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:40:22,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:40:22,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:40:22,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:40:22,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:40:22,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:40:22,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:40:22,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:40:22,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:40:22,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:40:22,385 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:40:22,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:40:22,385 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:40:22,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:40:22,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:40:22,386 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:40:22,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:40:22,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:40:22,387 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:40:22,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:40:22,387 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:40:22,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:40:22,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:40:22,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:40:22,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:40:22,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:40:22,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:40:22,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:40:22,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:40:22,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:40:22,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:40:22,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:40:22,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:40:22,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:40:22,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:40:22,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:40:22,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:40:22,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:40:22,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:40:22,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:40:22,390 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:40:22,390 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:40:22,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:40:22,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef92e2cd363e9cbada9057da9935ca7963cc6741d3474fe25a5d63d0a08b0a5f [2022-07-19 18:40:22,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:40:22,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:40:22,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:40:22,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:40:22,611 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:40:22,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:40:22,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8c5c1c9/621b022a60d9485f8e51b872496d133a/FLAG37ca48eef [2022-07-19 18:40:23,088 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:40:23,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:40:23,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8c5c1c9/621b022a60d9485f8e51b872496d133a/FLAG37ca48eef [2022-07-19 18:40:23,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f8c5c1c9/621b022a60d9485f8e51b872496d133a [2022-07-19 18:40:23,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:40:23,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:40:23,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:40:23,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:40:23,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:40:23,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d78de59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23, skipping insertion in model container [2022-07-19 18:40:23,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:40:23,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:40:23,458 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15169,15182] [2022-07-19 18:40:23,465 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15816,15829] [2022-07-19 18:40:23,475 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17200,17213] [2022-07-19 18:40:23,481 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18176,18189] [2022-07-19 18:40:23,528 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27541,27554] [2022-07-19 18:40:23,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:40:23,581 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:40:23,684 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15169,15182] [2022-07-19 18:40:23,688 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15816,15829] [2022-07-19 18:40:23,696 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17200,17213] [2022-07-19 18:40:23,703 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18176,18189] [2022-07-19 18:40:23,732 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_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27541,27554] [2022-07-19 18:40:23,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:40:23,781 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:40:23,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23 WrapperNode [2022-07-19 18:40:23,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:40:23,783 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:40:23,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:40:23,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:40:23,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,863 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1666 [2022-07-19 18:40:23,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:40:23,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:40:23,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:40:23,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:40:23,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:40:23,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:40:23,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:40:23,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:40:23,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (1/1) ... [2022-07-19 18:40:23,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:40:23,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:40:23,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 18:40:23,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 18:40:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:40:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:40:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:40:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:40:24,137 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:40:24,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:40:24,947 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:40:24,959 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:40:24,959 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:40:24,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:40:24 BoogieIcfgContainer [2022-07-19 18:40:24,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:40:24,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:40:24,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:40:24,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:40:24,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:40:23" (1/3) ... [2022-07-19 18:40:24,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae02ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:40:24, skipping insertion in model container [2022-07-19 18:40:24,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:23" (2/3) ... [2022-07-19 18:40:24,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae02ebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:40:24, skipping insertion in model container [2022-07-19 18:40:24,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:40:24" (3/3) ... [2022-07-19 18:40:24,968 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:40:24,977 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:40:24,977 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-07-19 18:40:25,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:40:25,044 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@795d5d1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23b5c08f [2022-07-19 18:40:25,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 18:40:25,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 411 states, 405 states have (on average 1.8098765432098765) internal successors, (733), 410 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:25,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 18:40:25,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:25,077 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] [2022-07-19 18:40:25,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash -430745720, now seen corresponding path program 1 times [2022-07-19 18:40:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:25,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96822538] [2022-07-19 18:40:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:25,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:25,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96822538] [2022-07-19 18:40:25,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96822538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:25,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:25,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:25,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138927556] [2022-07-19 18:40:25,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:25,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:25,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:25,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:25,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:25,528 INFO L87 Difference]: Start difference. First operand has 411 states, 405 states have (on average 1.8098765432098765) internal successors, (733), 410 states have internal predecessors, (733), 0 states have call successors, (0), 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 49.0) internal successors, (147), 3 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) [2022-07-19 18:40:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:25,725 INFO L93 Difference]: Finished difference Result 753 states and 1326 transitions. [2022-07-19 18:40:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:25,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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 [2022-07-19 18:40:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:25,743 INFO L225 Difference]: With dead ends: 753 [2022-07-19 18:40:25,743 INFO L226 Difference]: Without dead ends: 596 [2022-07-19 18:40:25,746 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 [2022-07-19 18:40:25,749 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 434 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:25,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1316 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:40:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-07-19 18:40:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 594. [2022-07-19 18:40:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 589 states have (on average 1.4736842105263157) internal successors, (868), 593 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 868 transitions. [2022-07-19 18:40:25,811 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 868 transitions. Word has length 147 [2022-07-19 18:40:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:25,811 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 868 transitions. [2022-07-19 18:40:25,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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) [2022-07-19 18:40:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 868 transitions. [2022-07-19 18:40:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 18:40:25,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:25,819 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] [2022-07-19 18:40:25,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:40:25,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:25,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash -734514301, now seen corresponding path program 1 times [2022-07-19 18:40:25,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:25,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544535353] [2022-07-19 18:40:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:25,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:25,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:25,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544535353] [2022-07-19 18:40:25,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544535353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:25,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:25,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:25,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704817030] [2022-07-19 18:40:25,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:25,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:25,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:25,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:25,941 INFO L87 Difference]: Start difference. First operand 594 states and 868 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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) [2022-07-19 18:40:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:26,063 INFO L93 Difference]: Finished difference Result 1211 states and 1828 transitions. [2022-07-19 18:40:26,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:26,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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 [2022-07-19 18:40:26,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:26,068 INFO L225 Difference]: With dead ends: 1211 [2022-07-19 18:40:26,068 INFO L226 Difference]: Without dead ends: 988 [2022-07-19 18:40:26,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:26,072 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 351 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:26,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1080 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:40:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-07-19 18:40:26,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 986. [2022-07-19 18:40:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 981 states have (on average 1.4933741080530072) internal successors, (1465), 985 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:26,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1465 transitions. [2022-07-19 18:40:26,117 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1465 transitions. Word has length 147 [2022-07-19 18:40:26,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:26,118 INFO L495 AbstractCegarLoop]: Abstraction has 986 states and 1465 transitions. [2022-07-19 18:40:26,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 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) [2022-07-19 18:40:26,119 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1465 transitions. [2022-07-19 18:40:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 18:40:26,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:26,121 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] [2022-07-19 18:40:26,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:40:26,125 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)] === [2022-07-19 18:40:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:26,126 INFO L85 PathProgramCache]: Analyzing trace with hash -734945277, now seen corresponding path program 1 times [2022-07-19 18:40:26,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:26,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116125923] [2022-07-19 18:40:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:26,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:26,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:26,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116125923] [2022-07-19 18:40:26,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116125923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:26,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:26,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:40:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623892319] [2022-07-19 18:40:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:26,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:40:26,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:40:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:40:26,330 INFO L87 Difference]: Start difference. First operand 986 states and 1465 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) [2022-07-19 18:40:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:26,460 INFO L93 Difference]: Finished difference Result 2903 states and 4300 transitions. [2022-07-19 18:40:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:26,461 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 [2022-07-19 18:40:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:26,468 INFO L225 Difference]: With dead ends: 2903 [2022-07-19 18:40:26,469 INFO L226 Difference]: Without dead ends: 1926 [2022-07-19 18:40:26,472 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 [2022-07-19 18:40:26,474 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 1333 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:26,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 1413 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:26,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-07-19 18:40:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1878. [2022-07-19 18:40:26,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1873 states have (on average 1.4831820608649227) internal successors, (2778), 1877 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2778 transitions. [2022-07-19 18:40:26,552 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2778 transitions. Word has length 147 [2022-07-19 18:40:26,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:26,552 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2778 transitions. [2022-07-19 18:40:26,553 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) [2022-07-19 18:40:26,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2778 transitions. [2022-07-19 18:40:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 18:40:26,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:26,555 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] [2022-07-19 18:40:26,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:40:26,555 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)] === [2022-07-19 18:40:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash -464497969, now seen corresponding path program 1 times [2022-07-19 18:40:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:26,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830160139] [2022-07-19 18:40:26,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:26,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:26,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:26,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830160139] [2022-07-19 18:40:26,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830160139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:26,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:26,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:26,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809981414] [2022-07-19 18:40:26,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:26,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:26,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:26,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:26,624 INFO L87 Difference]: Start difference. First operand 1878 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:26,765 INFO L93 Difference]: Finished difference Result 5596 states and 8272 transitions. [2022-07-19 18:40:26,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:26,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-07-19 18:40:26,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:26,776 INFO L225 Difference]: With dead ends: 5596 [2022-07-19 18:40:26,776 INFO L226 Difference]: Without dead ends: 3746 [2022-07-19 18:40:26,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:26,783 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 573 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1729 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 [2022-07-19 18:40:26,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 1729 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2022-07-19 18:40:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 1880. [2022-07-19 18:40:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1875 states have (on average 1.4826666666666666) internal successors, (2780), 1879 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2780 transitions. [2022-07-19 18:40:26,918 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2780 transitions. Word has length 148 [2022-07-19 18:40:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:26,918 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 2780 transitions. [2022-07-19 18:40:26,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2780 transitions. [2022-07-19 18:40:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 18:40:26,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:26,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:40:26,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:40:26,921 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)] === [2022-07-19 18:40:26,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1286115900, now seen corresponding path program 1 times [2022-07-19 18:40:26,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:26,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235822624] [2022-07-19 18:40:26,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:26,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:26,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:26,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235822624] [2022-07-19 18:40:26,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235822624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:26,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:26,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:26,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548799034] [2022-07-19 18:40:26,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:26,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:26,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:26,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:26,967 INFO L87 Difference]: Start difference. First operand 1880 states and 2780 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:27,189 INFO L93 Difference]: Finished difference Result 4936 states and 7286 transitions. [2022-07-19 18:40:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-07-19 18:40:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:27,198 INFO L225 Difference]: With dead ends: 4936 [2022-07-19 18:40:27,198 INFO L226 Difference]: Without dead ends: 3249 [2022-07-19 18:40:27,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:27,202 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 508 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1599 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 [2022-07-19 18:40:27,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1599 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:27,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2022-07-19 18:40:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 3201. [2022-07-19 18:40:27,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3196 states have (on average 1.463078848560701) internal successors, (4676), 3200 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4676 transitions. [2022-07-19 18:40:27,352 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4676 transitions. Word has length 149 [2022-07-19 18:40:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:27,353 INFO L495 AbstractCegarLoop]: Abstraction has 3201 states and 4676 transitions. [2022-07-19 18:40:27,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:27,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4676 transitions. [2022-07-19 18:40:27,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 18:40:27,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:27,357 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] [2022-07-19 18:40:27,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:40:27,358 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)] === [2022-07-19 18:40:27,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:27,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1559353287, now seen corresponding path program 1 times [2022-07-19 18:40:27,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:27,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530967171] [2022-07-19 18:40:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:27,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:27,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:27,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530967171] [2022-07-19 18:40:27,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530967171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:27,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:27,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:40:27,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794061387] [2022-07-19 18:40:27,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:27,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:40:27,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:27,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:40:27,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:40:27,455 INFO L87 Difference]: Start difference. First operand 3201 states and 4676 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:27,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:27,792 INFO L93 Difference]: Finished difference Result 9247 states and 13479 transitions. [2022-07-19 18:40:27,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:27,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-07-19 18:40:27,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:27,808 INFO L225 Difference]: With dead ends: 9247 [2022-07-19 18:40:27,808 INFO L226 Difference]: Without dead ends: 6060 [2022-07-19 18:40:27,811 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 [2022-07-19 18:40:27,812 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 1098 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:27,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 2076 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2022-07-19 18:40:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 6026. [2022-07-19 18:40:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 6021 states have (on average 1.4487626640093008) internal successors, (8723), 6025 states have internal predecessors, (8723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 8723 transitions. [2022-07-19 18:40:28,165 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 8723 transitions. Word has length 149 [2022-07-19 18:40:28,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:28,165 INFO L495 AbstractCegarLoop]: Abstraction has 6026 states and 8723 transitions. [2022-07-19 18:40:28,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 8723 transitions. [2022-07-19 18:40:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 18:40:28,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:28,171 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] [2022-07-19 18:40:28,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:40:28,172 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)] === [2022-07-19 18:40:28,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:28,172 INFO L85 PathProgramCache]: Analyzing trace with hash 978797474, now seen corresponding path program 1 times [2022-07-19 18:40:28,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:28,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078387221] [2022-07-19 18:40:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:28,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:28,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:28,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078387221] [2022-07-19 18:40:28,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078387221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:28,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:28,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:40:28,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772859860] [2022-07-19 18:40:28,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:28,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:40:28,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:28,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:40:28,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:40:28,250 INFO L87 Difference]: Start difference. First operand 6026 states and 8723 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:28,843 INFO L93 Difference]: Finished difference Result 17607 states and 25392 transitions. [2022-07-19 18:40:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:28,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-07-19 18:40:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:28,875 INFO L225 Difference]: With dead ends: 17607 [2022-07-19 18:40:28,875 INFO L226 Difference]: Without dead ends: 11637 [2022-07-19 18:40:28,883 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 [2022-07-19 18:40:28,884 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1155 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1540 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 [2022-07-19 18:40:28,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1540 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:28,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11637 states. [2022-07-19 18:40:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11637 to 11577. [2022-07-19 18:40:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11577 states, 11572 states have (on average 1.4308676114759764) internal successors, (16558), 11576 states have internal predecessors, (16558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11577 states to 11577 states and 16558 transitions. [2022-07-19 18:40:29,721 INFO L78 Accepts]: Start accepts. Automaton has 11577 states and 16558 transitions. Word has length 149 [2022-07-19 18:40:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:29,721 INFO L495 AbstractCegarLoop]: Abstraction has 11577 states and 16558 transitions. [2022-07-19 18:40:29,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 11577 states and 16558 transitions. [2022-07-19 18:40:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 18:40:29,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:29,732 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] [2022-07-19 18:40:29,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:40:29,733 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)] === [2022-07-19 18:40:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:29,733 INFO L85 PathProgramCache]: Analyzing trace with hash -728227058, now seen corresponding path program 1 times [2022-07-19 18:40:29,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:29,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344856590] [2022-07-19 18:40:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:29,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:29,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:29,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344856590] [2022-07-19 18:40:29,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344856590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:29,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:29,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188255118] [2022-07-19 18:40:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:29,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:29,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:29,763 INFO L87 Difference]: Start difference. First operand 11577 states and 16558 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:30,787 INFO L93 Difference]: Finished difference Result 34579 states and 49441 transitions. [2022-07-19 18:40:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:30,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-07-19 18:40:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:30,827 INFO L225 Difference]: With dead ends: 34579 [2022-07-19 18:40:30,828 INFO L226 Difference]: Without dead ends: 23093 [2022-07-19 18:40:30,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:30,843 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 559 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1289 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 [2022-07-19 18:40:30,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1289 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23093 states. [2022-07-19 18:40:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23093 to 11587. [2022-07-19 18:40:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11587 states, 11582 states have (on average 1.4304955966154378) internal successors, (16568), 11586 states have internal predecessors, (16568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11587 states to 11587 states and 16568 transitions. [2022-07-19 18:40:31,643 INFO L78 Accepts]: Start accepts. Automaton has 11587 states and 16568 transitions. Word has length 150 [2022-07-19 18:40:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:31,643 INFO L495 AbstractCegarLoop]: Abstraction has 11587 states and 16568 transitions. [2022-07-19 18:40:31,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states and 16568 transitions. [2022-07-19 18:40:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-19 18:40:31,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:31,655 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] [2022-07-19 18:40:31,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:40:31,656 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)] === [2022-07-19 18:40:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash -478461247, now seen corresponding path program 1 times [2022-07-19 18:40:31,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:31,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703723629] [2022-07-19 18:40:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:31,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:31,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:31,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703723629] [2022-07-19 18:40:31,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703723629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:31,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:31,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:40:31,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75800420] [2022-07-19 18:40:31,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:31,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:40:31,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:31,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:40:31,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:40:31,723 INFO L87 Difference]: Start difference. First operand 11587 states and 16568 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:33,038 INFO L93 Difference]: Finished difference Result 33751 states and 48099 transitions. [2022-07-19 18:40:33,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:33,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2022-07-19 18:40:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:33,070 INFO L225 Difference]: With dead ends: 33751 [2022-07-19 18:40:33,070 INFO L226 Difference]: Without dead ends: 22265 [2022-07-19 18:40:33,082 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 [2022-07-19 18:40:33,083 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1183 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1497 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 [2022-07-19 18:40:33,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1497 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22265 states. [2022-07-19 18:40:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22265 to 22205. [2022-07-19 18:40:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22205 states, 22200 states have (on average 1.411891891891892) internal successors, (31344), 22204 states have internal predecessors, (31344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22205 states to 22205 states and 31344 transitions. [2022-07-19 18:40:34,399 INFO L78 Accepts]: Start accepts. Automaton has 22205 states and 31344 transitions. Word has length 151 [2022-07-19 18:40:34,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:34,399 INFO L495 AbstractCegarLoop]: Abstraction has 22205 states and 31344 transitions. [2022-07-19 18:40:34,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 22205 states and 31344 transitions. [2022-07-19 18:40:34,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 18:40:34,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:34,420 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] [2022-07-19 18:40:34,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:40:34,421 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)] === [2022-07-19 18:40:34,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2137159373, now seen corresponding path program 1 times [2022-07-19 18:40:34,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:34,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17080173] [2022-07-19 18:40:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:34,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:34,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17080173] [2022-07-19 18:40:34,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17080173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:34,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:34,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:34,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121425115] [2022-07-19 18:40:34,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:34,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:34,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:34,448 INFO L87 Difference]: Start difference. First operand 22205 states and 31344 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:37,126 INFO L93 Difference]: Finished difference Result 65403 states and 92484 transitions. [2022-07-19 18:40:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:37,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2022-07-19 18:40:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:37,191 INFO L225 Difference]: With dead ends: 65403 [2022-07-19 18:40:37,192 INFO L226 Difference]: Without dead ends: 44129 [2022-07-19 18:40:37,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:37,220 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 545 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1701 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 [2022-07-19 18:40:37,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1701 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:37,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44129 states. [2022-07-19 18:40:38,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44129 to 22225. [2022-07-19 18:40:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22225 states, 22220 states have (on average 1.4115211521152116) internal successors, (31364), 22224 states have internal predecessors, (31364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22225 states to 22225 states and 31364 transitions. [2022-07-19 18:40:38,906 INFO L78 Accepts]: Start accepts. Automaton has 22225 states and 31364 transitions. Word has length 152 [2022-07-19 18:40:38,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:38,906 INFO L495 AbstractCegarLoop]: Abstraction has 22225 states and 31364 transitions. [2022-07-19 18:40:38,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:38,907 INFO L276 IsEmpty]: Start isEmpty. Operand 22225 states and 31364 transitions. [2022-07-19 18:40:38,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 18:40:38,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:38,932 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] [2022-07-19 18:40:38,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 18:40:38,933 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)] === [2022-07-19 18:40:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:38,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2021361859, now seen corresponding path program 1 times [2022-07-19 18:40:38,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:38,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222678651] [2022-07-19 18:40:38,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:38,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:39,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:39,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222678651] [2022-07-19 18:40:39,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222678651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:39,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:39,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:40:39,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512748989] [2022-07-19 18:40:39,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:39,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:40:39,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:39,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:40:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:40:39,013 INFO L87 Difference]: Start difference. First operand 22225 states and 31364 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:40,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:40,559 INFO L93 Difference]: Finished difference Result 45181 states and 63572 transitions. [2022-07-19 18:40:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:40,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-07-19 18:40:40,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:40,587 INFO L225 Difference]: With dead ends: 45181 [2022-07-19 18:40:40,587 INFO L226 Difference]: Without dead ends: 23181 [2022-07-19 18:40:40,604 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 [2022-07-19 18:40:40,605 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 1077 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:40,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1977 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:40,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23181 states. [2022-07-19 18:40:42,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23181 to 22747. [2022-07-19 18:40:42,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22747 states, 22742 states have (on average 1.405109489051095) internal successors, (31955), 22746 states have internal predecessors, (31955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22747 states to 22747 states and 31955 transitions. [2022-07-19 18:40:42,525 INFO L78 Accepts]: Start accepts. Automaton has 22747 states and 31955 transitions. Word has length 153 [2022-07-19 18:40:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:42,525 INFO L495 AbstractCegarLoop]: Abstraction has 22747 states and 31955 transitions. [2022-07-19 18:40:42,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 22747 states and 31955 transitions. [2022-07-19 18:40:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 18:40:42,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:42,546 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] [2022-07-19 18:40:42,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 18:40:42,547 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)] === [2022-07-19 18:40:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 237133152, now seen corresponding path program 1 times [2022-07-19 18:40:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:42,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237156262] [2022-07-19 18:40:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:42,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:42,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:42,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237156262] [2022-07-19 18:40:42,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237156262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:42,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:42,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:40:42,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334483256] [2022-07-19 18:40:42,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:42,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:40:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:42,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:40:42,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:40:42,631 INFO L87 Difference]: Start difference. First operand 22747 states and 31955 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:43,796 INFO L93 Difference]: Finished difference Result 38991 states and 54828 transitions. [2022-07-19 18:40:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:43,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-07-19 18:40:43,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:43,817 INFO L225 Difference]: With dead ends: 38991 [2022-07-19 18:40:43,818 INFO L226 Difference]: Without dead ends: 16422 [2022-07-19 18:40:43,836 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 [2022-07-19 18:40:43,838 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 65 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1780 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 [2022-07-19 18:40:43,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1780 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16422 states. [2022-07-19 18:40:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16422 to 16422. [2022-07-19 18:40:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16422 states, 16417 states have (on average 1.4056161296217335) internal successors, (23076), 16421 states have internal predecessors, (23076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16422 states to 16422 states and 23076 transitions. [2022-07-19 18:40:44,964 INFO L78 Accepts]: Start accepts. Automaton has 16422 states and 23076 transitions. Word has length 153 [2022-07-19 18:40:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:44,964 INFO L495 AbstractCegarLoop]: Abstraction has 16422 states and 23076 transitions. [2022-07-19 18:40:44,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 16422 states and 23076 transitions. [2022-07-19 18:40:44,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 18:40:44,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:44,976 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] [2022-07-19 18:40:44,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 18:40:44,976 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)] === [2022-07-19 18:40:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:44,977 INFO L85 PathProgramCache]: Analyzing trace with hash 194231239, now seen corresponding path program 1 times [2022-07-19 18:40:44,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:44,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125072840] [2022-07-19 18:40:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:44,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:45,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:45,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125072840] [2022-07-19 18:40:45,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125072840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:45,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:45,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:45,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188765821] [2022-07-19 18:40:45,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:45,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:45,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:45,007 INFO L87 Difference]: Start difference. First operand 16422 states and 23076 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:46,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:46,469 INFO L93 Difference]: Finished difference Result 37692 states and 54421 transitions. [2022-07-19 18:40:46,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:46,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2022-07-19 18:40:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:46,499 INFO L225 Difference]: With dead ends: 37692 [2022-07-19 18:40:46,500 INFO L226 Difference]: Without dead ends: 22216 [2022-07-19 18:40:46,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:46,519 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 233 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:46,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1178 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22216 states. [2022-07-19 18:40:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22216 to 21734. [2022-07-19 18:40:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21734 states, 21729 states have (on average 1.451700492429472) internal successors, (31544), 21733 states have internal predecessors, (31544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21734 states to 21734 states and 31544 transitions. [2022-07-19 18:40:48,103 INFO L78 Accepts]: Start accepts. Automaton has 21734 states and 31544 transitions. Word has length 156 [2022-07-19 18:40:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:48,103 INFO L495 AbstractCegarLoop]: Abstraction has 21734 states and 31544 transitions. [2022-07-19 18:40:48,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 21734 states and 31544 transitions. [2022-07-19 18:40:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 18:40:48,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:48,113 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] [2022-07-19 18:40:48,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 18:40:48,114 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1124301261, now seen corresponding path program 1 times [2022-07-19 18:40:48,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:48,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181559167] [2022-07-19 18:40:48,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:48,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:48,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:48,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:48,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181559167] [2022-07-19 18:40:48,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181559167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:48,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:48,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:48,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101909486] [2022-07-19 18:40:48,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:48,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:48,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:48,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:48,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:48,149 INFO L87 Difference]: Start difference. First operand 21734 states and 31544 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:50,813 INFO L93 Difference]: Finished difference Result 58050 states and 84308 transitions. [2022-07-19 18:40:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:50,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-07-19 18:40:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:50,871 INFO L225 Difference]: With dead ends: 58050 [2022-07-19 18:40:50,871 INFO L226 Difference]: Without dead ends: 37794 [2022-07-19 18:40:50,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:50,895 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 492 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:50,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1570 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37794 states. [2022-07-19 18:40:53,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37794 to 37764. [2022-07-19 18:40:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37764 states, 37759 states have (on average 1.4282157896130723) internal successors, (53928), 37763 states have internal predecessors, (53928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37764 states to 37764 states and 53928 transitions. [2022-07-19 18:40:53,833 INFO L78 Accepts]: Start accepts. Automaton has 37764 states and 53928 transitions. Word has length 159 [2022-07-19 18:40:53,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:53,833 INFO L495 AbstractCegarLoop]: Abstraction has 37764 states and 53928 transitions. [2022-07-19 18:40:53,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:53,833 INFO L276 IsEmpty]: Start isEmpty. Operand 37764 states and 53928 transitions. [2022-07-19 18:40:53,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 18:40:53,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:53,850 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] [2022-07-19 18:40:53,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 18:40:53,850 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:53,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash -983486256, now seen corresponding path program 1 times [2022-07-19 18:40:53,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:53,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217177742] [2022-07-19 18:40:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:53,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:53,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:53,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217177742] [2022-07-19 18:40:53,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217177742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:53,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:53,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:40:53,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023196967] [2022-07-19 18:40:53,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:53,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:40:53,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:40:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:40:53,897 INFO L87 Difference]: Start difference. First operand 37764 states and 53928 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:57,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:57,315 INFO L93 Difference]: Finished difference Result 74104 states and 106291 transitions. [2022-07-19 18:40:57,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:40:57,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-07-19 18:40:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:57,366 INFO L225 Difference]: With dead ends: 74104 [2022-07-19 18:40:57,366 INFO L226 Difference]: Without dead ends: 37764 [2022-07-19 18:40:57,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:40:57,392 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1551 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:57,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 550 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:40:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37764 states. [2022-07-19 18:41:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37764 to 37764. [2022-07-19 18:41:00,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37764 states, 37759 states have (on average 1.4214359490452608) internal successors, (53672), 37763 states have internal predecessors, (53672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37764 states to 37764 states and 53672 transitions. [2022-07-19 18:41:00,859 INFO L78 Accepts]: Start accepts. Automaton has 37764 states and 53672 transitions. Word has length 159 [2022-07-19 18:41:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:00,859 INFO L495 AbstractCegarLoop]: Abstraction has 37764 states and 53672 transitions. [2022-07-19 18:41:00,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 37764 states and 53672 transitions. [2022-07-19 18:41:00,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 18:41:00,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:00,876 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] [2022-07-19 18:41:00,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 18:41:00,876 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:41:00,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:00,877 INFO L85 PathProgramCache]: Analyzing trace with hash -378867883, now seen corresponding path program 1 times [2022-07-19 18:41:00,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:00,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738318692] [2022-07-19 18:41:00,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:00,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:00,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738318692] [2022-07-19 18:41:00,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738318692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:00,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:00,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:41:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231685214] [2022-07-19 18:41:00,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:00,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:41:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:41:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:41:00,935 INFO L87 Difference]: Start difference. First operand 37764 states and 53672 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:04,103 INFO L93 Difference]: Finished difference Result 62159 states and 88561 transitions. [2022-07-19 18:41:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:41:04,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2022-07-19 18:41:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:04,157 INFO L225 Difference]: With dead ends: 62159 [2022-07-19 18:41:04,157 INFO L226 Difference]: Without dead ends: 33555 [2022-07-19 18:41:04,177 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 [2022-07-19 18:41:04,179 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 53 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1751 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 [2022-07-19 18:41:04,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1751 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:41:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33555 states.