./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.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 cc839390ce90c7793a3060b323c83e9a1c067374beb1721b491d5c2fbf639881 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 06:15:18,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:15:18,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:15:18,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:15:18,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:15:18,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:15:18,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:15:18,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:15:18,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:15:18,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:15:18,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:15:18,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:15:18,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:15:18,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:15:18,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:15:18,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:15:18,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:15:18,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:15:18,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:15:18,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:15:18,409 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:15:18,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:15:18,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:15:18,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:15:18,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:15:18,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:15:18,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:15:18,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:15:18,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:15:18,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:15:18,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:15:18,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:15:18,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:15:18,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:15:18,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:15:18,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:15:18,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:15:18,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:15:18,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:15:18,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:15:18,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:15:18,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:15:18,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:15:18,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:15:18,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:15:18,470 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:15:18,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:15:18,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:15:18,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:15:18,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:15:18,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:15:18,473 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:15:18,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:15:18,474 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:15:18,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:15:18,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:15:18,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:15:18,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:15:18,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:15:18,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:15:18,475 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:15:18,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:15:18,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:15:18,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:15:18,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:15:18,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:15:18,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:15:18,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:15:18,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:15:18,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:15:18,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:15:18,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:15:18,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:15:18,478 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:15:18,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:15:18,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:15:18,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc839390ce90c7793a3060b323c83e9a1c067374beb1721b491d5c2fbf639881 [2022-07-21 06:15:18,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:15:18,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:15:18,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:15:18,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:15:18,845 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:15:18,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-21 06:15:18,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cce77674/ac079db705204bd5ae24d8e57ad73603/FLAGc736dacbb [2022-07-21 06:15:19,426 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:15:19,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-21 06:15:19,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cce77674/ac079db705204bd5ae24d8e57ad73603/FLAGc736dacbb [2022-07-21 06:15:19,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cce77674/ac079db705204bd5ae24d8e57ad73603 [2022-07-21 06:15:19,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:15:19,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:15:19,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:15:19,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:15:19,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:15:19,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:15:19" (1/1) ... [2022-07-21 06:15:19,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245b9f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:19, skipping insertion in model container [2022-07-21 06:15:19,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:15:19" (1/1) ... [2022-07-21 06:15:19,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:15:19,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:15:20,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15613,15626] [2022-07-21 06:15:20,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16673,16686] [2022-07-21 06:15:20,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28981,28994] [2022-07-21 06:15:20,242 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[29628,29641] [2022-07-21 06:15:20,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[30969,30982] [2022-07-21 06:15:20,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:15:20,298 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:15:20,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15613,15626] [2022-07-21 06:15:20,470 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[16673,16686] [2022-07-21 06:15:20,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28981,28994] [2022-07-21 06:15:20,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[29628,29641] [2022-07-21 06:15:20,606 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[30969,30982] [2022-07-21 06:15:20,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:15:20,639 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:15:20,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20 WrapperNode [2022-07-21 06:15:20,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:15:20,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:15:20,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:15:20,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:15:20,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,746 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1689 [2022-07-21 06:15:20,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:15:20,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:15:20,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:15:20,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:15:20,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:15:20,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:15:20,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:15:20,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:15:20,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (1/1) ... [2022-07-21 06:15:20,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:15:20,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:15:20,889 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) [2022-07-21 06:15:20,914 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 [2022-07-21 06:15:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:15:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:15:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:15:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:15:21,110 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:15:21,112 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:15:22,232 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:15:22,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:15:22,243 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 06:15:22,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:15:22 BoogieIcfgContainer [2022-07-21 06:15:22,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:15:22,247 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:15:22,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:15:22,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:15:22,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:15:19" (1/3) ... [2022-07-21 06:15:22,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e78de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:15:22, skipping insertion in model container [2022-07-21 06:15:22,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:15:20" (2/3) ... [2022-07-21 06:15:22,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e78de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:15:22, skipping insertion in model container [2022-07-21 06:15:22,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:15:22" (3/3) ... [2022-07-21 06:15:22,253 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-21 06:15:22,265 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:15:22,266 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-07-21 06:15:22,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:15:22,324 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@6d0307e6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70e5440a [2022-07-21 06:15:22,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-21 06:15:22,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 413 states, 407 states have (on average 1.805896805896806) internal successors, (735), 412 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-21 06:15:22,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:22,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:22,348 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)] === [2022-07-21 06:15:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash -969410714, now seen corresponding path program 1 times [2022-07-21 06:15:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:22,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674449335] [2022-07-21 06:15:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:22,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:22,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:22,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674449335] [2022-07-21 06:15:22,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674449335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:22,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:22,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:15:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308490619] [2022-07-21 06:15:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:22,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:15:22,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:22,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:15:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:15:22,913 INFO L87 Difference]: Start difference. First operand has 413 states, 407 states have (on average 1.805896805896806) internal successors, (735), 412 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:23,138 INFO L93 Difference]: Finished difference Result 742 states and 1300 transitions. [2022-07-21 06:15:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:15:23,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-21 06:15:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:23,162 INFO L225 Difference]: With dead ends: 742 [2022-07-21 06:15:23,162 INFO L226 Difference]: Without dead ends: 595 [2022-07-21 06:15:23,167 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 [2022-07-21 06:15:23,170 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 461 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:23,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1147 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:15:23,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-07-21 06:15:23,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 593. [2022-07-21 06:15:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 588 states have (on average 1.4829931972789117) internal successors, (872), 592 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 872 transitions. [2022-07-21 06:15:23,285 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 872 transitions. Word has length 148 [2022-07-21 06:15:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:23,285 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 872 transitions. [2022-07-21 06:15:23,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 872 transitions. [2022-07-21 06:15:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-21 06:15:23,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:23,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:23,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 06:15:23,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 06:15:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1257328890, now seen corresponding path program 1 times [2022-07-21 06:15:23,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:23,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315136543] [2022-07-21 06:15:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:23,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:23,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:23,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315136543] [2022-07-21 06:15:23,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315136543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:23,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:23,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:15:23,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425049723] [2022-07-21 06:15:23,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:23,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:15:23,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:23,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:15:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:15:23,505 INFO L87 Difference]: Start difference. First operand 593 states and 872 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:23,665 INFO L93 Difference]: Finished difference Result 1733 states and 2539 transitions. [2022-07-21 06:15:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:15:23,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-21 06:15:23,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:23,671 INFO L225 Difference]: With dead ends: 1733 [2022-07-21 06:15:23,672 INFO L226 Difference]: Without dead ends: 1149 [2022-07-21 06:15:23,675 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 [2022-07-21 06:15:23,676 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 1262 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:23,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 1492 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:15:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-07-21 06:15:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1123. [2022-07-21 06:15:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1118 states have (on average 1.4695885509838997) internal successors, (1643), 1122 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:23,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1643 transitions. [2022-07-21 06:15:23,768 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1643 transitions. Word has length 148 [2022-07-21 06:15:23,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:23,768 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1643 transitions. [2022-07-21 06:15:23,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1643 transitions. [2022-07-21 06:15:23,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 06:15:23,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:23,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:23,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 06:15:23,775 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)] === [2022-07-21 06:15:23,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash 56469786, now seen corresponding path program 1 times [2022-07-21 06:15:23,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:23,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808090829] [2022-07-21 06:15:23,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:23,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:23,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:23,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808090829] [2022-07-21 06:15:23,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808090829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:23,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:23,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:15:23,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293858947] [2022-07-21 06:15:23,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:23,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:15:23,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:23,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:15:23,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:15:23,828 INFO L87 Difference]: Start difference. First operand 1123 states and 1643 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:23,967 INFO L93 Difference]: Finished difference Result 3331 states and 4867 transitions. [2022-07-21 06:15:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:15:23,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-07-21 06:15:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:23,978 INFO L225 Difference]: With dead ends: 3331 [2022-07-21 06:15:23,978 INFO L226 Difference]: Without dead ends: 2236 [2022-07-21 06:15:23,982 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 [2022-07-21 06:15:23,985 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 580 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1369 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 [2022-07-21 06:15:23,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1369 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:23,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-07-21 06:15:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1125. [2022-07-21 06:15:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1120 states have (on average 1.46875) internal successors, (1645), 1124 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:24,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1645 transitions. [2022-07-21 06:15:24,106 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1645 transitions. Word has length 149 [2022-07-21 06:15:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:24,107 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1645 transitions. [2022-07-21 06:15:24,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1645 transitions. [2022-07-21 06:15:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 06:15:24,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:24,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:24,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 06:15:24,116 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)] === [2022-07-21 06:15:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:24,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1493517127, now seen corresponding path program 1 times [2022-07-21 06:15:24,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:24,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40958593] [2022-07-21 06:15:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:24,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:24,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:24,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40958593] [2022-07-21 06:15:24,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40958593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:24,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:24,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:15:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31976351] [2022-07-21 06:15:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:24,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:15:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:15:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:15:24,346 INFO L87 Difference]: Start difference. First operand 1125 states and 1645 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:24,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:24,588 INFO L93 Difference]: Finished difference Result 3257 states and 4739 transitions. [2022-07-21 06:15:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:15:24,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-07-21 06:15:24,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:24,597 INFO L225 Difference]: With dead ends: 3257 [2022-07-21 06:15:24,597 INFO L226 Difference]: Without dead ends: 2162 [2022-07-21 06:15:24,599 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 [2022-07-21 06:15:24,606 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 1235 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1494 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 [2022-07-21 06:15:24,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1494 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:15:24,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2022-07-21 06:15:24,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2136. [2022-07-21 06:15:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2136 states, 2131 states have (on average 1.4514312529328954) internal successors, (3093), 2135 states have internal predecessors, (3093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3093 transitions. [2022-07-21 06:15:24,771 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3093 transitions. Word has length 150 [2022-07-21 06:15:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:24,772 INFO L495 AbstractCegarLoop]: Abstraction has 2136 states and 3093 transitions. [2022-07-21 06:15:24,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3093 transitions. [2022-07-21 06:15:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 06:15:24,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:24,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:24,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 06:15:24,776 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)] === [2022-07-21 06:15:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:24,776 INFO L85 PathProgramCache]: Analyzing trace with hash 403786939, now seen corresponding path program 1 times [2022-07-21 06:15:24,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:24,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494834727] [2022-07-21 06:15:24,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:24,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:24,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:24,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494834727] [2022-07-21 06:15:24,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494834727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:24,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:24,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:15:24,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698875861] [2022-07-21 06:15:24,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:24,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:15:24,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:15:24,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:15:24,833 INFO L87 Difference]: Start difference. First operand 2136 states and 3093 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:25,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:25,197 INFO L93 Difference]: Finished difference Result 6332 states and 9159 transitions. [2022-07-21 06:15:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:15:25,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-07-21 06:15:25,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:25,215 INFO L225 Difference]: With dead ends: 6332 [2022-07-21 06:15:25,215 INFO L226 Difference]: Without dead ends: 4240 [2022-07-21 06:15:25,222 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 [2022-07-21 06:15:25,224 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 566 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1736 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 [2022-07-21 06:15:25,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1736 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:25,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4240 states. [2022-07-21 06:15:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4240 to 2140. [2022-07-21 06:15:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2135 states have (on average 1.4505854800936768) internal successors, (3097), 2139 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 3097 transitions. [2022-07-21 06:15:25,484 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 3097 transitions. Word has length 151 [2022-07-21 06:15:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:25,485 INFO L495 AbstractCegarLoop]: Abstraction has 2140 states and 3097 transitions. [2022-07-21 06:15:25,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:25,485 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 3097 transitions. [2022-07-21 06:15:25,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 06:15:25,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:25,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:25,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 06:15:25,494 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)] === [2022-07-21 06:15:25,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:25,495 INFO L85 PathProgramCache]: Analyzing trace with hash -865780987, now seen corresponding path program 1 times [2022-07-21 06:15:25,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:25,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945141114] [2022-07-21 06:15:25,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:25,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:25,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:25,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945141114] [2022-07-21 06:15:25,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945141114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:25,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:25,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:15:25,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815847818] [2022-07-21 06:15:25,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:25,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:15:25,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:15:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:15:25,553 INFO L87 Difference]: Start difference. First operand 2140 states and 3097 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:25,958 INFO L93 Difference]: Finished difference Result 5573 states and 8064 transitions. [2022-07-21 06:15:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:15:25,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-07-21 06:15:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:25,972 INFO L225 Difference]: With dead ends: 5573 [2022-07-21 06:15:25,972 INFO L226 Difference]: Without dead ends: 3769 [2022-07-21 06:15:25,975 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 [2022-07-21 06:15:25,976 INFO L413 NwaCegarLoop]: 1116 mSDtfsCounter, 506 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:25,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1661 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2022-07-21 06:15:26,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3743. [2022-07-21 06:15:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3743 states, 3738 states have (on average 1.4285714285714286) internal successors, (5340), 3742 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:26,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3743 states to 3743 states and 5340 transitions. [2022-07-21 06:15:26,338 INFO L78 Accepts]: Start accepts. Automaton has 3743 states and 5340 transitions. Word has length 152 [2022-07-21 06:15:26,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:26,339 INFO L495 AbstractCegarLoop]: Abstraction has 3743 states and 5340 transitions. [2022-07-21 06:15:26,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:26,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3743 states and 5340 transitions. [2022-07-21 06:15:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 06:15:26,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:26,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:26,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 06:15:26,345 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)] === [2022-07-21 06:15:26,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:26,345 INFO L85 PathProgramCache]: Analyzing trace with hash 471058402, now seen corresponding path program 1 times [2022-07-21 06:15:26,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:26,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843948964] [2022-07-21 06:15:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:26,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:26,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:26,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843948964] [2022-07-21 06:15:26,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843948964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:26,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:26,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:15:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271146715] [2022-07-21 06:15:26,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:26,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:15:26,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:26,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:15:26,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:15:26,470 INFO L87 Difference]: Start difference. First operand 3743 states and 5340 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:27,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:27,180 INFO L93 Difference]: Finished difference Result 10650 states and 15175 transitions. [2022-07-21 06:15:27,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:15:27,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-07-21 06:15:27,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:27,206 INFO L225 Difference]: With dead ends: 10650 [2022-07-21 06:15:27,207 INFO L226 Difference]: Without dead ends: 6944 [2022-07-21 06:15:27,213 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 [2022-07-21 06:15:27,213 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1720 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:27,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 1524 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:15:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6944 states. [2022-07-21 06:15:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6944 to 6923. [2022-07-21 06:15:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6923 states, 6918 states have (on average 1.413847932928592) internal successors, (9781), 6922 states have internal predecessors, (9781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6923 states to 6923 states and 9781 transitions. [2022-07-21 06:15:27,973 INFO L78 Accepts]: Start accepts. Automaton has 6923 states and 9781 transitions. Word has length 152 [2022-07-21 06:15:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:27,974 INFO L495 AbstractCegarLoop]: Abstraction has 6923 states and 9781 transitions. [2022-07-21 06:15:27,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6923 states and 9781 transitions. [2022-07-21 06:15:27,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 06:15:27,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:27,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:27,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 06:15:27,987 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)] === [2022-07-21 06:15:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:27,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1318458360, now seen corresponding path program 1 times [2022-07-21 06:15:27,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:27,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503281721] [2022-07-21 06:15:27,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:27,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:28,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:28,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503281721] [2022-07-21 06:15:28,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503281721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:28,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:28,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:15:28,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606138941] [2022-07-21 06:15:28,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:28,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:15:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:28,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:15:28,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:15:28,096 INFO L87 Difference]: Start difference. First operand 6923 states and 9781 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:28,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:28,797 INFO L93 Difference]: Finished difference Result 14142 states and 19881 transitions. [2022-07-21 06:15:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:15:28,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-07-21 06:15:28,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:28,825 INFO L225 Difference]: With dead ends: 14142 [2022-07-21 06:15:28,825 INFO L226 Difference]: Without dead ends: 7336 [2022-07-21 06:15:28,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:15:28,836 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 1162 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:28,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 1540 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7336 states. [2022-07-21 06:15:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7336 to 7151. [2022-07-21 06:15:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7151 states, 7146 states have (on average 1.4045619927232018) internal successors, (10037), 7150 states have internal predecessors, (10037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 10037 transitions. [2022-07-21 06:15:29,505 INFO L78 Accepts]: Start accepts. Automaton has 7151 states and 10037 transitions. Word has length 152 [2022-07-21 06:15:29,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:29,505 INFO L495 AbstractCegarLoop]: Abstraction has 7151 states and 10037 transitions. [2022-07-21 06:15:29,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7151 states and 10037 transitions. [2022-07-21 06:15:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-21 06:15:29,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:29,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:29,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 06:15:29,515 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)] === [2022-07-21 06:15:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash -756425508, now seen corresponding path program 1 times [2022-07-21 06:15:29,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:29,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061352725] [2022-07-21 06:15:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:29,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:29,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:29,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061352725] [2022-07-21 06:15:29,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061352725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:29,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:29,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:15:29,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467542187] [2022-07-21 06:15:29,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:29,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:15:29,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:29,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:15:29,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:15:29,554 INFO L87 Difference]: Start difference. First operand 7151 states and 10037 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:30,623 INFO L93 Difference]: Finished difference Result 20719 states and 29169 transitions. [2022-07-21 06:15:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:15:30,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-07-21 06:15:30,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:30,658 INFO L225 Difference]: With dead ends: 20719 [2022-07-21 06:15:30,659 INFO L226 Difference]: Without dead ends: 14177 [2022-07-21 06:15:30,674 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 [2022-07-21 06:15:30,675 INFO L413 NwaCegarLoop]: 1140 mSDtfsCounter, 552 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1722 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 [2022-07-21 06:15:30,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1722 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:30,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14177 states. [2022-07-21 06:15:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14177 to 7167. [2022-07-21 06:15:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 7162 states have (on average 1.4036581960346273) internal successors, (10053), 7166 states have internal predecessors, (10053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10053 transitions. [2022-07-21 06:15:31,480 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10053 transitions. Word has length 153 [2022-07-21 06:15:31,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:31,480 INFO L495 AbstractCegarLoop]: Abstraction has 7167 states and 10053 transitions. [2022-07-21 06:15:31,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:31,481 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10053 transitions. [2022-07-21 06:15:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 06:15:31,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:31,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:31,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 06:15:31,491 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)] === [2022-07-21 06:15:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1459255993, now seen corresponding path program 1 times [2022-07-21 06:15:31,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:31,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231920989] [2022-07-21 06:15:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:31,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:31,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:31,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231920989] [2022-07-21 06:15:31,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231920989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:31,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:31,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:15:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914126180] [2022-07-21 06:15:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:31,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:15:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:15:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:15:31,639 INFO L87 Difference]: Start difference. First operand 7167 states and 10053 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:33,009 INFO L93 Difference]: Finished difference Result 20866 states and 29140 transitions. [2022-07-21 06:15:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:15:33,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-07-21 06:15:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:33,042 INFO L225 Difference]: With dead ends: 20866 [2022-07-21 06:15:33,043 INFO L226 Difference]: Without dead ends: 13816 [2022-07-21 06:15:33,060 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 [2022-07-21 06:15:33,061 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 1744 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:33,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1744 Valid, 1542 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:15:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13816 states. [2022-07-21 06:15:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13816 to 13786. [2022-07-21 06:15:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13786 states, 13781 states have (on average 1.3821928742471519) internal successors, (19048), 13785 states have internal predecessors, (19048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13786 states to 13786 states and 19048 transitions. [2022-07-21 06:15:34,308 INFO L78 Accepts]: Start accepts. Automaton has 13786 states and 19048 transitions. Word has length 154 [2022-07-21 06:15:34,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:34,308 INFO L495 AbstractCegarLoop]: Abstraction has 13786 states and 19048 transitions. [2022-07-21 06:15:34,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:34,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13786 states and 19048 transitions. [2022-07-21 06:15:34,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 06:15:34,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:34,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:34,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 06:15:34,328 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)] === [2022-07-21 06:15:34,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:34,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2098194761, now seen corresponding path program 1 times [2022-07-21 06:15:34,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:34,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930579603] [2022-07-21 06:15:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:34,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:34,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:34,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930579603] [2022-07-21 06:15:34,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930579603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:34,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:34,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:15:34,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316363343] [2022-07-21 06:15:34,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:34,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:15:34,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:34,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:15:34,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:15:34,445 INFO L87 Difference]: Start difference. First operand 13786 states and 19048 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:35,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:35,421 INFO L93 Difference]: Finished difference Result 24262 states and 33508 transitions. [2022-07-21 06:15:35,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:15:35,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-07-21 06:15:35,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:35,446 INFO L225 Difference]: With dead ends: 24262 [2022-07-21 06:15:35,447 INFO L226 Difference]: Without dead ends: 10567 [2022-07-21 06:15:35,470 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 [2022-07-21 06:15:35,471 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 65 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1804 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 [2022-07-21 06:15:35,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1804 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:35,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2022-07-21 06:15:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 10567. [2022-07-21 06:15:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10567 states, 10562 states have (on average 1.3801363378148077) internal successors, (14577), 10566 states have internal predecessors, (14577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 14577 transitions. [2022-07-21 06:15:36,400 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 14577 transitions. Word has length 154 [2022-07-21 06:15:36,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:36,401 INFO L495 AbstractCegarLoop]: Abstraction has 10567 states and 14577 transitions. [2022-07-21 06:15:36,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 14577 transitions. [2022-07-21 06:15:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 06:15:36,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:36,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:36,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 06:15:36,418 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)] === [2022-07-21 06:15:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:36,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2135177219, now seen corresponding path program 1 times [2022-07-21 06:15:36,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:36,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110392178] [2022-07-21 06:15:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:36,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:36,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:36,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110392178] [2022-07-21 06:15:36,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110392178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:36,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:36,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:15:36,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54734078] [2022-07-21 06:15:36,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:36,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:15:36,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:36,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:15:36,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:15:36,463 INFO L87 Difference]: Start difference. First operand 10567 states and 14577 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:37,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:37,691 INFO L93 Difference]: Finished difference Result 24469 states and 34596 transitions. [2022-07-21 06:15:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:15:37,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-07-21 06:15:37,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:37,721 INFO L225 Difference]: With dead ends: 24469 [2022-07-21 06:15:37,721 INFO L226 Difference]: Without dead ends: 15072 [2022-07-21 06:15:37,737 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 [2022-07-21 06:15:37,738 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 307 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:37,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1240 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:37,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15072 states. [2022-07-21 06:15:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15072 to 13229. [2022-07-21 06:15:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13229 states, 13224 states have (on average 1.4232456140350878) internal successors, (18821), 13228 states have internal predecessors, (18821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13229 states to 13229 states and 18821 transitions. [2022-07-21 06:15:38,872 INFO L78 Accepts]: Start accepts. Automaton has 13229 states and 18821 transitions. Word has length 156 [2022-07-21 06:15:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:38,873 INFO L495 AbstractCegarLoop]: Abstraction has 13229 states and 18821 transitions. [2022-07-21 06:15:38,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 13229 states and 18821 transitions. [2022-07-21 06:15:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-21 06:15:38,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:38,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:38,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 06:15:38,887 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 06:15:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 787037030, now seen corresponding path program 1 times [2022-07-21 06:15:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:38,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849248082] [2022-07-21 06:15:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:38,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:38,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:38,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849248082] [2022-07-21 06:15:38,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849248082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:38,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:38,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:15:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415315892] [2022-07-21 06:15:38,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:15:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:15:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:15:38,940 INFO L87 Difference]: Start difference. First operand 13229 states and 18821 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:40,898 INFO L93 Difference]: Finished difference Result 28929 states and 42160 transitions. [2022-07-21 06:15:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:15:40,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2022-07-21 06:15:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:40,928 INFO L225 Difference]: With dead ends: 28929 [2022-07-21 06:15:40,928 INFO L226 Difference]: Without dead ends: 18979 [2022-07-21 06:15:40,945 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 [2022-07-21 06:15:40,945 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 336 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:40,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1238 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18979 states. [2022-07-21 06:15:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18979 to 17341. [2022-07-21 06:15:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17341 states, 17336 states have (on average 1.4595639132441163) internal successors, (25303), 17340 states have internal predecessors, (25303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:42,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17341 states to 17341 states and 25303 transitions. [2022-07-21 06:15:42,559 INFO L78 Accepts]: Start accepts. Automaton has 17341 states and 25303 transitions. Word has length 158 [2022-07-21 06:15:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:42,560 INFO L495 AbstractCegarLoop]: Abstraction has 17341 states and 25303 transitions. [2022-07-21 06:15:42,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:42,560 INFO L276 IsEmpty]: Start isEmpty. Operand 17341 states and 25303 transitions. [2022-07-21 06:15:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 06:15:42,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:42,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:42,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 06:15:42,575 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 06:15:42,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:42,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1606523445, now seen corresponding path program 1 times [2022-07-21 06:15:42,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:42,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143441158] [2022-07-21 06:15:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:42,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:42,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:42,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143441158] [2022-07-21 06:15:42,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143441158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:42,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:42,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:15:42,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787016371] [2022-07-21 06:15:42,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:42,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:15:42,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:42,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:15:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:15:42,733 INFO L87 Difference]: Start difference. First operand 17341 states and 25303 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:45,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:45,392 INFO L93 Difference]: Finished difference Result 45048 states and 65700 transitions. [2022-07-21 06:15:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:15:45,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-07-21 06:15:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:45,435 INFO L225 Difference]: With dead ends: 45048 [2022-07-21 06:15:45,435 INFO L226 Difference]: Without dead ends: 28052 [2022-07-21 06:15:45,451 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 [2022-07-21 06:15:45,452 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 1152 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:45,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1517 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:15:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28052 states. [2022-07-21 06:15:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28052 to 28028. [2022-07-21 06:15:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28028 states, 28023 states have (on average 1.4390322235306712) internal successors, (40326), 28027 states have internal predecessors, (40326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:48,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28028 states to 28028 states and 40326 transitions. [2022-07-21 06:15:48,195 INFO L78 Accepts]: Start accepts. Automaton has 28028 states and 40326 transitions. Word has length 159 [2022-07-21 06:15:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:48,195 INFO L495 AbstractCegarLoop]: Abstraction has 28028 states and 40326 transitions. [2022-07-21 06:15:48,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:48,195 INFO L276 IsEmpty]: Start isEmpty. Operand 28028 states and 40326 transitions. [2022-07-21 06:15:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 06:15:48,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:48,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:48,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 06:15:48,210 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 06:15:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash 883442860, now seen corresponding path program 1 times [2022-07-21 06:15:48,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:48,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341157993] [2022-07-21 06:15:48,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:48,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:48,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341157993] [2022-07-21 06:15:48,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341157993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:48,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:48,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:15:48,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067740641] [2022-07-21 06:15:48,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:48,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:15:48,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:15:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:15:48,303 INFO L87 Difference]: Start difference. First operand 28028 states and 40326 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:50,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:50,449 INFO L93 Difference]: Finished difference Result 44477 states and 64087 transitions. [2022-07-21 06:15:50,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:15:50,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-07-21 06:15:50,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:50,486 INFO L225 Difference]: With dead ends: 44477 [2022-07-21 06:15:50,486 INFO L226 Difference]: Without dead ends: 22873 [2022-07-21 06:15:50,503 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 [2022-07-21 06:15:50,504 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 53 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:50,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1775 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22873 states. [2022-07-21 06:15:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22873 to 22873. [2022-07-21 06:15:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22873 states, 22868 states have (on average 1.4361553262200455) internal successors, (32842), 22872 states have internal predecessors, (32842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22873 states to 22873 states and 32842 transitions. [2022-07-21 06:15:52,669 INFO L78 Accepts]: Start accepts. Automaton has 22873 states and 32842 transitions. Word has length 161 [2022-07-21 06:15:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:52,670 INFO L495 AbstractCegarLoop]: Abstraction has 22873 states and 32842 transitions. [2022-07-21 06:15:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 22873 states and 32842 transitions. [2022-07-21 06:15:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-21 06:15:52,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:52,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:52,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 06:15:52,681 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 06:15:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash -424216235, now seen corresponding path program 1 times [2022-07-21 06:15:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:52,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911557611] [2022-07-21 06:15:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:52,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:52,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:52,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911557611] [2022-07-21 06:15:52,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911557611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:52,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:52,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:15:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314464535] [2022-07-21 06:15:52,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:52,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:15:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:15:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:15:52,734 INFO L87 Difference]: Start difference. First operand 22873 states and 32842 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:15:55,932 INFO L93 Difference]: Finished difference Result 52067 states and 76255 transitions. [2022-07-21 06:15:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:15:55,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-07-21 06:15:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:15:55,983 INFO L225 Difference]: With dead ends: 52067 [2022-07-21 06:15:55,983 INFO L226 Difference]: Without dead ends: 34271 [2022-07-21 06:15:56,010 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 [2022-07-21 06:15:56,011 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 303 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:15:56,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1219 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:15:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34271 states. [2022-07-21 06:15:59,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34271 to 31753. [2022-07-21 06:15:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31753 states, 31748 states have (on average 1.4697618747637646) internal successors, (46662), 31752 states have internal predecessors, (46662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31753 states to 31753 states and 46662 transitions. [2022-07-21 06:15:59,500 INFO L78 Accepts]: Start accepts. Automaton has 31753 states and 46662 transitions. Word has length 165 [2022-07-21 06:15:59,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:15:59,501 INFO L495 AbstractCegarLoop]: Abstraction has 31753 states and 46662 transitions. [2022-07-21 06:15:59,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:15:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 31753 states and 46662 transitions. [2022-07-21 06:15:59,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-21 06:15:59,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:15:59,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:15:59,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 06:15:59,510 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-21 06:15:59,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:15:59,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1525395194, now seen corresponding path program 1 times [2022-07-21 06:15:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:15:59,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908664561] [2022-07-21 06:15:59,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:15:59,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:15:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:15:59,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:15:59,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:15:59,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908664561] [2022-07-21 06:15:59,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908664561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:15:59,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:15:59,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 06:15:59,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344164219] [2022-07-21 06:15:59,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:15:59,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 06:15:59,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:15:59,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 06:15:59,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 06:15:59,720 INFO L87 Difference]: Start difference. First operand 31753 states and 46662 transitions. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 06:16:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:18,369 INFO L93 Difference]: Finished difference Result 154377 states and 231123 transitions. [2022-07-21 06:16:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 06:16:18,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 8 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-07-21 06:16:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:18,771 INFO L225 Difference]: With dead ends: 154377 [2022-07-21 06:16:18,772 INFO L226 Difference]: Without dead ends: 126451 [2022-07-21 06:16:18,903 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 [2022-07-21 06:16:18,907 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 5919 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5919 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:18,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5919 Valid, 2710 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 06:16:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126451 states.