./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.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 54199c4744c1bc6f90b801fad85d1b6d237818e3b8e71cae069cfd39ac31a054 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:40:48,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:40:48,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:40:48,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:40:48,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:40:48,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:40:48,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:40:48,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:40:48,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:40:48,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:40:48,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:40:48,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:40:48,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:40:48,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:40:48,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:40:48,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:40:48,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:40:48,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:40:48,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:40:48,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:40:48,408 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:40:48,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:40:48,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:40:48,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:40:48,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:40:48,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:40:48,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:40:48,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:40:48,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:40:48,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:40:48,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:40:48,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:40:48,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:40:48,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:40:48,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:40:48,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:40:48,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:40:48,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:40:48,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:40:48,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:40:48,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:40:48,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:40:48,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:40:48,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:40:48,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:40:48,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:40:48,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:40:48,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:40:48,459 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:40:48,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:40:48,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:40:48,460 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:40:48,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:40:48,461 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:40:48,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:40:48,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:40:48,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:40:48,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:40:48,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:40:48,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:40:48,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:40:48,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:40:48,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:40:48,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:40:48,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:40:48,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:40:48,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:40:48,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:40:48,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:40:48,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:40:48,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:40:48,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:40:48,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:40:48,466 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:40:48,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:40:48,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:40:48,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54199c4744c1bc6f90b801fad85d1b6d237818e3b8e71cae069cfd39ac31a054 [2022-07-19 18:40:48,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:40:48,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:40:48,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:40:48,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:40:48,706 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:40:48,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:40:48,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aad88ad6e/05014254c2134fe89ca7eb0ad5b3989e/FLAGa3dcfc2f6 [2022-07-19 18:40:49,272 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:40:49,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:40:49,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aad88ad6e/05014254c2134fe89ca7eb0ad5b3989e/FLAGa3dcfc2f6 [2022-07-19 18:40:49,566 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aad88ad6e/05014254c2134fe89ca7eb0ad5b3989e [2022-07-19 18:40:49,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:40:49,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:40:49,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:40:49,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:40:49,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:40:49,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:40:49" (1/1) ... [2022-07-19 18:40:49,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f4bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:49, skipping insertion in model container [2022-07-19 18:40:49,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:40:49" (1/1) ... [2022-07-19 18:40:49,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:40:49,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:40:49,920 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15593,15606] [2022-07-19 18:40:49,930 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16240,16253] [2022-07-19 18:40:49,944 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17624,17637] [2022-07-19 18:40:49,953 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18600,18613] [2022-07-19 18:40:50,004 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27965,27978] [2022-07-19 18:40:50,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:40:50,073 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:40:50,225 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15593,15606] [2022-07-19 18:40:50,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16240,16253] [2022-07-19 18:40:50,252 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17624,17637] [2022-07-19 18:40:50,258 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18600,18613] [2022-07-19 18:40:50,294 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27965,27978] [2022-07-19 18:40:50,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:40:50,354 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:40:50,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50 WrapperNode [2022-07-19 18:40:50,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:40:50,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:40:50,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:40:50,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:40:50,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,436 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1696 [2022-07-19 18:40:50,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:40:50,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:40:50,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:40:50,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:40:50,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:40:50,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:40:50,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:40:50,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:40:50,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (1/1) ... [2022-07-19 18:40:50,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:40:50,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:40:50,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 18:40:50,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 18:40:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:40:50,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:40:50,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:40:50,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:40:50,728 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:40:50,729 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:40:51,792 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:40:51,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:40:51,809 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:40:51,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:40:51 BoogieIcfgContainer [2022-07-19 18:40:51,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:40:51,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:40:51,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:40:51,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:40:51,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:40:49" (1/3) ... [2022-07-19 18:40:51,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43377500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:40:51, skipping insertion in model container [2022-07-19 18:40:51,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:40:50" (2/3) ... [2022-07-19 18:40:51,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43377500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:40:51, skipping insertion in model container [2022-07-19 18:40:51,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:40:51" (3/3) ... [2022-07-19 18:40:51,823 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-07-19 18:40:51,839 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:40:51,839 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-07-19 18:40:51,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:40:51,916 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@1214393f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@38077932 [2022-07-19 18:40:51,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-19 18:40:51,924 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) [2022-07-19 18:40:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 18:40:51,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:51,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:40:51,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:51,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1209893175, now seen corresponding path program 1 times [2022-07-19 18:40:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:51,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819059220] [2022-07-19 18:40:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:52,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:52,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819059220] [2022-07-19 18:40:52,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819059220] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:52,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:52,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:52,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939689536] [2022-07-19 18:40:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:52,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:52,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:52,552 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) [2022-07-19 18:40:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:52,738 INFO L93 Difference]: Finished difference Result 778 states and 1366 transitions. [2022-07-19 18:40:52,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:52,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-07-19 18:40:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:52,767 INFO L225 Difference]: With dead ends: 778 [2022-07-19 18:40:52,767 INFO L226 Difference]: Without dead ends: 612 [2022-07-19 18:40:52,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:52,776 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 446 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:52,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 1365 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:40:52,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-07-19 18:40:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 610. [2022-07-19 18:40:52,851 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) [2022-07-19 18:40:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 895 transitions. [2022-07-19 18:40:52,854 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 895 transitions. Word has length 150 [2022-07-19 18:40:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:52,855 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 895 transitions. [2022-07-19 18:40:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:52,856 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 895 transitions. [2022-07-19 18:40:52,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 18:40:52,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:52,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:40:52,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:40:52,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:52,861 INFO L85 PathProgramCache]: Analyzing trace with hash 811877431, now seen corresponding path program 1 times [2022-07-19 18:40:52,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:52,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035508850] [2022-07-19 18:40:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:52,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:52,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:52,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035508850] [2022-07-19 18:40:52,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035508850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:52,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:52,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:52,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671386941] [2022-07-19 18:40:52,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:52,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:52,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:52,978 INFO L87 Difference]: Start difference. First operand 610 states and 895 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:53,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:53,123 INFO L93 Difference]: Finished difference Result 1235 states and 1870 transitions. [2022-07-19 18:40:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:53,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-07-19 18:40:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:53,131 INFO L225 Difference]: With dead ends: 1235 [2022-07-19 18:40:53,131 INFO L226 Difference]: Without dead ends: 1012 [2022-07-19 18:40:53,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:53,136 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 369 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:53,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1122 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:40:53,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-07-19 18:40:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1010. [2022-07-19 18:40:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 1005 states have (on average 1.499502487562189) internal successors, (1507), 1009 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1507 transitions. [2022-07-19 18:40:53,192 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1507 transitions. Word has length 150 [2022-07-19 18:40:53,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:53,194 INFO L495 AbstractCegarLoop]: Abstraction has 1010 states and 1507 transitions. [2022-07-19 18:40:53,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:53,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1507 transitions. [2022-07-19 18:40:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 18:40:53,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:53,205 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:40:53,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:40:53,208 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:53,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash 811446455, now seen corresponding path program 1 times [2022-07-19 18:40:53,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:53,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445523893] [2022-07-19 18:40:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:53,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:53,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:53,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445523893] [2022-07-19 18:40:53,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445523893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:53,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:53,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:40:53,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255033068] [2022-07-19 18:40:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:53,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:40:53,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:53,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:40:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:40:53,441 INFO L87 Difference]: Start difference. First operand 1010 states and 1507 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) [2022-07-19 18:40:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:53,608 INFO L93 Difference]: Finished difference Result 2960 states and 4404 transitions. [2022-07-19 18:40:53,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:53,609 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 [2022-07-19 18:40:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:53,617 INFO L225 Difference]: With dead ends: 2960 [2022-07-19 18:40:53,617 INFO L226 Difference]: Without dead ends: 1959 [2022-07-19 18:40:53,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:40:53,620 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 [2022-07-19 18:40:53,621 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] [2022-07-19 18:40:53,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2022-07-19 18:40:53,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1917. [2022-07-19 18:40:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1912 states have (on average 1.487970711297071) internal successors, (2845), 1916 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2845 transitions. [2022-07-19 18:40:53,746 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2845 transitions. Word has length 150 [2022-07-19 18:40:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:53,746 INFO L495 AbstractCegarLoop]: Abstraction has 1917 states and 2845 transitions. [2022-07-19 18:40:53,747 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) [2022-07-19 18:40:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2845 transitions. [2022-07-19 18:40:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-19 18:40:53,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:53,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:40:53,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:40:53,750 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:53,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:53,751 INFO L85 PathProgramCache]: Analyzing trace with hash -855435253, now seen corresponding path program 1 times [2022-07-19 18:40:53,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:53,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508963316] [2022-07-19 18:40:53,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:53,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:53,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:53,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508963316] [2022-07-19 18:40:53,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508963316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:53,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:53,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:53,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694252712] [2022-07-19 18:40:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:53,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:53,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:53,795 INFO L87 Difference]: Start difference. First operand 1917 states and 2845 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) [2022-07-19 18:40:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:54,052 INFO L93 Difference]: Finished difference Result 5713 states and 8473 transitions. [2022-07-19 18:40:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:54,052 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 [2022-07-19 18:40:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:54,066 INFO L225 Difference]: With dead ends: 5713 [2022-07-19 18:40:54,067 INFO L226 Difference]: Without dead ends: 3824 [2022-07-19 18:40:54,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:54,077 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 [2022-07-19 18:40:54,079 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] [2022-07-19 18:40:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2022-07-19 18:40:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 1919. [2022-07-19 18:40:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1914 states have (on average 1.4874608150470219) internal successors, (2847), 1918 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2847 transitions. [2022-07-19 18:40:54,241 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2847 transitions. Word has length 151 [2022-07-19 18:40:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:54,241 INFO L495 AbstractCegarLoop]: Abstraction has 1919 states and 2847 transitions. [2022-07-19 18:40:54,241 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) [2022-07-19 18:40:54,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2847 transitions. [2022-07-19 18:40:54,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 18:40:54,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:54,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:40:54,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:40:54,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:54,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:54,245 INFO L85 PathProgramCache]: Analyzing trace with hash 299372728, now seen corresponding path program 1 times [2022-07-19 18:40:54,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:54,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894681503] [2022-07-19 18:40:54,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:54,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:54,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:54,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894681503] [2022-07-19 18:40:54,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894681503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:54,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:54,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:40:54,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384429148] [2022-07-19 18:40:54,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:54,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:40:54,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:54,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:40:54,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:40:54,401 INFO L87 Difference]: Start difference. First operand 1919 states and 2847 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) [2022-07-19 18:40:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:54,745 INFO L93 Difference]: Finished difference Result 5591 states and 8265 transitions. [2022-07-19 18:40:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:54,746 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 [2022-07-19 18:40:54,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:54,760 INFO L225 Difference]: With dead ends: 5591 [2022-07-19 18:40:54,760 INFO L226 Difference]: Without dead ends: 3702 [2022-07-19 18:40:54,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:40:54,766 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 1197 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:54,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1603 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2022-07-19 18:40:55,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3660. [2022-07-19 18:40:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3660 states, 3655 states have (on average 1.4722298221614227) internal successors, (5381), 3659 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5381 transitions. [2022-07-19 18:40:55,107 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5381 transitions. Word has length 152 [2022-07-19 18:40:55,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:55,107 INFO L495 AbstractCegarLoop]: Abstraction has 3660 states and 5381 transitions. [2022-07-19 18:40:55,107 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) [2022-07-19 18:40:55,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5381 transitions. [2022-07-19 18:40:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 18:40:55,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:55,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:40:55,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:40:55,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1884643476, now seen corresponding path program 1 times [2022-07-19 18:40:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:55,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122596218] [2022-07-19 18:40:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:55,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:55,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122596218] [2022-07-19 18:40:55,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122596218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:55,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:55,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692607208] [2022-07-19 18:40:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:55,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:55,161 INFO L87 Difference]: Start difference. First operand 3660 states and 5381 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) [2022-07-19 18:40:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:55,623 INFO L93 Difference]: Finished difference Result 10904 states and 16023 transitions. [2022-07-19 18:40:55,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:55,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-07-19 18:40:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:55,648 INFO L225 Difference]: With dead ends: 10904 [2022-07-19 18:40:55,649 INFO L226 Difference]: Without dead ends: 7288 [2022-07-19 18:40:55,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:55,656 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 [2022-07-19 18:40:55,656 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] [2022-07-19 18:40:55,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7288 states. [2022-07-19 18:40:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7288 to 3664. [2022-07-19 18:40:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3659 states have (on average 1.47171358294616) internal successors, (5385), 3663 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 5385 transitions. [2022-07-19 18:40:56,044 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 5385 transitions. Word has length 153 [2022-07-19 18:40:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:56,044 INFO L495 AbstractCegarLoop]: Abstraction has 3664 states and 5385 transitions. [2022-07-19 18:40:56,044 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) [2022-07-19 18:40:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 5385 transitions. [2022-07-19 18:40:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 18:40:56,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:56,049 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] [2022-07-19 18:40:56,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:40:56,050 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash -2086443719, now seen corresponding path program 1 times [2022-07-19 18:40:56,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:56,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069196211] [2022-07-19 18:40:56,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:56,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:56,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:56,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069196211] [2022-07-19 18:40:56,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069196211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:56,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:56,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:40:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978625716] [2022-07-19 18:40:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:56,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:40:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:56,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:40:56,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:40:56,202 INFO L87 Difference]: Start difference. First operand 3664 states and 5385 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) [2022-07-19 18:40:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:56,790 INFO L93 Difference]: Finished difference Result 9919 states and 14516 transitions. [2022-07-19 18:40:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:40:56,790 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 [2022-07-19 18:40:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:56,829 INFO L225 Difference]: With dead ends: 9919 [2022-07-19 18:40:56,829 INFO L226 Difference]: Without dead ends: 6303 [2022-07-19 18:40:56,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:40:56,837 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 1418 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:40:56,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 1369 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:40:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-07-19 18:40:57,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 6261. [2022-07-19 18:40:57,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6261 states, 6256 states have (on average 1.45076726342711) internal successors, (9076), 6260 states have internal predecessors, (9076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6261 states to 6261 states and 9076 transitions. [2022-07-19 18:40:57,489 INFO L78 Accepts]: Start accepts. Automaton has 6261 states and 9076 transitions. Word has length 154 [2022-07-19 18:40:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:57,490 INFO L495 AbstractCegarLoop]: Abstraction has 6261 states and 9076 transitions. [2022-07-19 18:40:57,490 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) [2022-07-19 18:40:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 6261 states and 9076 transitions. [2022-07-19 18:40:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-19 18:40:57,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:57,501 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] [2022-07-19 18:40:57,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:40:57,502 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:57,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:57,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1188564147, now seen corresponding path program 1 times [2022-07-19 18:40:57,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:57,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326316929] [2022-07-19 18:40:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:57,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:57,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326316929] [2022-07-19 18:40:57,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326316929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:57,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:57,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:40:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388047813] [2022-07-19 18:40:57,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:57,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:40:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:40:57,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:57,548 INFO L87 Difference]: Start difference. First operand 6261 states and 9076 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) [2022-07-19 18:40:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:40:58,527 INFO L93 Difference]: Finished difference Result 18351 states and 26650 transitions. [2022-07-19 18:40:58,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:40:58,528 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 [2022-07-19 18:40:58,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:40:58,555 INFO L225 Difference]: With dead ends: 18351 [2022-07-19 18:40:58,556 INFO L226 Difference]: Without dead ends: 12430 [2022-07-19 18:40:58,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:40:58,566 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 [2022-07-19 18:40:58,567 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] [2022-07-19 18:40:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12430 states. [2022-07-19 18:40:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12430 to 6269. [2022-07-19 18:40:59,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6269 states, 6264 states have (on average 1.450191570881226) internal successors, (9084), 6268 states have internal predecessors, (9084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:40:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 9084 transitions. [2022-07-19 18:40:59,134 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 9084 transitions. Word has length 155 [2022-07-19 18:40:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:40:59,135 INFO L495 AbstractCegarLoop]: Abstraction has 6269 states and 9084 transitions. [2022-07-19 18:40:59,135 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) [2022-07-19 18:40:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 9084 transitions. [2022-07-19 18:40:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 18:40:59,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:40:59,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:40:59,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:40:59,144 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:40:59,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:40:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1615046538, now seen corresponding path program 1 times [2022-07-19 18:40:59,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:40:59,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296053532] [2022-07-19 18:40:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:40:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:40:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:40:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:40:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:40:59,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296053532] [2022-07-19 18:40:59,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296053532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:40:59,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:40:59,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:40:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364089747] [2022-07-19 18:40:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:40:59,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:40:59,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:40:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:40:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:40:59,262 INFO L87 Difference]: Start difference. First operand 6269 states and 9084 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) [2022-07-19 18:41:00,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:00,630 INFO L93 Difference]: Finished difference Result 18287 states and 26409 transitions. [2022-07-19 18:41:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:41:00,631 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 [2022-07-19 18:41:00,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:00,658 INFO L225 Difference]: With dead ends: 18287 [2022-07-19 18:41:00,658 INFO L226 Difference]: Without dead ends: 12106 [2022-07-19 18:41:00,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:41:00,671 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 1786 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:00,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 1585 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:41:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12106 states. [2022-07-19 18:41:01,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12106 to 12064. [2022-07-19 18:41:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12064 states, 12059 states have (on average 1.431793681068082) internal successors, (17266), 12063 states have internal predecessors, (17266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12064 states to 12064 states and 17266 transitions. [2022-07-19 18:41:01,576 INFO L78 Accepts]: Start accepts. Automaton has 12064 states and 17266 transitions. Word has length 156 [2022-07-19 18:41:01,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:01,577 INFO L495 AbstractCegarLoop]: Abstraction has 12064 states and 17266 transitions. [2022-07-19 18:41:01,577 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) [2022-07-19 18:41:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 12064 states and 17266 transitions. [2022-07-19 18:41:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 18:41:01,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:01,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:01,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:41:01,595 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:41:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash 625143354, now seen corresponding path program 1 times [2022-07-19 18:41:01,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:01,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721101239] [2022-07-19 18:41:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:01,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:01,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:01,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721101239] [2022-07-19 18:41:01,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721101239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:01,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:01,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:41:01,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263319253] [2022-07-19 18:41:01,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:01,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:41:01,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:01,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:41:01,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:41:01,693 INFO L87 Difference]: Start difference. First operand 12064 states and 17266 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) [2022-07-19 18:41:02,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:02,447 INFO L93 Difference]: Finished difference Result 21241 states and 30375 transitions. [2022-07-19 18:41:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:41:02,448 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 [2022-07-19 18:41:02,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:02,468 INFO L225 Difference]: With dead ends: 21241 [2022-07-19 18:41:02,469 INFO L226 Difference]: Without dead ends: 9251 [2022-07-19 18:41:02,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:41:02,490 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 [2022-07-19 18:41:02,491 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] [2022-07-19 18:41:02,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9251 states. [2022-07-19 18:41:03,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9251 to 9251. [2022-07-19 18:41:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9251 states, 9246 states have (on average 1.428942245295263) internal successors, (13212), 9250 states have internal predecessors, (13212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9251 states to 9251 states and 13212 transitions. [2022-07-19 18:41:03,179 INFO L78 Accepts]: Start accepts. Automaton has 9251 states and 13212 transitions. Word has length 156 [2022-07-19 18:41:03,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:03,179 INFO L495 AbstractCegarLoop]: Abstraction has 9251 states and 13212 transitions. [2022-07-19 18:41:03,180 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) [2022-07-19 18:41:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 9251 states and 13212 transitions. [2022-07-19 18:41:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-19 18:41:03,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:03,192 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] [2022-07-19 18:41:03,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 18:41:03,193 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:41:03,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:03,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2020914348, now seen corresponding path program 1 times [2022-07-19 18:41:03,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:03,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112370628] [2022-07-19 18:41:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:03,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:03,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112370628] [2022-07-19 18:41:03,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112370628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:03,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:03,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:03,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795313933] [2022-07-19 18:41:03,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:03,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:03,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:03,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:03,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:03,235 INFO L87 Difference]: Start difference. First operand 9251 states and 13212 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) [2022-07-19 18:41:04,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:04,570 INFO L93 Difference]: Finished difference Result 22836 states and 33228 transitions. [2022-07-19 18:41:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:04,571 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 [2022-07-19 18:41:04,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:04,605 INFO L225 Difference]: With dead ends: 22836 [2022-07-19 18:41:04,605 INFO L226 Difference]: Without dead ends: 14197 [2022-07-19 18:41:04,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:04,625 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 [2022-07-19 18:41:04,626 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] [2022-07-19 18:41:04,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14197 states. [2022-07-19 18:41:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14197 to 12165. [2022-07-19 18:41:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12165 states, 12160 states have (on average 1.4734375) internal successors, (17917), 12164 states have internal predecessors, (17917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12165 states to 12165 states and 17917 transitions. [2022-07-19 18:41:05,612 INFO L78 Accepts]: Start accepts. Automaton has 12165 states and 17917 transitions. Word has length 158 [2022-07-19 18:41:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:05,612 INFO L495 AbstractCegarLoop]: Abstraction has 12165 states and 17917 transitions. [2022-07-19 18:41:05,612 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) [2022-07-19 18:41:05,612 INFO L276 IsEmpty]: Start isEmpty. Operand 12165 states and 17917 transitions. [2022-07-19 18:41:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 18:41:05,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:05,624 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] [2022-07-19 18:41:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 18:41:05,625 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:41:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1799463421, now seen corresponding path program 1 times [2022-07-19 18:41:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:05,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085147520] [2022-07-19 18:41:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:05,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:05,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085147520] [2022-07-19 18:41:05,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085147520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:05,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:05,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:41:05,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754706738] [2022-07-19 18:41:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:05,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:41:05,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:05,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:41:05,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:05,671 INFO L87 Difference]: Start difference. First operand 12165 states and 17917 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) [2022-07-19 18:41:07,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:07,183 INFO L93 Difference]: Finished difference Result 28249 states and 42327 transitions. [2022-07-19 18:41:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:41:07,184 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 [2022-07-19 18:41:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:07,213 INFO L225 Difference]: With dead ends: 28249 [2022-07-19 18:41:07,213 INFO L226 Difference]: Without dead ends: 18499 [2022-07-19 18:41:07,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:41:07,231 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 [2022-07-19 18:41:07,232 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] [2022-07-19 18:41:07,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18499 states. [2022-07-19 18:41:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18499 to 16601. [2022-07-19 18:41:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16601 states, 16596 states have (on average 1.5057242709086527) internal successors, (24989), 16600 states have internal predecessors, (24989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16601 states to 16601 states and 24989 transitions. [2022-07-19 18:41:08,584 INFO L78 Accepts]: Start accepts. Automaton has 16601 states and 24989 transitions. Word has length 160 [2022-07-19 18:41:08,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:08,585 INFO L495 AbstractCegarLoop]: Abstraction has 16601 states and 24989 transitions. [2022-07-19 18:41:08,585 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) [2022-07-19 18:41:08,585 INFO L276 IsEmpty]: Start isEmpty. Operand 16601 states and 24989 transitions. [2022-07-19 18:41:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 18:41:08,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:08,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:41:08,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 18:41:08,596 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:41:08,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:08,597 INFO L85 PathProgramCache]: Analyzing trace with hash 541164788, now seen corresponding path program 1 times [2022-07-19 18:41:08,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:08,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583944623] [2022-07-19 18:41:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:08,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:08,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:08,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583944623] [2022-07-19 18:41:08,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583944623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:08,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:08,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:41:08,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034503473] [2022-07-19 18:41:08,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:08,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:41:08,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:08,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:41:08,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:41:08,742 INFO L87 Difference]: Start difference. First operand 16601 states and 24989 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 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) [2022-07-19 18:41:16,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:16,600 INFO L93 Difference]: Finished difference Result 83311 states and 127734 transitions. [2022-07-19 18:41:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 18:41:16,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 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 [2022-07-19 18:41:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:16,858 INFO L225 Difference]: With dead ends: 83311 [2022-07-19 18:41:16,858 INFO L226 Difference]: Without dead ends: 67460 [2022-07-19 18:41:16,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-07-19 18:41:16,886 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 6697 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6697 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:16,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6697 Valid, 2795 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 18:41:16,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67460 states. [2022-07-19 18:41:21,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67460 to 44914. [2022-07-19 18:41:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44914 states, 44909 states have (on average 1.5069139816072503) internal successors, (67674), 44913 states have internal predecessors, (67674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:22,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44914 states to 44914 states and 67674 transitions. [2022-07-19 18:41:22,139 INFO L78 Accepts]: Start accepts. Automaton has 44914 states and 67674 transitions. Word has length 161 [2022-07-19 18:41:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:22,140 INFO L495 AbstractCegarLoop]: Abstraction has 44914 states and 67674 transitions. [2022-07-19 18:41:22,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 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) [2022-07-19 18:41:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 44914 states and 67674 transitions. [2022-07-19 18:41:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 18:41:22,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:22,160 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] [2022-07-19 18:41:22,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 18:41:22,160 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:41:22,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:22,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1621225530, now seen corresponding path program 1 times [2022-07-19 18:41:22,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:22,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654538493] [2022-07-19 18:41:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:22,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:22,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:22,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654538493] [2022-07-19 18:41:22,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654538493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:22,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:22,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:41:22,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321919470] [2022-07-19 18:41:22,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:22,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:41:22,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:22,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:41:22,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:41:22,294 INFO L87 Difference]: Start difference. First operand 44914 states and 67674 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) [2022-07-19 18:41:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:41:28,302 INFO L93 Difference]: Finished difference Result 86497 states and 133603 transitions. [2022-07-19 18:41:28,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:41:28,303 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 [2022-07-19 18:41:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:41:28,392 INFO L225 Difference]: With dead ends: 86497 [2022-07-19 18:41:28,392 INFO L226 Difference]: Without dead ends: 53914 [2022-07-19 18:41:28,426 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 [2022-07-19 18:41:28,427 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1069 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:41:28,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1043 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:41:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53914 states. [2022-07-19 18:41:34,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53914 to 53912. [2022-07-19 18:41:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53912 states, 53907 states have (on average 1.5108241972285603) internal successors, (81444), 53911 states have internal predecessors, (81444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:41:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53912 states to 53912 states and 81444 transitions. [2022-07-19 18:41:34,774 INFO L78 Accepts]: Start accepts. Automaton has 53912 states and 81444 transitions. Word has length 161 [2022-07-19 18:41:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:41:34,774 INFO L495 AbstractCegarLoop]: Abstraction has 53912 states and 81444 transitions. [2022-07-19 18:41:34,774 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) [2022-07-19 18:41:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 53912 states and 81444 transitions. [2022-07-19 18:41:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 18:41:34,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:41:34,789 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] [2022-07-19 18:41:34,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 18:41:34,789 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-07-19 18:41:34,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:41:34,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1317025973, now seen corresponding path program 1 times [2022-07-19 18:41:34,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:41:34,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41565613] [2022-07-19 18:41:34,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:41:34,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:41:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:41:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:41:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:41:34,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41565613] [2022-07-19 18:41:34,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41565613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:41:34,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:41:34,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:41:34,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640484500] [2022-07-19 18:41:34,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:41:34,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:41:34,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:41:34,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:41:34,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:41:34,883 INFO L87 Difference]: Start difference. First operand 53912 states and 81444 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)