./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c198beb0d28344ce853798ba0422f36d86e4a319bc1c9073be7222ccddc0e2fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:54:25,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:54:25,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:54:25,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:54:25,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:54:25,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:54:25,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:54:25,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:54:25,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:54:25,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:54:25,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:54:25,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:54:25,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:54:25,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:54:25,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:54:25,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:54:25,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:54:25,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:54:25,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:54:25,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:54:25,372 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:54:25,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:54:25,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:54:25,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:54:25,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:54:25,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:54:25,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:54:25,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:54:25,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:54:25,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:54:25,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:54:25,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:54:25,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:54:25,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:54:25,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:54:25,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:54:25,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:54:25,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:54:25,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:54:25,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:54:25,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:54:25,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:54:25,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:54:25,410 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:54:25,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:54:25,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:54:25,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:54:25,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:54:25,412 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:54:25,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:54:25,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:54:25,413 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:54:25,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:54:25,413 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:54:25,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:54:25,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:54:25,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:54:25,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:54:25,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:54:25,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:54:25,414 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:54:25,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:54:25,415 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:54:25,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:54:25,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:54:25,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:54:25,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:54:25,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:54:25,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:54:25,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:54:25,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:54:25,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:54:25,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:54:25,417 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:54:25,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:54:25,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:54:25,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c198beb0d28344ce853798ba0422f36d86e4a319bc1c9073be7222ccddc0e2fa [2022-07-22 18:54:25,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:54:25,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:54:25,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:54:25,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:54:25,614 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:54:25,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-22 18:54:25,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b9fece26/c5e03db6f897496fa87d5ebb4904a29f/FLAGe72b44add [2022-07-22 18:54:26,073 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:54:26,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-22 18:54:26,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b9fece26/c5e03db6f897496fa87d5ebb4904a29f/FLAGe72b44add [2022-07-22 18:54:26,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b9fece26/c5e03db6f897496fa87d5ebb4904a29f [2022-07-22 18:54:26,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:54:26,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:54:26,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:54:26,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:54:26,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:54:26,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:54:26" (1/1) ... [2022-07-22 18:54:26,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1c6ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:26, skipping insertion in model container [2022-07-22 18:54:26,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:54:26" (1/1) ... [2022-07-22 18:54:26,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:54:26,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:54:26,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2022-07-22 18:54:26,842 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2022-07-22 18:54:26,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2022-07-22 18:54:26,942 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2022-07-22 18:54:26,948 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2022-07-22 18:54:26,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:54:26,981 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:54:27,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15595,15608] [2022-07-22 18:54:27,093 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16571,16584] [2022-07-22 18:54:27,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28918,28931] [2022-07-22 18:54:27,193 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[29565,29578] [2022-07-22 18:54:27,206 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[30949,30962] [2022-07-22 18:54:27,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:54:27,243 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:54:27,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27 WrapperNode [2022-07-22 18:54:27,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:54:27,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:54:27,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:54:27,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:54:27,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,317 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1696 [2022-07-22 18:54:27,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:54:27,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:54:27,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:54:27,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:54:27,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:54:27,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:54:27,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:54:27,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:54:27,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (1/1) ... [2022-07-22 18:54:27,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:54:27,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:54:27,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 18:54:27,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 18:54:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:54:27,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:54:27,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:54:27,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:54:27,620 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:54:27,631 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:54:28,450 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:54:28,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:54:28,457 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:54:28,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:54:28 BoogieIcfgContainer [2022-07-22 18:54:28,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:54:28,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:54:28,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:54:28,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:54:28,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:54:26" (1/3) ... [2022-07-22 18:54:28,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3181ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:54:28, skipping insertion in model container [2022-07-22 18:54:28,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:54:27" (2/3) ... [2022-07-22 18:54:28,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3181ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:54:28, skipping insertion in model container [2022-07-22 18:54:28,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:54:28" (3/3) ... [2022-07-22 18:54:28,465 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-22 18:54:28,474 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:54:28,474 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-07-22 18:54:28,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:54:28,513 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@40fe8f71, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37a14963 [2022-07-22 18:54:28,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 18:54:28,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 418 states have (on average 1.8038277511961722) internal successors, (754), 423 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 18:54:28,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:28,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:28,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1455877833, now seen corresponding path program 1 times [2022-07-22 18:54:28,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:28,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762157798] [2022-07-22 18:54:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:28,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:28,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762157798] [2022-07-22 18:54:28,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762157798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:28,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:28,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:54:28,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735602549] [2022-07-22 18:54:28,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:28,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:54:28,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:54:28,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:28,947 INFO L87 Difference]: Start difference. First operand has 424 states, 418 states have (on average 1.8038277511961722) internal successors, (754), 423 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:29,097 INFO L93 Difference]: Finished difference Result 767 states and 1341 transitions. [2022-07-22 18:54:29,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:54:29,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-07-22 18:54:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:29,109 INFO L225 Difference]: With dead ends: 767 [2022-07-22 18:54:29,109 INFO L226 Difference]: Without dead ends: 612 [2022-07-22 18:54:29,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:29,113 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 474 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:29,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 1181 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:54:29,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-07-22 18:54:29,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 610. [2022-07-22 18:54:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 605 states have (on average 1.4793388429752066) internal successors, (895), 609 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 895 transitions. [2022-07-22 18:54:29,166 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 895 transitions. Word has length 150 [2022-07-22 18:54:29,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:29,167 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 895 transitions. [2022-07-22 18:54:29,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,168 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 895 transitions. [2022-07-22 18:54:29,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 18:54:29,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:29,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:29,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:54:29,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:29,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1340171657, now seen corresponding path program 1 times [2022-07-22 18:54:29,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:29,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694955368] [2022-07-22 18:54:29,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694955368] [2022-07-22 18:54:29,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694955368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:29,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:29,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604067980] [2022-07-22 18:54:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:29,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:54:29,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:54:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:54:29,326 INFO L87 Difference]: Start difference. First operand 610 states and 895 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:29,428 INFO L93 Difference]: Finished difference Result 1784 states and 2608 transitions. [2022-07-22 18:54:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:29,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-07-22 18:54:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:29,433 INFO L225 Difference]: With dead ends: 1784 [2022-07-22 18:54:29,433 INFO L226 Difference]: Without dead ends: 1183 [2022-07-22 18:54:29,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:29,435 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 1291 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1291 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:29,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1291 Valid, 1534 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:29,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-07-22 18:54:29,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1156. [2022-07-22 18:54:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1151 states have (on average 1.466550825369244) internal successors, (1688), 1155 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1688 transitions. [2022-07-22 18:54:29,486 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1688 transitions. Word has length 150 [2022-07-22 18:54:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:29,487 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1688 transitions. [2022-07-22 18:54:29,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1688 transitions. [2022-07-22 18:54:29,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-22 18:54:29,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:29,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:29,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:54:29,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:29,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1287913931, now seen corresponding path program 1 times [2022-07-22 18:54:29,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:29,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509075256] [2022-07-22 18:54:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:29,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:29,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509075256] [2022-07-22 18:54:29,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509075256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:29,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:29,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:54:29,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883400438] [2022-07-22 18:54:29,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:29,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:54:29,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:29,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:54:29,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:29,537 INFO L87 Difference]: Start difference. First operand 1156 states and 1688 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:29,631 INFO L93 Difference]: Finished difference Result 3430 states and 5002 transitions. [2022-07-22 18:54:29,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:54:29,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-07-22 18:54:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:29,639 INFO L225 Difference]: With dead ends: 3430 [2022-07-22 18:54:29,639 INFO L226 Difference]: Without dead ends: 2302 [2022-07-22 18:54:29,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:29,641 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 594 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:29,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 1397 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-07-22 18:54:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1158. [2022-07-22 18:54:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1153 states have (on average 1.4657415437987857) internal successors, (1690), 1157 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1690 transitions. [2022-07-22 18:54:29,713 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1690 transitions. Word has length 151 [2022-07-22 18:54:29,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:29,713 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 1690 transitions. [2022-07-22 18:54:29,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1690 transitions. [2022-07-22 18:54:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-22 18:54:29,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:29,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:29,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:54:29,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:29,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1852245384, now seen corresponding path program 1 times [2022-07-22 18:54:29,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:29,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122443939] [2022-07-22 18:54:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:29,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:29,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122443939] [2022-07-22 18:54:29,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122443939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:29,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:29,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:29,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358978633] [2022-07-22 18:54:29,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:29,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:54:29,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:54:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:54:29,873 INFO L87 Difference]: Start difference. First operand 1158 states and 1690 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:30,052 INFO L93 Difference]: Finished difference Result 3356 states and 4874 transitions. [2022-07-22 18:54:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-07-22 18:54:30,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:30,058 INFO L225 Difference]: With dead ends: 3356 [2022-07-22 18:54:30,058 INFO L226 Difference]: Without dead ends: 2228 [2022-07-22 18:54:30,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:30,061 INFO L413 NwaCegarLoop]: 1049 mSDtfsCounter, 1198 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:30,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1602 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:30,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2022-07-22 18:54:30,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2201. [2022-07-22 18:54:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 2196 states have (on average 1.4489981785063752) internal successors, (3182), 2200 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3182 transitions. [2022-07-22 18:54:30,210 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3182 transitions. Word has length 152 [2022-07-22 18:54:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:30,210 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 3182 transitions. [2022-07-22 18:54:30,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3182 transitions. [2022-07-22 18:54:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 18:54:30,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:30,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:30,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:54:30,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:30,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash 258705708, now seen corresponding path program 1 times [2022-07-22 18:54:30,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:30,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610400057] [2022-07-22 18:54:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:30,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:30,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:30,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610400057] [2022-07-22 18:54:30,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610400057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:30,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:30,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:54:30,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198022028] [2022-07-22 18:54:30,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:30,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:54:30,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:30,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:54:30,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:30,248 INFO L87 Difference]: Start difference. First operand 2201 states and 3182 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:30,528 INFO L93 Difference]: Finished difference Result 6527 states and 9426 transitions. [2022-07-22 18:54:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:54:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-07-22 18:54:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:30,539 INFO L225 Difference]: With dead ends: 6527 [2022-07-22 18:54:30,539 INFO L226 Difference]: Without dead ends: 4370 [2022-07-22 18:54:30,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:30,542 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 580 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:30,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1331 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2022-07-22 18:54:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 2205. [2022-07-22 18:54:30,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 2200 states have (on average 1.4481818181818182) internal successors, (3186), 2204 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3186 transitions. [2022-07-22 18:54:30,729 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3186 transitions. Word has length 153 [2022-07-22 18:54:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:30,729 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 3186 transitions. [2022-07-22 18:54:30,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:30,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3186 transitions. [2022-07-22 18:54:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 18:54:30,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:30,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:30,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:54:30,734 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:30,734 INFO L85 PathProgramCache]: Analyzing trace with hash 56905465, now seen corresponding path program 1 times [2022-07-22 18:54:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:30,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425127501] [2022-07-22 18:54:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:30,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:30,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:30,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425127501] [2022-07-22 18:54:30,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425127501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:30,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:30,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:30,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542266212] [2022-07-22 18:54:30,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:30,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:54:30,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:54:30,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:54:30,825 INFO L87 Difference]: Start difference. First operand 2205 states and 3186 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:31,172 INFO L93 Difference]: Finished difference Result 6028 states and 8657 transitions. [2022-07-22 18:54:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-07-22 18:54:31,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:31,185 INFO L225 Difference]: With dead ends: 6028 [2022-07-22 18:54:31,186 INFO L226 Difference]: Without dead ends: 3871 [2022-07-22 18:54:31,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:31,189 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 1263 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:31,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1263 Valid, 1520 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:54:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3871 states. [2022-07-22 18:54:31,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3871 to 3844. [2022-07-22 18:54:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3839 states have (on average 1.4240687679083095) internal successors, (5467), 3843 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 5467 transitions. [2022-07-22 18:54:31,574 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 5467 transitions. Word has length 154 [2022-07-22 18:54:31,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:31,575 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 5467 transitions. [2022-07-22 18:54:31,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 5467 transitions. [2022-07-22 18:54:31,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-22 18:54:31,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:31,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:31,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:54:31,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:31,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:31,582 INFO L85 PathProgramCache]: Analyzing trace with hash 954785037, now seen corresponding path program 1 times [2022-07-22 18:54:31,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:31,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640295517] [2022-07-22 18:54:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:31,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:31,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:31,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640295517] [2022-07-22 18:54:31,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640295517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:31,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:31,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:54:31,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808386741] [2022-07-22 18:54:31,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:31,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:54:31,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:31,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:54:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:31,619 INFO L87 Difference]: Start difference. First operand 3844 states and 5467 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:32,119 INFO L93 Difference]: Finished difference Result 11100 states and 15823 transitions. [2022-07-22 18:54:32,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:54:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-07-22 18:54:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:32,138 INFO L225 Difference]: With dead ends: 11100 [2022-07-22 18:54:32,138 INFO L226 Difference]: Without dead ends: 7596 [2022-07-22 18:54:32,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:32,143 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 566 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:32,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 1764 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2022-07-22 18:54:32,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 3852. [2022-07-22 18:54:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3847 states have (on average 1.4231868988822458) internal successors, (5475), 3851 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5475 transitions. [2022-07-22 18:54:32,467 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5475 transitions. Word has length 155 [2022-07-22 18:54:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:32,467 INFO L495 AbstractCegarLoop]: Abstraction has 3852 states and 5475 transitions. [2022-07-22 18:54:32,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:32,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5475 transitions. [2022-07-22 18:54:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 18:54:32,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:32,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:32,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:54:32,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:32,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash -536571574, now seen corresponding path program 1 times [2022-07-22 18:54:32,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:32,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223065861] [2022-07-22 18:54:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:32,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:32,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:32,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223065861] [2022-07-22 18:54:32,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223065861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:32,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:32,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:54:32,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292137304] [2022-07-22 18:54:32,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:32,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:54:32,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:32,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:54:32,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:32,559 INFO L87 Difference]: Start difference. First operand 3852 states and 5475 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:33,119 INFO L93 Difference]: Finished difference Result 11204 states and 15862 transitions. [2022-07-22 18:54:33,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:33,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-07-22 18:54:33,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:33,146 INFO L225 Difference]: With dead ends: 11204 [2022-07-22 18:54:33,149 INFO L226 Difference]: Without dead ends: 7440 [2022-07-22 18:54:33,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:33,156 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 1124 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:33,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 2134 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7440 states. [2022-07-22 18:54:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7440 to 7413. [2022-07-22 18:54:33,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7413 states, 7408 states have (on average 1.404292656587473) internal successors, (10403), 7412 states have internal predecessors, (10403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:33,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7413 states to 7413 states and 10403 transitions. [2022-07-22 18:54:33,699 INFO L78 Accepts]: Start accepts. Automaton has 7413 states and 10403 transitions. Word has length 156 [2022-07-22 18:54:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:33,700 INFO L495 AbstractCegarLoop]: Abstraction has 7413 states and 10403 transitions. [2022-07-22 18:54:33,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:33,701 INFO L276 IsEmpty]: Start isEmpty. Operand 7413 states and 10403 transitions. [2022-07-22 18:54:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 18:54:33,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:33,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:33,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:54:33,710 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:33,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:33,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1526474758, now seen corresponding path program 1 times [2022-07-22 18:54:33,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:33,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157562311] [2022-07-22 18:54:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:33,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:33,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:33,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157562311] [2022-07-22 18:54:33,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157562311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:33,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:33,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906145159] [2022-07-22 18:54:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:33,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:54:33,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:54:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:54:33,784 INFO L87 Difference]: Start difference. First operand 7413 states and 10403 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:34,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:34,256 INFO L93 Difference]: Finished difference Result 13014 states and 18248 transitions. [2022-07-22 18:54:34,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:34,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-07-22 18:54:34,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:34,266 INFO L225 Difference]: With dead ends: 13014 [2022-07-22 18:54:34,266 INFO L226 Difference]: Without dead ends: 5675 [2022-07-22 18:54:34,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:34,273 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 65 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:34,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1846 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2022-07-22 18:54:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 5675. [2022-07-22 18:54:34,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5675 states, 5670 states have (on average 1.4017636684303352) internal successors, (7948), 5674 states have internal predecessors, (7948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5675 states to 5675 states and 7948 transitions. [2022-07-22 18:54:34,686 INFO L78 Accepts]: Start accepts. Automaton has 5675 states and 7948 transitions. Word has length 156 [2022-07-22 18:54:34,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:34,686 INFO L495 AbstractCegarLoop]: Abstraction has 5675 states and 7948 transitions. [2022-07-22 18:54:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5675 states and 7948 transitions. [2022-07-22 18:54:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-22 18:54:34,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:34,692 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:34,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:54:34,692 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:34,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2039955482, now seen corresponding path program 1 times [2022-07-22 18:54:34,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:34,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602003028] [2022-07-22 18:54:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:34,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602003028] [2022-07-22 18:54:34,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602003028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:34,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:34,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:54:34,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824784058] [2022-07-22 18:54:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:34,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:54:34,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:34,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:54:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:34,724 INFO L87 Difference]: Start difference. First operand 5675 states and 7948 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:35,273 INFO L93 Difference]: Finished difference Result 13212 states and 18956 transitions. [2022-07-22 18:54:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:54:35,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-07-22 18:54:35,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:35,284 INFO L225 Difference]: With dead ends: 13212 [2022-07-22 18:54:35,284 INFO L226 Difference]: Without dead ends: 8149 [2022-07-22 18:54:35,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:35,289 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 315 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:35,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1277 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:35,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8149 states. [2022-07-22 18:54:35,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8149 to 7132. [2022-07-22 18:54:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7132 states, 7127 states have (on average 1.4453486740564052) internal successors, (10301), 7131 states have internal predecessors, (10301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:35,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7132 states to 7132 states and 10301 transitions. [2022-07-22 18:54:35,772 INFO L78 Accepts]: Start accepts. Automaton has 7132 states and 10301 transitions. Word has length 158 [2022-07-22 18:54:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:35,773 INFO L495 AbstractCegarLoop]: Abstraction has 7132 states and 10301 transitions. [2022-07-22 18:54:35,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 7132 states and 10301 transitions. [2022-07-22 18:54:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 18:54:35,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:35,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:35,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:54:35,782 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash -941287042, now seen corresponding path program 1 times [2022-07-22 18:54:35,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:35,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708580081] [2022-07-22 18:54:35,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:35,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:35,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:35,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708580081] [2022-07-22 18:54:35,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708580081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:35,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:35,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:54:35,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550140009] [2022-07-22 18:54:35,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:35,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:54:35,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:54:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:35,817 INFO L87 Difference]: Start difference. First operand 7132 states and 10301 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:36,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:36,622 INFO L93 Difference]: Finished difference Result 15693 states and 23187 transitions. [2022-07-22 18:54:36,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:54:36,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-07-22 18:54:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:36,639 INFO L225 Difference]: With dead ends: 15693 [2022-07-22 18:54:36,639 INFO L226 Difference]: Without dead ends: 10322 [2022-07-22 18:54:36,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:36,646 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 352 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:36,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1279 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2022-07-22 18:54:37,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 9350. [2022-07-22 18:54:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9350 states, 9345 states have (on average 1.4799357945425362) internal successors, (13830), 9349 states have internal predecessors, (13830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 13830 transitions. [2022-07-22 18:54:37,443 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 13830 transitions. Word has length 160 [2022-07-22 18:54:37,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:37,444 INFO L495 AbstractCegarLoop]: Abstraction has 9350 states and 13830 transitions. [2022-07-22 18:54:37,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:37,444 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 13830 transitions. [2022-07-22 18:54:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 18:54:37,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:37,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:54:37,449 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:37,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash 522123654, now seen corresponding path program 1 times [2022-07-22 18:54:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:37,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414093892] [2022-07-22 18:54:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:37,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:37,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:37,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414093892] [2022-07-22 18:54:37,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414093892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:37,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:37,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495177708] [2022-07-22 18:54:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:37,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:54:37,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:37,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:54:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:54:37,545 INFO L87 Difference]: Start difference. First operand 9350 states and 13830 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:38,833 INFO L93 Difference]: Finished difference Result 22275 states and 34095 transitions. [2022-07-22 18:54:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:38,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-07-22 18:54:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:38,856 INFO L225 Difference]: With dead ends: 22275 [2022-07-22 18:54:38,856 INFO L226 Difference]: Without dead ends: 16612 [2022-07-22 18:54:38,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:54:38,864 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1083 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:38,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1043 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:54:38,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16612 states. [2022-07-22 18:54:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16612 to 16610. [2022-07-22 18:54:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16610 states, 16605 states have (on average 1.4995483288166216) internal successors, (24900), 16609 states have internal predecessors, (24900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16610 states to 16610 states and 24900 transitions. [2022-07-22 18:54:40,359 INFO L78 Accepts]: Start accepts. Automaton has 16610 states and 24900 transitions. Word has length 161 [2022-07-22 18:54:40,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:40,359 INFO L495 AbstractCegarLoop]: Abstraction has 16610 states and 24900 transitions. [2022-07-22 18:54:40,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:40,359 INFO L276 IsEmpty]: Start isEmpty. Operand 16610 states and 24900 transitions. [2022-07-22 18:54:40,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 18:54:40,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:40,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:40,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:54:40,368 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:40,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:40,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1501052056, now seen corresponding path program 1 times [2022-07-22 18:54:40,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:40,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663769881] [2022-07-22 18:54:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:40,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:40,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:40,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663769881] [2022-07-22 18:54:40,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663769881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:40,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:40,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:40,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320753436] [2022-07-22 18:54:40,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:40,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:54:40,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:40,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:54:40,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:54:40,449 INFO L87 Difference]: Start difference. First operand 16610 states and 24900 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:43,055 INFO L93 Difference]: Finished difference Result 43376 states and 64954 transitions. [2022-07-22 18:54:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:43,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-07-22 18:54:43,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:43,102 INFO L225 Difference]: With dead ends: 43376 [2022-07-22 18:54:43,102 INFO L226 Difference]: Without dead ends: 26898 [2022-07-22 18:54:43,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:43,121 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 1180 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:43,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1560 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:43,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26898 states. [2022-07-22 18:54:45,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26898 to 26875. [2022-07-22 18:54:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26875 states, 26870 states have (on average 1.4808336434685523) internal successors, (39790), 26874 states have internal predecessors, (39790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26875 states to 26875 states and 39790 transitions. [2022-07-22 18:54:45,595 INFO L78 Accepts]: Start accepts. Automaton has 26875 states and 39790 transitions. Word has length 161 [2022-07-22 18:54:45,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:45,595 INFO L495 AbstractCegarLoop]: Abstraction has 26875 states and 39790 transitions. [2022-07-22 18:54:45,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 26875 states and 39790 transitions. [2022-07-22 18:54:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 18:54:45,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:45,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:45,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:54:45,610 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:45,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:45,610 INFO L85 PathProgramCache]: Analyzing trace with hash 965682877, now seen corresponding path program 1 times [2022-07-22 18:54:45,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:45,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021220424] [2022-07-22 18:54:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:45,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:45,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:45,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021220424] [2022-07-22 18:54:45,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021220424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:45,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:45,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:54:45,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030122040] [2022-07-22 18:54:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:45,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:54:45,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:45,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:54:45,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:54:45,704 INFO L87 Difference]: Start difference. First operand 26875 states and 39790 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:48,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:48,606 INFO L93 Difference]: Finished difference Result 47913 states and 70973 transitions. [2022-07-22 18:54:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:54:48,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2022-07-22 18:54:48,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:48,665 INFO L225 Difference]: With dead ends: 47913 [2022-07-22 18:54:48,665 INFO L226 Difference]: Without dead ends: 26875 [2022-07-22 18:54:48,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:54:48,685 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 53 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:48,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1819 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26875 states. [2022-07-22 18:54:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26875 to 26875. [2022-07-22 18:54:51,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26875 states, 26870 states have (on average 1.4807964272422776) internal successors, (39789), 26874 states have internal predecessors, (39789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26875 states to 26875 states and 39789 transitions. [2022-07-22 18:54:51,172 INFO L78 Accepts]: Start accepts. Automaton has 26875 states and 39789 transitions. Word has length 163 [2022-07-22 18:54:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:51,172 INFO L495 AbstractCegarLoop]: Abstraction has 26875 states and 39789 transitions. [2022-07-22 18:54:51,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 26875 states and 39789 transitions. [2022-07-22 18:54:51,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 18:54:51,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:51,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:51,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:54:51,184 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:51,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:51,185 INFO L85 PathProgramCache]: Analyzing trace with hash 448440634, now seen corresponding path program 1 times [2022-07-22 18:54:51,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:51,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090109889] [2022-07-22 18:54:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:51,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:51,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:51,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090109889] [2022-07-22 18:54:51,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090109889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:51,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:51,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:54:51,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744452882] [2022-07-22 18:54:51,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:51,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:54:51,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:51,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:54:51,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:51,223 INFO L87 Difference]: Start difference. First operand 26875 states and 39789 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:54:55,164 INFO L93 Difference]: Finished difference Result 67145 states and 99680 transitions. [2022-07-22 18:54:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:54:55,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2022-07-22 18:54:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:54:55,218 INFO L225 Difference]: With dead ends: 67145 [2022-07-22 18:54:55,218 INFO L226 Difference]: Without dead ends: 41804 [2022-07-22 18:54:55,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:55,240 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 519 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:54:55,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1218 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:54:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41804 states. [2022-07-22 18:54:59,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41804 to 41783. [2022-07-22 18:54:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41783 states, 41778 states have (on average 1.4628991335152473) internal successors, (61117), 41782 states have internal predecessors, (61117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41783 states to 41783 states and 61117 transitions. [2022-07-22 18:54:59,350 INFO L78 Accepts]: Start accepts. Automaton has 41783 states and 61117 transitions. Word has length 163 [2022-07-22 18:54:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:54:59,350 INFO L495 AbstractCegarLoop]: Abstraction has 41783 states and 61117 transitions. [2022-07-22 18:54:59,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:54:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 41783 states and 61117 transitions. [2022-07-22 18:54:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 18:54:59,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:54:59,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:54:59,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:54:59,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:54:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:54:59,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1989579749, now seen corresponding path program 1 times [2022-07-22 18:54:59,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:54:59,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638421325] [2022-07-22 18:54:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:54:59,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:54:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:54:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:54:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:54:59,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638421325] [2022-07-22 18:54:59,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638421325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:54:59,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:54:59,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:54:59,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113763130] [2022-07-22 18:54:59,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:54:59,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:54:59,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:54:59,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:54:59,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:54:59,403 INFO L87 Difference]: Start difference. First operand 41783 states and 61117 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:55:06,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:55:06,129 INFO L93 Difference]: Finished difference Result 99916 states and 148123 transitions. [2022-07-22 18:55:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:55:06,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2022-07-22 18:55:06,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:55:06,227 INFO L225 Difference]: With dead ends: 99916 [2022-07-22 18:55:06,227 INFO L226 Difference]: Without dead ends: 65735 [2022-07-22 18:55:06,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:55:06,260 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 314 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:55:06,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1259 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:55:06,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65735 states. [2022-07-22 18:55:12,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65735 to 59919. [2022-07-22 18:55:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59919 states, 59914 states have (on average 1.4943251994525486) internal successors, (89531), 59918 states have internal predecessors, (89531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:55:12,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59919 states to 59919 states and 89531 transitions. [2022-07-22 18:55:12,949 INFO L78 Accepts]: Start accepts. Automaton has 59919 states and 89531 transitions. Word has length 167 [2022-07-22 18:55:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:55:12,950 INFO L495 AbstractCegarLoop]: Abstraction has 59919 states and 89531 transitions. [2022-07-22 18:55:12,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:55:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 59919 states and 89531 transitions. [2022-07-22 18:55:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 18:55:12,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:55:12,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:55:12,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:55:12,965 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-22 18:55:12,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:55:12,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1583623339, now seen corresponding path program 1 times [2022-07-22 18:55:12,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:55:12,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661868212] [2022-07-22 18:55:12,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:55:12,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:55:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:55:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:55:12,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:55:12,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661868212] [2022-07-22 18:55:12,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661868212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:55:12,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:55:12,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:55:12,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750250312] [2022-07-22 18:55:12,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:55:12,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:55:12,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:55:12,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:55:12,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:55:12,997 INFO L87 Difference]: Start difference. First operand 59919 states and 89531 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:55:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:55:26,254 INFO L93 Difference]: Finished difference Result 171785 states and 258481 transitions. [2022-07-22 18:55:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:55:26,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2022-07-22 18:55:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:55:26,689 INFO L225 Difference]: With dead ends: 171785 [2022-07-22 18:55:26,690 INFO L226 Difference]: Without dead ends: 116507 [2022-07-22 18:55:26,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:55:26,770 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 501 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:55:26,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1044 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:55:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116507 states.