./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46dda72cbacea7804179bc67e21a7607713ae67e303b365119c911cce7c0e646 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:13:08,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:13:08,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:13:08,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:13:08,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:13:08,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:13:08,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:13:08,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:13:08,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:13:08,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:13:08,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:13:08,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:13:08,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:13:08,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:13:08,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:13:08,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:13:08,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:13:08,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:13:08,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:13:08,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:13:08,399 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:13:08,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:13:08,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:13:08,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:13:08,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:13:08,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:13:08,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:13:08,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:13:08,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:13:08,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:13:08,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:13:08,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:13:08,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:13:08,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:13:08,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:13:08,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:13:08,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:13:08,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:13:08,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:13:08,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:13:08,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:13:08,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:13:08,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:13:08,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:13:08,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:13:08,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:13:08,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:13:08,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:13:08,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:13:08,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:13:08,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:13:08,441 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:13:08,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:13:08,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:13:08,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:13:08,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:13:08,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:13:08,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:13:08,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:13:08,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:13:08,442 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:13:08,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:13:08,443 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:13:08,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:13:08,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:13:08,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:13:08,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:13:08,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:13:08,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:13:08,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:13:08,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:13:08,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:13:08,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:13:08,445 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:13:08,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:13:08,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:13:08,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46dda72cbacea7804179bc67e21a7607713ae67e303b365119c911cce7c0e646 [2022-07-12 07:13:08,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:13:08,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:13:08,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:13:08,696 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:13:08,696 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:13:08,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-07-12 07:13:08,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44193f3f7/ea2a1df015db43eca55fe8eaae2176b5/FLAGa65de9d83 [2022-07-12 07:13:09,229 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:13:09,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-07-12 07:13:09,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44193f3f7/ea2a1df015db43eca55fe8eaae2176b5/FLAGa65de9d83 [2022-07-12 07:13:09,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44193f3f7/ea2a1df015db43eca55fe8eaae2176b5 [2022-07-12 07:13:09,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:13:09,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:13:09,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:13:09,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:13:09,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:13:09,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618a29b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09, skipping insertion in model container [2022-07-12 07:13:09,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:13:09,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:13:09,508 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[6199,6212] [2022-07-12 07:13:09,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[9205,9218] [2022-07-12 07:13:09,535 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12265,12278] [2022-07-12 07:13:09,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[15172,15185] [2022-07-12 07:13:09,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[18387,18400] [2022-07-12 07:13:09,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[21499,21512] [2022-07-12 07:13:09,583 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[24550,24563] [2022-07-12 07:13:09,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:13:09,620 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:13:09,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[6199,6212] [2022-07-12 07:13:09,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[9205,9218] [2022-07-12 07:13:09,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12265,12278] [2022-07-12 07:13:09,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[15172,15185] [2022-07-12 07:13:09,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[18387,18400] [2022-07-12 07:13:09,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[21499,21512] [2022-07-12 07:13:09,715 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[24550,24563] [2022-07-12 07:13:09,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:13:09,748 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:13:09,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09 WrapperNode [2022-07-12 07:13:09,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:13:09,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:13:09,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:13:09,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:13:09,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,822 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1332 [2022-07-12 07:13:09,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:13:09,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:13:09,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:13:09,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:13:09,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:13:09,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:13:09,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:13:09,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:13:09,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (1/1) ... [2022-07-12 07:13:09,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:13:09,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:13:09,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 07:13:09,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 07:13:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:13:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:13:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:13:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:13:10,141 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:13:10,142 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:13:10,799 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:13:10,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:13:10,811 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:13:10,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:13:10 BoogieIcfgContainer [2022-07-12 07:13:10,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:13:10,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:13:10,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:13:10,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:13:10,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:13:09" (1/3) ... [2022-07-12 07:13:10,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59960ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:13:10, skipping insertion in model container [2022-07-12 07:13:10,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:13:09" (2/3) ... [2022-07-12 07:13:10,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59960ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:13:10, skipping insertion in model container [2022-07-12 07:13:10,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:13:10" (3/3) ... [2022-07-12 07:13:10,819 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-07-12 07:13:10,829 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:13:10,829 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-07-12 07:13:10,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:13:10,881 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@56dfb556, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@266eb731 [2022-07-12 07:13:10,881 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 07:13:10,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 271 states have (on average 1.7933579335793357) internal successors, (486), 278 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-12 07:13:10,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:10,894 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] [2022-07-12 07:13:10,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:10,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:10,899 INFO L85 PathProgramCache]: Analyzing trace with hash -506083603, now seen corresponding path program 1 times [2022-07-12 07:13:10,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:10,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124071309] [2022-07-12 07:13:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:10,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:11,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:11,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124071309] [2022-07-12 07:13:11,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124071309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:11,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:11,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:13:11,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215211341] [2022-07-12 07:13:11,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:11,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:13:11,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:11,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:13:11,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:13:11,229 INFO L87 Difference]: Start difference. First operand has 279 states, 271 states have (on average 1.7933579335793357) internal successors, (486), 278 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:11,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:11,502 INFO L93 Difference]: Finished difference Result 392 states and 660 transitions. [2022-07-12 07:13:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:13:11,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-07-12 07:13:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:11,511 INFO L225 Difference]: With dead ends: 392 [2022-07-12 07:13:11,511 INFO L226 Difference]: Without dead ends: 244 [2022-07-12 07:13:11,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:13:11,530 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1142 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:11,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 300 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:13:11,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-07-12 07:13:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-07-12 07:13:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 237 states have (on average 1.2658227848101267) internal successors, (300), 243 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 300 transitions. [2022-07-12 07:13:11,590 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 300 transitions. Word has length 48 [2022-07-12 07:13:11,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:11,590 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 300 transitions. [2022-07-12 07:13:11,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:11,591 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 300 transitions. [2022-07-12 07:13:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-12 07:13:11,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:11,596 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] [2022-07-12 07:13:11,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:13:11,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:11,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1206513712, now seen corresponding path program 1 times [2022-07-12 07:13:11,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:11,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126748529] [2022-07-12 07:13:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:11,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:11,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126748529] [2022-07-12 07:13:11,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126748529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:11,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:11,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:13:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157240427] [2022-07-12 07:13:11,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:11,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:13:11,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:11,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:13:11,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:13:11,702 INFO L87 Difference]: Start difference. First operand 244 states and 300 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:11,812 INFO L93 Difference]: Finished difference Result 312 states and 387 transitions. [2022-07-12 07:13:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:13:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-07-12 07:13:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:11,813 INFO L225 Difference]: With dead ends: 312 [2022-07-12 07:13:11,813 INFO L226 Difference]: Without dead ends: 186 [2022-07-12 07:13:11,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:13:11,815 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 632 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:11,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 144 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:13:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-12 07:13:11,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-07-12 07:13:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 179 states have (on average 1.2681564245810055) internal successors, (227), 185 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:11,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 227 transitions. [2022-07-12 07:13:11,824 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 227 transitions. Word has length 48 [2022-07-12 07:13:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:11,824 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 227 transitions. [2022-07-12 07:13:11,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 227 transitions. [2022-07-12 07:13:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-12 07:13:11,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:11,825 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] [2022-07-12 07:13:11,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:13:11,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:11,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash 731649800, now seen corresponding path program 1 times [2022-07-12 07:13:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:11,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091490182] [2022-07-12 07:13:11,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:11,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:11,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:11,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091490182] [2022-07-12 07:13:11,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091490182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:11,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:11,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:13:11,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813278790] [2022-07-12 07:13:11,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:11,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:13:11,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:13:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:13:11,896 INFO L87 Difference]: Start difference. First operand 186 states and 227 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:12,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:12,038 INFO L93 Difference]: Finished difference Result 354 states and 447 transitions. [2022-07-12 07:13:12,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:13:12,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-07-12 07:13:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:12,040 INFO L225 Difference]: With dead ends: 354 [2022-07-12 07:13:12,040 INFO L226 Difference]: Without dead ends: 251 [2022-07-12 07:13:12,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:13:12,044 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 786 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:12,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 199 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:13:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-12 07:13:12,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 226. [2022-07-12 07:13:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.3242009132420092) internal successors, (290), 225 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 290 transitions. [2022-07-12 07:13:12,062 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 290 transitions. Word has length 48 [2022-07-12 07:13:12,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:12,062 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 290 transitions. [2022-07-12 07:13:12,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:12,062 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 290 transitions. [2022-07-12 07:13:12,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-12 07:13:12,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:12,063 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] [2022-07-12 07:13:12,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:13:12,063 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:12,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:12,064 INFO L85 PathProgramCache]: Analyzing trace with hash 613838546, now seen corresponding path program 1 times [2022-07-12 07:13:12,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:12,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297374245] [2022-07-12 07:13:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:12,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:12,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:12,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:12,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297374245] [2022-07-12 07:13:12,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297374245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:12,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:12,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 07:13:12,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076614323] [2022-07-12 07:13:12,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:12,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 07:13:12,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:12,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 07:13:12,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:13:12,190 INFO L87 Difference]: Start difference. First operand 226 states and 290 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:12,377 INFO L93 Difference]: Finished difference Result 479 states and 630 transitions. [2022-07-12 07:13:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 07:13:12,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-07-12 07:13:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:12,379 INFO L225 Difference]: With dead ends: 479 [2022-07-12 07:13:12,379 INFO L226 Difference]: Without dead ends: 351 [2022-07-12 07:13:12,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:13:12,380 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 713 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:12,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 311 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:13:12,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-07-12 07:13:12,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 226. [2022-07-12 07:13:12,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.3196347031963471) internal successors, (289), 225 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 289 transitions. [2022-07-12 07:13:12,397 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 289 transitions. Word has length 50 [2022-07-12 07:13:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:12,397 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 289 transitions. [2022-07-12 07:13:12,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 289 transitions. [2022-07-12 07:13:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-12 07:13:12,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:12,398 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] [2022-07-12 07:13:12,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:13:12,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1717096174, now seen corresponding path program 1 times [2022-07-12 07:13:12,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:12,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937861665] [2022-07-12 07:13:12,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:12,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:12,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:12,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937861665] [2022-07-12 07:13:12,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937861665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:12,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:12,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:13:12,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219012891] [2022-07-12 07:13:12,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:12,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:13:12,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:12,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:13:12,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:13:12,506 INFO L87 Difference]: Start difference. First operand 226 states and 289 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:12,943 INFO L93 Difference]: Finished difference Result 548 states and 743 transitions. [2022-07-12 07:13:12,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:13:12,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-07-12 07:13:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:12,945 INFO L225 Difference]: With dead ends: 548 [2022-07-12 07:13:12,945 INFO L226 Difference]: Without dead ends: 542 [2022-07-12 07:13:12,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:13:12,946 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1244 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:12,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 632 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:13:12,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-07-12 07:13:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 226. [2022-07-12 07:13:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.3150684931506849) internal successors, (288), 225 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 288 transitions. [2022-07-12 07:13:12,965 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 288 transitions. Word has length 50 [2022-07-12 07:13:12,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:12,965 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 288 transitions. [2022-07-12 07:13:12,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:12,966 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 288 transitions. [2022-07-12 07:13:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-12 07:13:12,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:12,966 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] [2022-07-12 07:13:12,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:13:12,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1648014290, now seen corresponding path program 1 times [2022-07-12 07:13:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:12,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20978709] [2022-07-12 07:13:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:13,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:13,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20978709] [2022-07-12 07:13:13,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20978709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:13,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:13,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:13:13,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304226017] [2022-07-12 07:13:13,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:13,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:13:13,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:13:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:13:13,105 INFO L87 Difference]: Start difference. First operand 226 states and 288 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:13,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:13,481 INFO L93 Difference]: Finished difference Result 463 states and 631 transitions. [2022-07-12 07:13:13,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:13:13,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-07-12 07:13:13,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:13,496 INFO L225 Difference]: With dead ends: 463 [2022-07-12 07:13:13,496 INFO L226 Difference]: Without dead ends: 360 [2022-07-12 07:13:13,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-07-12 07:13:13,497 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 890 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:13,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 649 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:13:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-12 07:13:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 226. [2022-07-12 07:13:13,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 219 states have (on average 1.3105022831050228) internal successors, (287), 225 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:13,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 287 transitions. [2022-07-12 07:13:13,517 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 287 transitions. Word has length 50 [2022-07-12 07:13:13,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:13,518 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 287 transitions. [2022-07-12 07:13:13,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 287 transitions. [2022-07-12 07:13:13,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 07:13:13,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:13,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:13:13,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:13:13,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:13,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:13,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1708755507, now seen corresponding path program 1 times [2022-07-12 07:13:13,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:13,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554605093] [2022-07-12 07:13:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:13,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:13,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:13,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554605093] [2022-07-12 07:13:13,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554605093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:13,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:13,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 07:13:13,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159788033] [2022-07-12 07:13:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:13,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:13:13,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:13:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:13:13,811 INFO L87 Difference]: Start difference. First operand 226 states and 287 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:14,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:14,438 INFO L93 Difference]: Finished difference Result 584 states and 813 transitions. [2022-07-12 07:13:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:13:14,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-07-12 07:13:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:14,441 INFO L225 Difference]: With dead ends: 584 [2022-07-12 07:13:14,441 INFO L226 Difference]: Without dead ends: 488 [2022-07-12 07:13:14,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-12 07:13:14,443 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1104 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:14,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1601 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:13:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-07-12 07:13:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 214. [2022-07-12 07:13:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 208 states have (on average 1.3125) internal successors, (273), 213 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:14,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 273 transitions. [2022-07-12 07:13:14,467 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 273 transitions. Word has length 51 [2022-07-12 07:13:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:14,467 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 273 transitions. [2022-07-12 07:13:14,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 273 transitions. [2022-07-12 07:13:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 07:13:14,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:14,469 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] [2022-07-12 07:13:14,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:13:14,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash 871420535, now seen corresponding path program 1 times [2022-07-12 07:13:14,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:14,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60396941] [2022-07-12 07:13:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:14,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:14,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:14,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60396941] [2022-07-12 07:13:14,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60396941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:14,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:14,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 07:13:14,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951420693] [2022-07-12 07:13:14,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:14,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:13:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:14,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:13:14,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:13:14,683 INFO L87 Difference]: Start difference. First operand 214 states and 273 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:15,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:15,135 INFO L93 Difference]: Finished difference Result 461 states and 629 transitions. [2022-07-12 07:13:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 07:13:15,137 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-12 07:13:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:15,139 INFO L225 Difference]: With dead ends: 461 [2022-07-12 07:13:15,139 INFO L226 Difference]: Without dead ends: 444 [2022-07-12 07:13:15,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-07-12 07:13:15,140 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 987 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:15,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1569 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:13:15,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-12 07:13:15,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 197. [2022-07-12 07:13:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 193 states have (on average 1.310880829015544) internal successors, (253), 196 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 253 transitions. [2022-07-12 07:13:15,173 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 253 transitions. Word has length 52 [2022-07-12 07:13:15,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:15,175 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 253 transitions. [2022-07-12 07:13:15,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:15,175 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 253 transitions. [2022-07-12 07:13:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 07:13:15,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:15,176 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] [2022-07-12 07:13:15,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:13:15,176 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:15,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1375412663, now seen corresponding path program 1 times [2022-07-12 07:13:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:15,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366918394] [2022-07-12 07:13:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:15,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366918394] [2022-07-12 07:13:15,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366918394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:15,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:15,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 07:13:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167075696] [2022-07-12 07:13:15,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:13:15,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:15,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:13:15,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:13:15,411 INFO L87 Difference]: Start difference. First operand 197 states and 253 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:15,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:15,889 INFO L93 Difference]: Finished difference Result 435 states and 580 transitions. [2022-07-12 07:13:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:13:15,889 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-12 07:13:15,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:15,891 INFO L225 Difference]: With dead ends: 435 [2022-07-12 07:13:15,891 INFO L226 Difference]: Without dead ends: 347 [2022-07-12 07:13:15,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-12 07:13:15,893 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 935 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:15,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 842 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:13:15,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-12 07:13:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 193. [2022-07-12 07:13:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.305263157894737) internal successors, (248), 192 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 248 transitions. [2022-07-12 07:13:15,924 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 248 transitions. Word has length 52 [2022-07-12 07:13:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:15,924 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 248 transitions. [2022-07-12 07:13:15,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:15,924 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 248 transitions. [2022-07-12 07:13:15,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 07:13:15,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:15,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:13:15,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:13:15,925 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:15,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash 4832631, now seen corresponding path program 1 times [2022-07-12 07:13:15,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:15,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517393476] [2022-07-12 07:13:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:15,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:16,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:16,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517393476] [2022-07-12 07:13:16,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517393476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:16,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:16,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:13:16,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6529617] [2022-07-12 07:13:16,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:16,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:13:16,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:13:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:13:16,016 INFO L87 Difference]: Start difference. First operand 193 states and 248 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:16,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:16,221 INFO L93 Difference]: Finished difference Result 314 states and 416 transitions. [2022-07-12 07:13:16,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:13:16,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-12 07:13:16,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:16,222 INFO L225 Difference]: With dead ends: 314 [2022-07-12 07:13:16,222 INFO L226 Difference]: Without dead ends: 196 [2022-07-12 07:13:16,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-07-12 07:13:16,223 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 431 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:16,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 336 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:13:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-12 07:13:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2022-07-12 07:13:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.2947368421052632) internal successors, (246), 192 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 246 transitions. [2022-07-12 07:13:16,252 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 246 transitions. Word has length 54 [2022-07-12 07:13:16,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:16,252 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 246 transitions. [2022-07-12 07:13:16,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:16,252 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 246 transitions. [2022-07-12 07:13:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-12 07:13:16,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:16,253 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] [2022-07-12 07:13:16,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:13:16,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:16,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:16,254 INFO L85 PathProgramCache]: Analyzing trace with hash -924533993, now seen corresponding path program 1 times [2022-07-12 07:13:16,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:16,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628607483] [2022-07-12 07:13:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:16,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:16,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:16,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628607483] [2022-07-12 07:13:16,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628607483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:16,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:16,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:13:16,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962134291] [2022-07-12 07:13:16,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:16,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:13:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:13:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:13:16,338 INFO L87 Difference]: Start difference. First operand 193 states and 246 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:16,655 INFO L93 Difference]: Finished difference Result 341 states and 441 transitions. [2022-07-12 07:13:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 07:13:16,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-12 07:13:16,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:16,659 INFO L225 Difference]: With dead ends: 341 [2022-07-12 07:13:16,659 INFO L226 Difference]: Without dead ends: 333 [2022-07-12 07:13:16,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-12 07:13:16,659 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 621 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:16,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 641 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:13:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-12 07:13:16,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 193. [2022-07-12 07:13:16,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 190 states have (on average 1.2894736842105263) internal successors, (245), 192 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 245 transitions. [2022-07-12 07:13:16,691 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 245 transitions. Word has length 54 [2022-07-12 07:13:16,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:16,691 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 245 transitions. [2022-07-12 07:13:16,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:16,692 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 245 transitions. [2022-07-12 07:13:16,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 07:13:16,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:16,692 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] [2022-07-12 07:13:16,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:13:16,693 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:16,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1614885916, now seen corresponding path program 1 times [2022-07-12 07:13:16,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:16,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738508161] [2022-07-12 07:13:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:16,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:16,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:16,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738508161] [2022-07-12 07:13:16,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738508161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:16,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:16,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 07:13:16,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923479834] [2022-07-12 07:13:16,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:13:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:13:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:13:16,903 INFO L87 Difference]: Start difference. First operand 193 states and 245 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:17,483 INFO L93 Difference]: Finished difference Result 523 states and 707 transitions. [2022-07-12 07:13:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:13:17,484 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-07-12 07:13:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:17,486 INFO L225 Difference]: With dead ends: 523 [2022-07-12 07:13:17,486 INFO L226 Difference]: Without dead ends: 517 [2022-07-12 07:13:17,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-12 07:13:17,487 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 836 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:17,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1643 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:13:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-07-12 07:13:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 187. [2022-07-12 07:13:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.2864864864864864) internal successors, (238), 186 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 238 transitions. [2022-07-12 07:13:17,513 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 238 transitions. Word has length 56 [2022-07-12 07:13:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:17,513 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 238 transitions. [2022-07-12 07:13:17,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:17,513 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 238 transitions. [2022-07-12 07:13:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 07:13:17,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:17,514 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] [2022-07-12 07:13:17,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:13:17,514 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:17,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:17,514 INFO L85 PathProgramCache]: Analyzing trace with hash -712982628, now seen corresponding path program 1 times [2022-07-12 07:13:17,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:17,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695659939] [2022-07-12 07:13:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:17,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:17,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:17,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695659939] [2022-07-12 07:13:17,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695659939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:17,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:17,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 07:13:17,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176597904] [2022-07-12 07:13:17,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:17,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 07:13:17,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:17,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 07:13:17,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-12 07:13:17,793 INFO L87 Difference]: Start difference. First operand 187 states and 238 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:18,594 INFO L93 Difference]: Finished difference Result 221 states and 270 transitions. [2022-07-12 07:13:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 07:13:18,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-07-12 07:13:18,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:18,596 INFO L225 Difference]: With dead ends: 221 [2022-07-12 07:13:18,596 INFO L226 Difference]: Without dead ends: 212 [2022-07-12 07:13:18,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2022-07-12 07:13:18,597 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 280 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:18,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1459 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:13:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-12 07:13:18,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 193. [2022-07-12 07:13:18,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 191 states have (on average 1.2774869109947644) internal successors, (244), 192 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 244 transitions. [2022-07-12 07:13:18,621 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 244 transitions. Word has length 56 [2022-07-12 07:13:18,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:18,621 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 244 transitions. [2022-07-12 07:13:18,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:18,622 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 244 transitions. [2022-07-12 07:13:18,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 07:13:18,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:18,622 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] [2022-07-12 07:13:18,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 07:13:18,622 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:18,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:18,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1082760790, now seen corresponding path program 1 times [2022-07-12 07:13:18,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:18,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685634860] [2022-07-12 07:13:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:18,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:18,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:18,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685634860] [2022-07-12 07:13:18,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685634860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:18,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:18,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 07:13:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86650804] [2022-07-12 07:13:18,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:18,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 07:13:18,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:18,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 07:13:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:13:18,948 INFO L87 Difference]: Start difference. First operand 193 states and 244 transitions. Second operand has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:19,659 INFO L93 Difference]: Finished difference Result 212 states and 261 transitions. [2022-07-12 07:13:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 07:13:19,660 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-12 07:13:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:19,660 INFO L225 Difference]: With dead ends: 212 [2022-07-12 07:13:19,661 INFO L226 Difference]: Without dead ends: 196 [2022-07-12 07:13:19,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2022-07-12 07:13:19,662 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 476 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:19,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 944 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:13:19,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-12 07:13:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 187. [2022-07-12 07:13:19,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.281081081081081) internal successors, (237), 186 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 237 transitions. [2022-07-12 07:13:19,698 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 237 transitions. Word has length 57 [2022-07-12 07:13:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:19,699 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 237 transitions. [2022-07-12 07:13:19,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8) internal successors, (57), 15 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 237 transitions. [2022-07-12 07:13:19,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-12 07:13:19,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:19,700 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] [2022-07-12 07:13:19,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 07:13:19,700 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1556324125, now seen corresponding path program 1 times [2022-07-12 07:13:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:19,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549062045] [2022-07-12 07:13:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:19,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:19,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:19,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549062045] [2022-07-12 07:13:19,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549062045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:19,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:19,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 07:13:19,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430373470] [2022-07-12 07:13:19,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:19,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 07:13:19,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:19,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 07:13:19,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 07:13:19,858 INFO L87 Difference]: Start difference. First operand 187 states and 237 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:20,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:20,370 INFO L93 Difference]: Finished difference Result 455 states and 631 transitions. [2022-07-12 07:13:20,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:13:20,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-12 07:13:20,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:20,374 INFO L225 Difference]: With dead ends: 455 [2022-07-12 07:13:20,374 INFO L226 Difference]: Without dead ends: 435 [2022-07-12 07:13:20,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:13:20,375 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 961 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:20,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 721 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:13:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-07-12 07:13:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 167. [2022-07-12 07:13:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.3012048192771084) internal successors, (216), 166 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 216 transitions. [2022-07-12 07:13:20,412 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 216 transitions. Word has length 57 [2022-07-12 07:13:20,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:20,413 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 216 transitions. [2022-07-12 07:13:20,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 216 transitions. [2022-07-12 07:13:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 07:13:20,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:20,417 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] [2022-07-12 07:13:20,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 07:13:20,417 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:20,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1117882514, now seen corresponding path program 1 times [2022-07-12 07:13:20,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:20,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705417916] [2022-07-12 07:13:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:20,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:20,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:20,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705417916] [2022-07-12 07:13:20,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705417916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:20,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:20,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:13:20,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550901875] [2022-07-12 07:13:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:20,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:13:20,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:13:20,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:13:20,471 INFO L87 Difference]: Start difference. First operand 167 states and 216 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:20,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:20,637 INFO L93 Difference]: Finished difference Result 671 states and 972 transitions. [2022-07-12 07:13:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 07:13:20,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-12 07:13:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:20,639 INFO L225 Difference]: With dead ends: 671 [2022-07-12 07:13:20,639 INFO L226 Difference]: Without dead ends: 587 [2022-07-12 07:13:20,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:13:20,640 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 534 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:20,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 463 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-07-12 07:13:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 249. [2022-07-12 07:13:20,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3588709677419355) internal successors, (337), 248 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 337 transitions. [2022-07-12 07:13:20,689 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 337 transitions. Word has length 75 [2022-07-12 07:13:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:20,689 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 337 transitions. [2022-07-12 07:13:20,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 337 transitions. [2022-07-12 07:13:20,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:13:20,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:20,690 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] [2022-07-12 07:13:20,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 07:13:20,690 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:20,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:20,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1016465065, now seen corresponding path program 1 times [2022-07-12 07:13:20,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:20,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328626807] [2022-07-12 07:13:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:20,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:20,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328626807] [2022-07-12 07:13:20,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328626807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:20,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:20,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:13:20,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629737497] [2022-07-12 07:13:20,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:20,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:13:20,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:13:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:13:20,726 INFO L87 Difference]: Start difference. First operand 249 states and 337 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:20,907 INFO L93 Difference]: Finished difference Result 831 states and 1200 transitions. [2022-07-12 07:13:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:13:20,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-12 07:13:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:20,909 INFO L225 Difference]: With dead ends: 831 [2022-07-12 07:13:20,909 INFO L226 Difference]: Without dead ends: 665 [2022-07-12 07:13:20,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:13:20,910 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 296 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:20,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 422 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-07-12 07:13:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 413. [2022-07-12 07:13:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.4101941747572815) internal successors, (581), 412 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 581 transitions. [2022-07-12 07:13:20,997 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 581 transitions. Word has length 77 [2022-07-12 07:13:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:20,998 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 581 transitions. [2022-07-12 07:13:20,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:20,998 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 581 transitions. [2022-07-12 07:13:20,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:13:20,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:20,999 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] [2022-07-12 07:13:20,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 07:13:20,999 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:20,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:20,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1101947074, now seen corresponding path program 1 times [2022-07-12 07:13:21,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:21,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354109463] [2022-07-12 07:13:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:21,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:21,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:21,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354109463] [2022-07-12 07:13:21,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354109463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:21,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:21,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:13:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151101829] [2022-07-12 07:13:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:21,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:13:21,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:13:21,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:21,047 INFO L87 Difference]: Start difference. First operand 413 states and 581 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:21,277 INFO L93 Difference]: Finished difference Result 1021 states and 1471 transitions. [2022-07-12 07:13:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:13:21,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-12 07:13:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:21,280 INFO L225 Difference]: With dead ends: 1021 [2022-07-12 07:13:21,281 INFO L226 Difference]: Without dead ends: 691 [2022-07-12 07:13:21,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:21,282 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 51 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:21,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 290 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-12 07:13:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2022-07-12 07:13:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.3997093023255813) internal successors, (963), 688 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 963 transitions. [2022-07-12 07:13:21,481 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 963 transitions. Word has length 77 [2022-07-12 07:13:21,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:21,481 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 963 transitions. [2022-07-12 07:13:21,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 963 transitions. [2022-07-12 07:13:21,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:13:21,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:21,482 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] [2022-07-12 07:13:21,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 07:13:21,482 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:21,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:21,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1035453562, now seen corresponding path program 1 times [2022-07-12 07:13:21,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:21,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785518958] [2022-07-12 07:13:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:21,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:21,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:21,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785518958] [2022-07-12 07:13:21,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785518958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:21,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:21,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:13:21,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897879458] [2022-07-12 07:13:21,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:21,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:13:21,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:13:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:21,515 INFO L87 Difference]: Start difference. First operand 689 states and 963 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:21,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:21,716 INFO L93 Difference]: Finished difference Result 1297 states and 1837 transitions. [2022-07-12 07:13:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:13:21,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-12 07:13:21,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:21,718 INFO L225 Difference]: With dead ends: 1297 [2022-07-12 07:13:21,718 INFO L226 Difference]: Without dead ends: 691 [2022-07-12 07:13:21,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:21,719 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:21,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 209 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-12 07:13:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 689. [2022-07-12 07:13:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 1.3938953488372092) internal successors, (959), 688 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 959 transitions. [2022-07-12 07:13:21,881 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 959 transitions. Word has length 77 [2022-07-12 07:13:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:21,881 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 959 transitions. [2022-07-12 07:13:21,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 959 transitions. [2022-07-12 07:13:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:13:21,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:21,882 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] [2022-07-12 07:13:21,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 07:13:21,882 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:21,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -401787049, now seen corresponding path program 1 times [2022-07-12 07:13:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:21,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350071780] [2022-07-12 07:13:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:21,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:21,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:21,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350071780] [2022-07-12 07:13:21,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350071780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:21,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:21,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:13:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466066480] [2022-07-12 07:13:21,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:21,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:13:21,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:13:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:13:21,925 INFO L87 Difference]: Start difference. First operand 689 states and 959 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:22,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:22,359 INFO L93 Difference]: Finished difference Result 1755 states and 2487 transitions. [2022-07-12 07:13:22,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:13:22,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-12 07:13:22,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:22,364 INFO L225 Difference]: With dead ends: 1755 [2022-07-12 07:13:22,364 INFO L226 Difference]: Without dead ends: 1451 [2022-07-12 07:13:22,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:13:22,365 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 291 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:22,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 461 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:22,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2022-07-12 07:13:22,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1143. [2022-07-12 07:13:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 1142 states have (on average 1.4071803852889668) internal successors, (1607), 1142 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:22,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1607 transitions. [2022-07-12 07:13:22,648 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1607 transitions. Word has length 77 [2022-07-12 07:13:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:22,648 INFO L495 AbstractCegarLoop]: Abstraction has 1143 states and 1607 transitions. [2022-07-12 07:13:22,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1607 transitions. [2022-07-12 07:13:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 07:13:22,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:22,649 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] [2022-07-12 07:13:22,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 07:13:22,649 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:22,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1826714967, now seen corresponding path program 1 times [2022-07-12 07:13:22,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:22,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508403596] [2022-07-12 07:13:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:22,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:22,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508403596] [2022-07-12 07:13:22,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508403596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:22,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:22,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:13:22,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860269682] [2022-07-12 07:13:22,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:22,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:13:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:13:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:13:22,685 INFO L87 Difference]: Start difference. First operand 1143 states and 1607 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:23,184 INFO L93 Difference]: Finished difference Result 2057 states and 2919 transitions. [2022-07-12 07:13:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:13:23,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-12 07:13:23,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:23,189 INFO L225 Difference]: With dead ends: 2057 [2022-07-12 07:13:23,189 INFO L226 Difference]: Without dead ends: 1753 [2022-07-12 07:13:23,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:13:23,192 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 291 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:23,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 423 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-07-12 07:13:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1445. [2022-07-12 07:13:23,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.4120498614958448) internal successors, (2039), 1444 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2039 transitions. [2022-07-12 07:13:23,588 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2039 transitions. Word has length 77 [2022-07-12 07:13:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:23,588 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2039 transitions. [2022-07-12 07:13:23,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2039 transitions. [2022-07-12 07:13:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-12 07:13:23,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:23,589 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] [2022-07-12 07:13:23,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 07:13:23,589 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:23,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash 275968985, now seen corresponding path program 1 times [2022-07-12 07:13:23,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:23,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423150453] [2022-07-12 07:13:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:23,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:23,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:23,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423150453] [2022-07-12 07:13:23,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423150453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:23,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:23,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:13:23,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277763170] [2022-07-12 07:13:23,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:23,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:13:23,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:13:23,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:23,617 INFO L87 Difference]: Start difference. First operand 1445 states and 2039 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:24,355 INFO L93 Difference]: Finished difference Result 3683 states and 5215 transitions. [2022-07-12 07:13:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:13:24,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-07-12 07:13:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:24,362 INFO L225 Difference]: With dead ends: 3683 [2022-07-12 07:13:24,362 INFO L226 Difference]: Without dead ends: 2321 [2022-07-12 07:13:24,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:24,364 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 60 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:24,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2022-07-12 07:13:24,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 2175. [2022-07-12 07:13:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2175 states, 2174 states have (on average 1.3942042318307268) internal successors, (3031), 2174 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:24,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2175 states to 2175 states and 3031 transitions. [2022-07-12 07:13:24,982 INFO L78 Accepts]: Start accepts. Automaton has 2175 states and 3031 transitions. Word has length 78 [2022-07-12 07:13:24,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:24,983 INFO L495 AbstractCegarLoop]: Abstraction has 2175 states and 3031 transitions. [2022-07-12 07:13:24,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:24,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2175 states and 3031 transitions. [2022-07-12 07:13:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 07:13:24,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:24,984 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] [2022-07-12 07:13:24,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 07:13:24,984 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:24,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:24,984 INFO L85 PathProgramCache]: Analyzing trace with hash -163971304, now seen corresponding path program 1 times [2022-07-12 07:13:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:24,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866433025] [2022-07-12 07:13:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:25,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:25,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866433025] [2022-07-12 07:13:25,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866433025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:25,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:25,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:13:25,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087802311] [2022-07-12 07:13:25,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:25,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:13:25,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:13:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:25,017 INFO L87 Difference]: Start difference. First operand 2175 states and 3031 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:25,623 INFO L93 Difference]: Finished difference Result 4351 states and 6088 transitions. [2022-07-12 07:13:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:13:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-12 07:13:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:25,630 INFO L225 Difference]: With dead ends: 4351 [2022-07-12 07:13:25,630 INFO L226 Difference]: Without dead ends: 2259 [2022-07-12 07:13:25,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:25,632 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 68 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:25,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 204 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:25,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2022-07-12 07:13:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2257. [2022-07-12 07:13:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.377659574468085) internal successors, (3108), 2256 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3108 transitions. [2022-07-12 07:13:26,271 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3108 transitions. Word has length 79 [2022-07-12 07:13:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:26,271 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3108 transitions. [2022-07-12 07:13:26,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3108 transitions. [2022-07-12 07:13:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 07:13:26,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:26,272 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] [2022-07-12 07:13:26,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 07:13:26,273 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:26,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:26,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1432796505, now seen corresponding path program 1 times [2022-07-12 07:13:26,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:26,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249830679] [2022-07-12 07:13:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:26,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:26,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:26,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249830679] [2022-07-12 07:13:26,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249830679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:26,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:26,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:13:26,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251966934] [2022-07-12 07:13:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:26,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:13:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:13:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:26,299 INFO L87 Difference]: Start difference. First operand 2257 states and 3108 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:27,476 INFO L93 Difference]: Finished difference Result 6381 states and 8752 transitions. [2022-07-12 07:13:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:13:27,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-07-12 07:13:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:27,489 INFO L225 Difference]: With dead ends: 6381 [2022-07-12 07:13:27,489 INFO L226 Difference]: Without dead ends: 4207 [2022-07-12 07:13:27,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:27,492 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 53 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:27,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 265 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:27,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2022-07-12 07:13:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3981. [2022-07-12 07:13:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3980 states have (on average 1.3560301507537689) internal successors, (5397), 3980 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 5397 transitions. [2022-07-12 07:13:28,653 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 5397 transitions. Word has length 79 [2022-07-12 07:13:28,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:28,653 INFO L495 AbstractCegarLoop]: Abstraction has 3981 states and 5397 transitions. [2022-07-12 07:13:28,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 5397 transitions. [2022-07-12 07:13:28,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-12 07:13:28,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:28,654 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] [2022-07-12 07:13:28,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 07:13:28,655 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:28,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash -21206962, now seen corresponding path program 1 times [2022-07-12 07:13:28,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:28,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701914565] [2022-07-12 07:13:28,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:28,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:28,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:28,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701914565] [2022-07-12 07:13:28,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701914565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:28,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:28,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:13:28,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372463227] [2022-07-12 07:13:28,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:28,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:13:28,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:28,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:13:28,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:28,690 INFO L87 Difference]: Start difference. First operand 3981 states and 5397 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:30,751 INFO L93 Difference]: Finished difference Result 11329 states and 15227 transitions. [2022-07-12 07:13:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:13:30,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-07-12 07:13:30,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:30,769 INFO L225 Difference]: With dead ends: 11329 [2022-07-12 07:13:30,770 INFO L226 Difference]: Without dead ends: 7431 [2022-07-12 07:13:30,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:13:30,773 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 43 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:30,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 265 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:30,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2022-07-12 07:13:32,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 6981. [2022-07-12 07:13:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6981 states, 6980 states have (on average 1.324785100286533) internal successors, (9247), 6980 states have internal predecessors, (9247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6981 states to 6981 states and 9247 transitions. [2022-07-12 07:13:32,768 INFO L78 Accepts]: Start accepts. Automaton has 6981 states and 9247 transitions. Word has length 80 [2022-07-12 07:13:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:32,768 INFO L495 AbstractCegarLoop]: Abstraction has 6981 states and 9247 transitions. [2022-07-12 07:13:32,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:32,769 INFO L276 IsEmpty]: Start isEmpty. Operand 6981 states and 9247 transitions. [2022-07-12 07:13:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-12 07:13:32,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:32,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:13:32,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 07:13:32,770 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:32,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1223980109, now seen corresponding path program 1 times [2022-07-12 07:13:32,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:32,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292984254] [2022-07-12 07:13:32,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:32,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:32,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:32,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292984254] [2022-07-12 07:13:32,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292984254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:13:32,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:13:32,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:13:32,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401344095] [2022-07-12 07:13:32,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:13:32,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:13:32,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:32,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:13:32,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:13:32,861 INFO L87 Difference]: Start difference. First operand 6981 states and 9247 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:13:36,015 INFO L93 Difference]: Finished difference Result 10517 states and 13893 transitions. [2022-07-12 07:13:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:13:36,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-12 07:13:36,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:13:36,044 INFO L225 Difference]: With dead ends: 10517 [2022-07-12 07:13:36,044 INFO L226 Difference]: Without dead ends: 10515 [2022-07-12 07:13:36,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:13:36,047 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 204 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:13:36,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 639 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:13:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2022-07-12 07:13:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 7173. [2022-07-12 07:13:38,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7173 states, 7172 states have (on average 1.3049358616843278) internal successors, (9359), 7172 states have internal predecessors, (9359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 9359 transitions. [2022-07-12 07:13:38,206 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 9359 transitions. Word has length 81 [2022-07-12 07:13:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:13:38,206 INFO L495 AbstractCegarLoop]: Abstraction has 7173 states and 9359 transitions. [2022-07-12 07:13:38,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:13:38,206 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 9359 transitions. [2022-07-12 07:13:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 07:13:38,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:13:38,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:13:38,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 07:13:38,208 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:13:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:13:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1680108859, now seen corresponding path program 1 times [2022-07-12 07:13:38,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:13:38,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890010019] [2022-07-12 07:13:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:38,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:13:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:38,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:13:38,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890010019] [2022-07-12 07:13:38,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890010019] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:13:38,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206598345] [2022-07-12 07:13:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:13:38,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:13:38,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:13:38,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:13:38,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 07:13:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:13:38,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 07:13:38,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:13:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:39,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:13:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:13:41,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206598345] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:13:41,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:13:41,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-07-12 07:13:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658436641] [2022-07-12 07:13:41,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:13:41,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 07:13:41,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:13:41,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 07:13:41,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-07-12 07:13:41,089 INFO L87 Difference]: Start difference. First operand 7173 states and 9359 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 28 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:14:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:14:46,838 INFO L93 Difference]: Finished difference Result 115930 states and 146521 transitions. [2022-07-12 07:14:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2022-07-12 07:14:46,838 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 28 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-07-12 07:14:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:14:47,069 INFO L225 Difference]: With dead ends: 115930 [2022-07-12 07:14:47,070 INFO L226 Difference]: Without dead ends: 108840 [2022-07-12 07:14:47,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 576 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66148 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=16579, Invalid=135911, Unknown=0, NotChecked=0, Total=152490 [2022-07-12 07:14:47,123 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 7973 mSDsluCounter, 4172 mSDsCounter, 0 mSdLazyCounter, 3839 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7973 SdHoareTripleChecker+Valid, 4462 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 3839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:14:47,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7973 Valid, 4462 Invalid, 4300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 3839 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 07:14:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108840 states. [2022-07-12 07:14:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108840 to 26643. [2022-07-12 07:14:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26643 states, 26642 states have (on average 1.290969146460476) internal successors, (34394), 26642 states have internal predecessors, (34394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:14:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26643 states to 26643 states and 34394 transitions. [2022-07-12 07:14:58,521 INFO L78 Accepts]: Start accepts. Automaton has 26643 states and 34394 transitions. Word has length 103 [2022-07-12 07:14:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:14:58,521 INFO L495 AbstractCegarLoop]: Abstraction has 26643 states and 34394 transitions. [2022-07-12 07:14:58,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 28 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:14:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 26643 states and 34394 transitions. [2022-07-12 07:14:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 07:14:58,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:14:58,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:14:58,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 07:14:58,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-12 07:14:58,744 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-12 07:14:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:14:58,745 INFO L85 PathProgramCache]: Analyzing trace with hash -448392738, now seen corresponding path program 1 times [2022-07-12 07:14:58,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:14:58,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401446044] [2022-07-12 07:14:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:14:58,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:14:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:14:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:14:58,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:14:58,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401446044] [2022-07-12 07:14:58,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401446044] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:14:58,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364339313] [2022-07-12 07:14:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:14:58,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:14:58,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:14:58,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:14:58,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 07:14:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:14:59,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 07:14:59,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:14:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:14:59,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:15:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:15:00,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364339313] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:15:00,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:15:00,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2022-07-12 07:15:00,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711485949] [2022-07-12 07:15:00,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:15:00,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 07:15:00,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:15:00,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 07:15:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-07-12 07:15:00,131 INFO L87 Difference]: Start difference. First operand 26643 states and 34394 transitions. Second operand has 28 states, 28 states have (on average 10.178571428571429) internal successors, (285), 28 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)