./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.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 5f48d0b4a615a6de52190ef85cf1bf2dbac852c0e9158969f5c060f302d156f9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:14:36,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:14:36,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:14:36,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:14:36,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:14:36,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:14:36,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:14:36,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:14:36,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:14:36,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:14:36,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:14:36,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:14:36,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:14:36,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:14:36,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:14:36,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:14:36,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:14:36,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:14:36,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:14:36,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:14:36,516 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:14:36,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:14:36,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:14:36,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:14:36,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:14:36,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:14:36,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:14:36,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:14:36,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:14:36,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:14:36,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:14:36,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:14:36,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:14:36,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:14:36,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:14:36,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:14:36,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:14:36,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:14:36,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:14:36,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:14:36,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:14:36,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:14:36,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:14:36,587 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:14:36,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:14:36,588 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:14:36,588 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:14:36,589 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:14:36,589 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:14:36,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:14:36,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:14:36,590 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:14:36,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:14:36,591 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:14:36,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:14:36,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:14:36,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:14:36,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:14:36,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:14:36,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:14:36,592 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:14:36,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:14:36,592 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:14:36,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:14:36,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:14:36,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:14:36,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:14:36,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:14:36,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:14:36,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:14:36,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:14:36,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:14:36,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:14:36,601 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:14:36,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:14:36,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:14:36,601 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f48d0b4a615a6de52190ef85cf1bf2dbac852c0e9158969f5c060f302d156f9 [2022-07-22 18:14:37,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:14:37,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:14:37,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:14:37,041 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:14:37,042 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:14:37,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-22 18:14:37,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6610473/ba4f0767558b43038cb71c8e01924797/FLAGbe31b2163 [2022-07-22 18:14:37,858 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:14:37,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-22 18:14:37,876 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6610473/ba4f0767558b43038cb71c8e01924797/FLAGbe31b2163 [2022-07-22 18:14:37,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac6610473/ba4f0767558b43038cb71c8e01924797 [2022-07-22 18:14:37,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:14:37,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:14:37,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:14:37,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:14:37,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:14:37,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:14:37" (1/1) ... [2022-07-22 18:14:37,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365fdcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:37, skipping insertion in model container [2022-07-22 18:14:37,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:14:37" (1/1) ... [2022-07-22 18:14:37,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:14:38,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:14:38,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13790,13803] [2022-07-22 18:14:38,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14437,14450] [2022-07-22 18:14:38,562 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15670,15683] [2022-07-22 18:14:38,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16730,16743] [2022-07-22 18:14:38,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25121,25134] [2022-07-22 18:14:38,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:14:38,793 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:14:38,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13790,13803] [2022-07-22 18:14:38,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14437,14450] [2022-07-22 18:14:38,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15670,15683] [2022-07-22 18:14:38,940 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16730,16743] [2022-07-22 18:14:39,023 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[25121,25134] [2022-07-22 18:14:39,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:14:39,111 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:14:39,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39 WrapperNode [2022-07-22 18:14:39,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:14:39,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:14:39,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:14:39,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:14:39,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,221 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1532 [2022-07-22 18:14:39,232 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:14:39,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:14:39,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:14:39,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:14:39,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:14:39,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:14:39,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:14:39,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:14:39,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (1/1) ... [2022-07-22 18:14:39,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:14:39,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:14:39,397 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) [2022-07-22 18:14:39,447 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 [2022-07-22 18:14:39,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:14:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:14:39,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:14:39,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:14:39,625 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:14:39,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:14:41,058 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:14:41,090 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:14:41,091 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:14:41,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:14:41 BoogieIcfgContainer [2022-07-22 18:14:41,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:14:41,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:14:41,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:14:41,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:14:41,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:14:37" (1/3) ... [2022-07-22 18:14:41,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd8d887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:14:41, skipping insertion in model container [2022-07-22 18:14:41,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:14:39" (2/3) ... [2022-07-22 18:14:41,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd8d887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:14:41, skipping insertion in model container [2022-07-22 18:14:41,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:14:41" (3/3) ... [2022-07-22 18:14:41,100 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-22 18:14:41,110 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:14:41,129 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-07-22 18:14:41,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:14:41,244 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@31575979, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13df9e6b [2022-07-22 18:14:41,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 18:14:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 360 states have (on average 1.836111111111111) internal successors, (661), 365 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 18:14:41,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:41,277 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] [2022-07-22 18:14:41,277 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)] === [2022-07-22 18:14:41,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:41,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1389049256, now seen corresponding path program 1 times [2022-07-22 18:14:41,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:41,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73933667] [2022-07-22 18:14:41,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:41,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:42,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:42,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73933667] [2022-07-22 18:14:42,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73933667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:42,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:42,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:14:42,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894613994] [2022-07-22 18:14:42,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:42,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:14:42,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:14:42,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:14:42,078 INFO L87 Difference]: Start difference. First operand has 366 states, 360 states have (on average 1.836111111111111) internal successors, (661), 365 states have internal predecessors, (661), 0 states have call successors, (0), 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 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:42,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:42,352 INFO L93 Difference]: Finished difference Result 661 states and 1183 transitions. [2022-07-22 18:14:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:14:42,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-22 18:14:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:42,382 INFO L225 Difference]: With dead ends: 661 [2022-07-22 18:14:42,383 INFO L226 Difference]: Without dead ends: 524 [2022-07-22 18:14:42,399 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 [2022-07-22 18:14:42,402 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 377 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:14:42,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1173 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:14:42,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-07-22 18:14:42,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2022-07-22 18:14:42,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 517 states have (on average 1.4777562862669245) internal successors, (764), 521 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 764 transitions. [2022-07-22 18:14:42,540 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 764 transitions. Word has length 136 [2022-07-22 18:14:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:42,542 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 764 transitions. [2022-07-22 18:14:42,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 764 transitions. [2022-07-22 18:14:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 18:14:42,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:42,553 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] [2022-07-22 18:14:42,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:14:42,568 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)] === [2022-07-22 18:14:42,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:42,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1134357785, now seen corresponding path program 1 times [2022-07-22 18:14:42,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:42,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867100026] [2022-07-22 18:14:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867100026] [2022-07-22 18:14:42,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867100026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:42,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:42,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:14:42,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000233434] [2022-07-22 18:14:42,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:42,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:14:42,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:14:42,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:14:42,815 INFO L87 Difference]: Start difference. First operand 522 states and 764 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:42,971 INFO L93 Difference]: Finished difference Result 1049 states and 1590 transitions. [2022-07-22 18:14:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:14:42,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-22 18:14:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:42,977 INFO L225 Difference]: With dead ends: 1049 [2022-07-22 18:14:42,977 INFO L226 Difference]: Without dead ends: 858 [2022-07-22 18:14:42,980 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 [2022-07-22 18:14:42,997 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 298 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 945 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 [2022-07-22 18:14:42,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 945 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:14:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-07-22 18:14:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 856. [2022-07-22 18:14:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 851 states have (on average 1.500587544065805) internal successors, (1277), 855 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1277 transitions. [2022-07-22 18:14:43,083 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1277 transitions. Word has length 136 [2022-07-22 18:14:43,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:43,084 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1277 transitions. [2022-07-22 18:14:43,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1277 transitions. [2022-07-22 18:14:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 18:14:43,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:43,086 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] [2022-07-22 18:14:43,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:14:43,090 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)] === [2022-07-22 18:14:43,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:43,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1133926809, now seen corresponding path program 1 times [2022-07-22 18:14:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:43,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707447078] [2022-07-22 18:14:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:43,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:43,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:43,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707447078] [2022-07-22 18:14:43,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707447078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:43,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:43,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:14:43,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105843590] [2022-07-22 18:14:43,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:43,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:14:43,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:43,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:14:43,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:14:43,461 INFO L87 Difference]: Start difference. First operand 856 states and 1277 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:43,705 INFO L93 Difference]: Finished difference Result 2518 states and 3746 transitions. [2022-07-22 18:14:43,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:14:43,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2022-07-22 18:14:43,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:43,713 INFO L225 Difference]: With dead ends: 2518 [2022-07-22 18:14:43,713 INFO L226 Difference]: Without dead ends: 1671 [2022-07-22 18:14:43,715 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 [2022-07-22 18:14:43,729 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 1215 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:14:43,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 1221 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:14:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-07-22 18:14:43,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1631. [2022-07-22 18:14:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1626 states have (on average 1.4883148831488315) internal successors, (2420), 1630 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2420 transitions. [2022-07-22 18:14:43,889 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2420 transitions. Word has length 136 [2022-07-22 18:14:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:43,889 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2420 transitions. [2022-07-22 18:14:43,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2420 transitions. [2022-07-22 18:14:43,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 18:14:43,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:43,896 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] [2022-07-22 18:14:43,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:14:43,897 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)] === [2022-07-22 18:14:43,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1978880461, now seen corresponding path program 1 times [2022-07-22 18:14:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:43,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074707217] [2022-07-22 18:14:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:43,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:43,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:43,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074707217] [2022-07-22 18:14:43,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074707217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:43,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:43,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:14:43,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312814451] [2022-07-22 18:14:43,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:43,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:14:43,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:43,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:14:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:14:43,983 INFO L87 Difference]: Start difference. First operand 1631 states and 2420 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:44,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:44,295 INFO L93 Difference]: Finished difference Result 4855 states and 7198 transitions. [2022-07-22 18:14:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:14:44,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-07-22 18:14:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:44,311 INFO L225 Difference]: With dead ends: 4855 [2022-07-22 18:14:44,327 INFO L226 Difference]: Without dead ends: 3252 [2022-07-22 18:14:44,330 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 [2022-07-22 18:14:44,335 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 509 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1098 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 [2022-07-22 18:14:44,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1098 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:14:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2022-07-22 18:14:44,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 1633. [2022-07-22 18:14:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1628 states have (on average 1.4877149877149878) internal successors, (2422), 1632 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2422 transitions. [2022-07-22 18:14:44,557 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2422 transitions. Word has length 137 [2022-07-22 18:14:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:44,558 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 2422 transitions. [2022-07-22 18:14:44,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:44,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2422 transitions. [2022-07-22 18:14:44,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 18:14:44,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:44,561 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] [2022-07-22 18:14:44,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:14:44,561 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)] === [2022-07-22 18:14:44,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:44,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2041441446, now seen corresponding path program 1 times [2022-07-22 18:14:44,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:44,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699616331] [2022-07-22 18:14:44,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:44,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:44,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:44,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699616331] [2022-07-22 18:14:44,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699616331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:44,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:44,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:14:44,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603985483] [2022-07-22 18:14:44,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:44,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:14:44,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:44,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:14:44,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:14:44,787 INFO L87 Difference]: Start difference. First operand 1633 states and 2422 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:45,207 INFO L93 Difference]: Finished difference Result 4755 states and 7034 transitions. [2022-07-22 18:14:45,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:14:45,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-07-22 18:14:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:45,237 INFO L225 Difference]: With dead ends: 4755 [2022-07-22 18:14:45,237 INFO L226 Difference]: Without dead ends: 3152 [2022-07-22 18:14:45,241 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 [2022-07-22 18:14:45,242 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1023 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:14:45,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1366 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:14:45,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-07-22 18:14:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 3112. [2022-07-22 18:14:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3112 states, 3107 states have (on average 1.473125201158674) internal successors, (4577), 3111 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3112 states to 3112 states and 4577 transitions. [2022-07-22 18:14:45,877 INFO L78 Accepts]: Start accepts. Automaton has 3112 states and 4577 transitions. Word has length 138 [2022-07-22 18:14:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:45,877 INFO L495 AbstractCegarLoop]: Abstraction has 3112 states and 4577 transitions. [2022-07-22 18:14:45,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3112 states and 4577 transitions. [2022-07-22 18:14:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 18:14:45,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:45,925 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] [2022-07-22 18:14:45,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:14:45,926 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)] === [2022-07-22 18:14:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash -413949202, now seen corresponding path program 1 times [2022-07-22 18:14:45,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:45,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951751453] [2022-07-22 18:14:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:45,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:46,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:46,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951751453] [2022-07-22 18:14:46,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951751453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:46,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:46,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:14:46,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718006388] [2022-07-22 18:14:46,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:46,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:14:46,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:46,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:14:46,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:14:46,168 INFO L87 Difference]: Start difference. First operand 3112 states and 4577 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:46,761 INFO L93 Difference]: Finished difference Result 9260 states and 13611 transitions. [2022-07-22 18:14:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:14:46,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-07-22 18:14:46,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:46,806 INFO L225 Difference]: With dead ends: 9260 [2022-07-22 18:14:46,806 INFO L226 Difference]: Without dead ends: 6192 [2022-07-22 18:14:46,811 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 [2022-07-22 18:14:46,828 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 495 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1523 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 [2022-07-22 18:14:46,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1523 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:14:46,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2022-07-22 18:14:47,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 3116. [2022-07-22 18:14:47,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 3111 states have (on average 1.4725168756027) internal successors, (4581), 3115 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 4581 transitions. [2022-07-22 18:14:47,286 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 4581 transitions. Word has length 139 [2022-07-22 18:14:47,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:47,286 INFO L495 AbstractCegarLoop]: Abstraction has 3116 states and 4581 transitions. [2022-07-22 18:14:47,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 4581 transitions. [2022-07-22 18:14:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 18:14:47,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:47,290 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] [2022-07-22 18:14:47,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:14:47,291 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)] === [2022-07-22 18:14:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:47,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1595701127, now seen corresponding path program 1 times [2022-07-22 18:14:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:47,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201911762] [2022-07-22 18:14:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:47,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:47,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201911762] [2022-07-22 18:14:47,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201911762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:47,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:47,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:14:47,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131346630] [2022-07-22 18:14:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:47,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:14:47,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:47,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:14:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:14:47,396 INFO L87 Difference]: Start difference. First operand 3116 states and 4581 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:48,143 INFO L93 Difference]: Finished difference Result 8828 states and 13011 transitions. [2022-07-22 18:14:48,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:14:48,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-07-22 18:14:48,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:48,179 INFO L225 Difference]: With dead ends: 8828 [2022-07-22 18:14:48,180 INFO L226 Difference]: Without dead ends: 6020 [2022-07-22 18:14:48,200 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 [2022-07-22 18:14:48,202 INFO L413 NwaCegarLoop]: 968 mSDtfsCounter, 439 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:14:48,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1448 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:14:48,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6020 states. [2022-07-22 18:14:48,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6020 to 5980. [2022-07-22 18:14:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 5975 states have (on average 1.457907949790795) internal successors, (8711), 5979 states have internal predecessors, (8711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 8711 transitions. [2022-07-22 18:14:49,003 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 8711 transitions. Word has length 140 [2022-07-22 18:14:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:49,004 INFO L495 AbstractCegarLoop]: Abstraction has 5980 states and 8711 transitions. [2022-07-22 18:14:49,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 8711 transitions. [2022-07-22 18:14:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 18:14:49,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:49,011 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] [2022-07-22 18:14:49,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:14:49,011 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)] === [2022-07-22 18:14:49,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:49,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1564522710, now seen corresponding path program 1 times [2022-07-22 18:14:49,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:49,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759130651] [2022-07-22 18:14:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:49,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:49,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:49,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759130651] [2022-07-22 18:14:49,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759130651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:49,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:49,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:14:49,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558921153] [2022-07-22 18:14:49,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:49,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:14:49,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:14:49,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:14:49,210 INFO L87 Difference]: Start difference. First operand 5980 states and 8711 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:50,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:50,839 INFO L93 Difference]: Finished difference Result 17210 states and 25046 transitions. [2022-07-22 18:14:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:14:50,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-07-22 18:14:50,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:50,901 INFO L225 Difference]: With dead ends: 17210 [2022-07-22 18:14:50,901 INFO L226 Difference]: Without dead ends: 11267 [2022-07-22 18:14:50,910 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 [2022-07-22 18:14:50,918 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 949 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:14:50,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1794 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:14:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11267 states. [2022-07-22 18:14:52,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11267 to 11241. [2022-07-22 18:14:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11241 states, 11236 states have (on average 1.439747241011036) internal successors, (16177), 11240 states have internal predecessors, (16177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11241 states to 11241 states and 16177 transitions. [2022-07-22 18:14:52,262 INFO L78 Accepts]: Start accepts. Automaton has 11241 states and 16177 transitions. Word has length 140 [2022-07-22 18:14:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:52,262 INFO L495 AbstractCegarLoop]: Abstraction has 11241 states and 16177 transitions. [2022-07-22 18:14:52,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:52,263 INFO L276 IsEmpty]: Start isEmpty. Operand 11241 states and 16177 transitions. [2022-07-22 18:14:52,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 18:14:52,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:52,312 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] [2022-07-22 18:14:52,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:14:52,312 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)] === [2022-07-22 18:14:52,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash 789160347, now seen corresponding path program 1 times [2022-07-22 18:14:52,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:52,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251706219] [2022-07-22 18:14:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:52,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:52,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:52,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251706219] [2022-07-22 18:14:52,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251706219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:52,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:52,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:14:52,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885060251] [2022-07-22 18:14:52,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:52,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:14:52,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:52,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:14:52,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:14:52,477 INFO L87 Difference]: Start difference. First operand 11241 states and 16177 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:53,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:53,928 INFO L93 Difference]: Finished difference Result 22765 states and 32649 transitions. [2022-07-22 18:14:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:14:53,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-07-22 18:14:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:53,993 INFO L225 Difference]: With dead ends: 22765 [2022-07-22 18:14:53,993 INFO L226 Difference]: Without dead ends: 11641 [2022-07-22 18:14:54,018 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 [2022-07-22 18:14:54,020 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1012 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:14:54,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 1350 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:14:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11641 states. [2022-07-22 18:14:55,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11641 to 11449. [2022-07-22 18:14:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11449 states, 11444 states have (on average 1.4335022719328907) internal successors, (16405), 11448 states have internal predecessors, (16405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11449 states to 11449 states and 16405 transitions. [2022-07-22 18:14:55,690 INFO L78 Accepts]: Start accepts. Automaton has 11449 states and 16405 transitions. Word has length 140 [2022-07-22 18:14:55,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:55,690 INFO L495 AbstractCegarLoop]: Abstraction has 11449 states and 16405 transitions. [2022-07-22 18:14:55,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:55,690 INFO L276 IsEmpty]: Start isEmpty. Operand 11449 states and 16405 transitions. [2022-07-22 18:14:55,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-22 18:14:55,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:55,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:14:55,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:14:55,720 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)] === [2022-07-22 18:14:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 342663311, now seen corresponding path program 1 times [2022-07-22 18:14:55,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:55,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802454085] [2022-07-22 18:14:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:55,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:55,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:55,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802454085] [2022-07-22 18:14:55,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802454085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:55,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:55,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:14:55,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003738531] [2022-07-22 18:14:55,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:55,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:14:55,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:55,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:14:55,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:14:55,787 INFO L87 Difference]: Start difference. First operand 11449 states and 16405 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:14:57,705 INFO L93 Difference]: Finished difference Result 33657 states and 48337 transitions. [2022-07-22 18:14:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:14:57,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-07-22 18:14:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:14:57,805 INFO L225 Difference]: With dead ends: 33657 [2022-07-22 18:14:57,811 INFO L226 Difference]: Without dead ends: 22773 [2022-07-22 18:14:57,848 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 [2022-07-22 18:14:57,862 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 481 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1509 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 [2022-07-22 18:14:57,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1509 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:14:57,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22773 states. [2022-07-22 18:14:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22773 to 11465. [2022-07-22 18:14:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11465 states, 11460 states have (on average 1.4328970331588133) internal successors, (16421), 11464 states have internal predecessors, (16421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:59,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11465 states to 11465 states and 16421 transitions. [2022-07-22 18:14:59,163 INFO L78 Accepts]: Start accepts. Automaton has 11465 states and 16421 transitions. Word has length 141 [2022-07-22 18:14:59,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:14:59,163 INFO L495 AbstractCegarLoop]: Abstraction has 11465 states and 16421 transitions. [2022-07-22 18:14:59,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:14:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 11465 states and 16421 transitions. [2022-07-22 18:14:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 18:14:59,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:14:59,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:14:59,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:14:59,191 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)] === [2022-07-22 18:14:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:14:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1600293435, now seen corresponding path program 1 times [2022-07-22 18:14:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:14:59,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766978280] [2022-07-22 18:14:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:14:59,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:14:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:14:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:14:59,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:14:59,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766978280] [2022-07-22 18:14:59,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766978280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:14:59,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:14:59,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:14:59,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933605432] [2022-07-22 18:14:59,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:14:59,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:14:59,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:14:59,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:14:59,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:14:59,384 INFO L87 Difference]: Start difference. First operand 11465 states and 16421 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:15:01,324 INFO L93 Difference]: Finished difference Result 31020 states and 44204 transitions. [2022-07-22 18:15:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:15:01,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-07-22 18:15:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:15:01,409 INFO L225 Difference]: With dead ends: 31020 [2022-07-22 18:15:01,409 INFO L226 Difference]: Without dead ends: 19672 [2022-07-22 18:15:01,444 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 [2022-07-22 18:15:01,445 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 961 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:15:01,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 1814 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:15:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19672 states. [2022-07-22 18:15:03,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19672 to 19620. [2022-07-22 18:15:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19620 states, 19615 states have (on average 1.4026000509813918) internal successors, (27512), 19619 states have internal predecessors, (27512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19620 states to 19620 states and 27512 transitions. [2022-07-22 18:15:03,348 INFO L78 Accepts]: Start accepts. Automaton has 19620 states and 27512 transitions. Word has length 142 [2022-07-22 18:15:03,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:15:03,351 INFO L495 AbstractCegarLoop]: Abstraction has 19620 states and 27512 transitions. [2022-07-22 18:15:03,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 19620 states and 27512 transitions. [2022-07-22 18:15:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 18:15:03,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:15:03,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:15:03,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:15:03,379 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)] === [2022-07-22 18:15:03,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:15:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash 565199964, now seen corresponding path program 1 times [2022-07-22 18:15:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:15:03,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245073621] [2022-07-22 18:15:03,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:15:03,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:15:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:15:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:15:03,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:15:03,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245073621] [2022-07-22 18:15:03,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245073621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:15:03,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:15:03,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:15:03,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700986785] [2022-07-22 18:15:03,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:15:03,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:15:03,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:15:03,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:15:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:15:03,540 INFO L87 Difference]: Start difference. First operand 19620 states and 27512 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:15:05,685 INFO L93 Difference]: Finished difference Result 36383 states and 51043 transitions. [2022-07-22 18:15:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:15:05,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-07-22 18:15:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:15:05,713 INFO L225 Difference]: With dead ends: 36383 [2022-07-22 18:15:05,713 INFO L226 Difference]: Without dead ends: 16854 [2022-07-22 18:15:05,740 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 [2022-07-22 18:15:05,741 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 65 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1591 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 [2022-07-22 18:15:05,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1591 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:15:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16854 states. [2022-07-22 18:15:07,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16854 to 16854. [2022-07-22 18:15:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16854 states, 16849 states have (on average 1.4035254317763666) internal successors, (23648), 16853 states have internal predecessors, (23648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16854 states to 16854 states and 23648 transitions. [2022-07-22 18:15:07,376 INFO L78 Accepts]: Start accepts. Automaton has 16854 states and 23648 transitions. Word has length 142 [2022-07-22 18:15:07,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:15:07,376 INFO L495 AbstractCegarLoop]: Abstraction has 16854 states and 23648 transitions. [2022-07-22 18:15:07,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:07,376 INFO L276 IsEmpty]: Start isEmpty. Operand 16854 states and 23648 transitions. [2022-07-22 18:15:07,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 18:15:07,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:15:07,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:15:07,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:15:07,391 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:15:07,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:15:07,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1734417187, now seen corresponding path program 1 times [2022-07-22 18:15:07,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:15:07,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402652058] [2022-07-22 18:15:07,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:15:07,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:15:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:15:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:15:07,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:15:07,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402652058] [2022-07-22 18:15:07,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402652058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:15:07,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:15:07,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:15:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081029157] [2022-07-22 18:15:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:15:07,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:15:07,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:15:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:15:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:15:07,511 INFO L87 Difference]: Start difference. First operand 16854 states and 23648 transitions. Second operand has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:15:14,509 INFO L93 Difference]: Finished difference Result 58721 states and 87936 transitions. [2022-07-22 18:15:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 18:15:14,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-07-22 18:15:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:15:14,593 INFO L225 Difference]: With dead ends: 58721 [2022-07-22 18:15:14,593 INFO L226 Difference]: Without dead ends: 45414 [2022-07-22 18:15:14,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-07-22 18:15:14,614 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 5328 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5328 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 18:15:14,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5328 Valid, 2208 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 18:15:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45414 states. [2022-07-22 18:15:18,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45414 to 29254. [2022-07-22 18:15:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29254 states, 29249 states have (on average 1.464118431399364) internal successors, (42824), 29253 states have internal predecessors, (42824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29254 states to 29254 states and 42824 transitions. [2022-07-22 18:15:18,532 INFO L78 Accepts]: Start accepts. Automaton has 29254 states and 42824 transitions. Word has length 145 [2022-07-22 18:15:18,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:15:18,532 INFO L495 AbstractCegarLoop]: Abstraction has 29254 states and 42824 transitions. [2022-07-22 18:15:18,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.11111111111111) internal successors, (145), 8 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 29254 states and 42824 transitions. [2022-07-22 18:15:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 18:15:18,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:15:18,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:15:18,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:15:18,574 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:15:18,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:15:18,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2040052853, now seen corresponding path program 1 times [2022-07-22 18:15:18,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:15:18,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830795533] [2022-07-22 18:15:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:15:18,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:15:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:15:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:15:18,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:15:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830795533] [2022-07-22 18:15:18,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830795533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:15:18,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:15:18,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:15:18,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626554340] [2022-07-22 18:15:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:15:18,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:15:18,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:15:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:15:18,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:15:18,734 INFO L87 Difference]: Start difference. First operand 29254 states and 42824 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:15:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:15:24,838 INFO L93 Difference]: Finished difference Result 72125 states and 105177 transitions. [2022-07-22 18:15:24,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:15:24,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-07-22 18:15:24,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:15:24,910 INFO L225 Difference]: With dead ends: 72125 [2022-07-22 18:15:24,910 INFO L226 Difference]: Without dead ends: 43186 [2022-07-22 18:15:24,955 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 [2022-07-22 18:15:24,957 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 1048 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:15:24,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1292 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:15:25,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43186 states.