./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-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_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-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 52f505c2033e0aec4a19441e3af9fb9949b71da33ecc0d15d8cd0b9d7a123c92 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:26:25,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:26:25,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:26:25,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:26:25,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:26:25,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:26:25,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:26:25,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:26:25,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:26:25,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:26:25,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:26:25,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:26:25,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:26:25,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:26:25,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:26:25,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:26:25,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:26:25,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:26:25,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:26:25,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:26:25,391 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:26:25,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:26:25,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:26:25,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:26:25,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:26:25,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:26:25,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:26:25,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:26:25,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:26:25,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:26:25,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:26:25,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:26:25,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:26:25,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:26:25,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:26:25,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:26:25,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:26:25,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:26:25,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:26:25,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:26:25,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:26:25,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:26:25,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:26:25,434 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:26:25,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:26:25,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:26:25,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:26:25,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:26:25,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:26:25,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:26:25,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:26:25,437 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:26:25,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:26:25,437 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:26:25,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:26:25,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:26:25,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:26:25,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:26:25,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:26:25,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:26:25,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:26:25,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:26:25,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:26:25,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:26:25,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:26:25,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:26:25,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:26:25,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:26:25,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:26:25,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:26:25,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:26:25,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:26:25,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:26:25,441 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:26:25,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:26:25,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:26:25,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52f505c2033e0aec4a19441e3af9fb9949b71da33ecc0d15d8cd0b9d7a123c92 [2022-07-19 18:26:25,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:26:25,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:26:25,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:26:25,617 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:26:25,618 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:26:25,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:26:25,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e695ccaa/7c6f15e86d1e46feb22915ecf046e4bc/FLAG3c88115d3 [2022-07-19 18:26:26,039 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:26:26,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:26:26,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e695ccaa/7c6f15e86d1e46feb22915ecf046e4bc/FLAG3c88115d3 [2022-07-19 18:26:26,062 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e695ccaa/7c6f15e86d1e46feb22915ecf046e4bc [2022-07-19 18:26:26,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:26:26,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:26:26,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:26:26,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:26:26,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:26:26,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381f6516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26, skipping insertion in model container [2022-07-19 18:26:26,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:26:26,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:26:26,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7836,7849] [2022-07-19 18:26:26,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:26:26,357 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:26:26,385 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7836,7849] [2022-07-19 18:26:26,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:26:26,411 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:26:26,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26 WrapperNode [2022-07-19 18:26:26,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:26:26,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:26:26,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:26:26,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:26:26,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,445 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 618 [2022-07-19 18:26:26,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:26:26,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:26:26,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:26:26,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:26:26,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:26:26,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:26:26,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:26:26,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:26:26,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (1/1) ... [2022-07-19 18:26:26,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:26:26,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:26:26,505 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 18:26:26,507 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 18:26:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:26:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:26:26,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:26:26,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:26:26,622 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:26:26,623 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:26:27,037 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:26:27,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:26:27,042 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 18:26:27,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:26:27 BoogieIcfgContainer [2022-07-19 18:26:27,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:26:27,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:26:27,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:26:27,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:26:27,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:26:26" (1/3) ... [2022-07-19 18:26:27,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc750ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:26:27, skipping insertion in model container [2022-07-19 18:26:27,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:26:26" (2/3) ... [2022-07-19 18:26:27,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc750ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:26:27, skipping insertion in model container [2022-07-19 18:26:27,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:26:27" (3/3) ... [2022-07-19 18:26:27,052 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-19 18:26:27,062 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:26:27,065 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 18:26:27,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:26:27,113 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@293109d6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1cd758e9 [2022-07-19 18:26:27,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 18:26:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7551020408163265) internal successors, (258), 148 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 18:26:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-19 18:26:27,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:27,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:27,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1577999170, now seen corresponding path program 1 times [2022-07-19 18:26:27,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:27,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83342145] [2022-07-19 18:26:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:27,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:27,514 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 18:26:27,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:27,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83342145] [2022-07-19 18:26:27,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83342145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:27,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:27,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:27,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378800776] [2022-07-19 18:26:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:27,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:27,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:27,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:27,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:27,544 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7551020408163265) internal successors, (258), 148 states have internal predecessors, (258), 0 states have call successors, (0), 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 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:27,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:27,878 INFO L93 Difference]: Finished difference Result 832 states and 1345 transitions. [2022-07-19 18:26:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:26:27,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-19 18:26:27,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:27,900 INFO L225 Difference]: With dead ends: 832 [2022-07-19 18:26:27,900 INFO L226 Difference]: Without dead ends: 750 [2022-07-19 18:26:27,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-19 18:26:27,906 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1621 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:27,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1874 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:27,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-07-19 18:26:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 226. [2022-07-19 18:26:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.4622222222222223) internal successors, (329), 225 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 18:26:27,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 329 transitions. [2022-07-19 18:26:27,957 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 329 transitions. Word has length 75 [2022-07-19 18:26:27,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:27,958 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 329 transitions. [2022-07-19 18:26:27,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 329 transitions. [2022-07-19 18:26:27,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:26:27,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:27,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:27,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:26:27,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:27,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:27,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1882204162, now seen corresponding path program 1 times [2022-07-19 18:26:27,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:27,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853352273] [2022-07-19 18:26:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:28,134 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 18:26:28,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:28,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853352273] [2022-07-19 18:26:28,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853352273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:28,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:28,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:28,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633033701] [2022-07-19 18:26:28,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:28,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:28,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:28,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:28,140 INFO L87 Difference]: Start difference. First operand 226 states and 329 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:28,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:28,293 INFO L93 Difference]: Finished difference Result 921 states and 1431 transitions. [2022-07-19 18:26:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:28,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:26:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:28,297 INFO L225 Difference]: With dead ends: 921 [2022-07-19 18:26:28,297 INFO L226 Difference]: Without dead ends: 801 [2022-07-19 18:26:28,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:26:28,302 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1028 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:28,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1248 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-07-19 18:26:28,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 355. [2022-07-19 18:26:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.5112994350282485) internal successors, (535), 354 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 18:26:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 535 transitions. [2022-07-19 18:26:28,348 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 535 transitions. Word has length 77 [2022-07-19 18:26:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:28,350 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 535 transitions. [2022-07-19 18:26:28,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:28,351 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 535 transitions. [2022-07-19 18:26:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:26:28,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:28,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:28,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:26:28,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:28,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:28,358 INFO L85 PathProgramCache]: Analyzing trace with hash -120044916, now seen corresponding path program 1 times [2022-07-19 18:26:28,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:28,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915395186] [2022-07-19 18:26:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:28,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:28,481 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 18:26:28,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:28,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915395186] [2022-07-19 18:26:28,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915395186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:28,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:28,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:28,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142162313] [2022-07-19 18:26:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:28,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:28,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:28,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:28,485 INFO L87 Difference]: Start difference. First operand 355 states and 535 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:28,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:28,642 INFO L93 Difference]: Finished difference Result 1045 states and 1629 transitions. [2022-07-19 18:26:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:28,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:26:28,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:28,647 INFO L225 Difference]: With dead ends: 1045 [2022-07-19 18:26:28,647 INFO L226 Difference]: Without dead ends: 925 [2022-07-19 18:26:28,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:26:28,655 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1295 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:28,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1056 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:28,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-07-19 18:26:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 538. [2022-07-19 18:26:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.5400372439478585) internal successors, (827), 537 states have internal predecessors, (827), 0 states have call successors, (0), 0 states 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 18:26:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 827 transitions. [2022-07-19 18:26:28,705 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 827 transitions. Word has length 77 [2022-07-19 18:26:28,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:28,706 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 827 transitions. [2022-07-19 18:26:28,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 827 transitions. [2022-07-19 18:26:28,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:26:28,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:28,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:28,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:26:28,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:28,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1696566079, now seen corresponding path program 1 times [2022-07-19 18:26:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:28,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871429544] [2022-07-19 18:26:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:28,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:28,875 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 18:26:28,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:28,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871429544] [2022-07-19 18:26:28,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871429544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:28,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:28,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671319413] [2022-07-19 18:26:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:28,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:28,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:28,877 INFO L87 Difference]: Start difference. First operand 538 states and 827 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:29,039 INFO L93 Difference]: Finished difference Result 955 states and 1491 transitions. [2022-07-19 18:26:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:29,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:26:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:29,043 INFO L225 Difference]: With dead ends: 955 [2022-07-19 18:26:29,043 INFO L226 Difference]: Without dead ends: 540 [2022-07-19 18:26:29,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:26:29,049 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 352 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:29,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 808 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:29,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-19 18:26:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 538. [2022-07-19 18:26:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.5325884543761639) internal successors, (823), 537 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 18:26:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 823 transitions. [2022-07-19 18:26:29,086 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 823 transitions. Word has length 77 [2022-07-19 18:26:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:29,086 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 823 transitions. [2022-07-19 18:26:29,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 823 transitions. [2022-07-19 18:26:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:26:29,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:29,087 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:29,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:26:29,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:29,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1904417886, now seen corresponding path program 1 times [2022-07-19 18:26:29,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:29,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66959554] [2022-07-19 18:26:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:29,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:29,137 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 18:26:29,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:29,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66959554] [2022-07-19 18:26:29,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66959554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:29,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:29,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:26:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103206984] [2022-07-19 18:26:29,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:29,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:26:29,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:26:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:26:29,140 INFO L87 Difference]: Start difference. First operand 538 states and 823 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:29,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:29,229 INFO L93 Difference]: Finished difference Result 1323 states and 2066 transitions. [2022-07-19 18:26:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:26:29,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:26:29,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:29,233 INFO L225 Difference]: With dead ends: 1323 [2022-07-19 18:26:29,233 INFO L226 Difference]: Without dead ends: 908 [2022-07-19 18:26:29,234 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 18:26:29,235 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 83 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:29,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 467 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-07-19 18:26:29,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 892. [2022-07-19 18:26:29,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.5387205387205387) internal successors, (1371), 891 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states 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 18:26:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1371 transitions. [2022-07-19 18:26:29,306 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1371 transitions. Word has length 77 [2022-07-19 18:26:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:29,307 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1371 transitions. [2022-07-19 18:26:29,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:29,309 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1371 transitions. [2022-07-19 18:26:29,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:26:29,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:29,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:29,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 18:26:29,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:29,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1745860562, now seen corresponding path program 1 times [2022-07-19 18:26:29,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:29,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193333855] [2022-07-19 18:26:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:29,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:29,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:29,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193333855] [2022-07-19 18:26:29,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193333855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:29,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:29,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:29,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784324212] [2022-07-19 18:26:29,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:29,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:29,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:29,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:29,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:29,388 INFO L87 Difference]: Start difference. First operand 892 states and 1371 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:29,611 INFO L93 Difference]: Finished difference Result 2023 states and 3143 transitions. [2022-07-19 18:26:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:29,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:26:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:29,616 INFO L225 Difference]: With dead ends: 2023 [2022-07-19 18:26:29,617 INFO L226 Difference]: Without dead ends: 1802 [2022-07-19 18:26:29,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:26:29,618 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1037 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:29,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1397 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:29,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-07-19 18:26:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1112. [2022-07-19 18:26:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 1.5445544554455446) internal successors, (1716), 1111 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states 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 18:26:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1716 transitions. [2022-07-19 18:26:29,697 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1716 transitions. Word has length 77 [2022-07-19 18:26:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:29,697 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1716 transitions. [2022-07-19 18:26:29,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1716 transitions. [2022-07-19 18:26:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:26:29,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:29,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 18:26:29,698 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:29,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1856951880, now seen corresponding path program 1 times [2022-07-19 18:26:29,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:29,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315193727] [2022-07-19 18:26:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:29,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:29,770 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 18:26:29,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:29,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315193727] [2022-07-19 18:26:29,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315193727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:29,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:29,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114345680] [2022-07-19 18:26:29,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:29,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:29,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:29,773 INFO L87 Difference]: Start difference. First operand 1112 states and 1716 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:30,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:30,003 INFO L93 Difference]: Finished difference Result 2253 states and 3504 transitions. [2022-07-19 18:26:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:30,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:26:30,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:30,010 INFO L225 Difference]: With dead ends: 2253 [2022-07-19 18:26:30,010 INFO L226 Difference]: Without dead ends: 2032 [2022-07-19 18:26:30,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:26:30,013 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1080 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:30,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1702 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2022-07-19 18:26:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1347. [2022-07-19 18:26:30,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1346 states have (on average 1.549034175334324) internal successors, (2085), 1346 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states 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 18:26:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2085 transitions. [2022-07-19 18:26:30,122 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2085 transitions. Word has length 77 [2022-07-19 18:26:30,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:30,122 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2085 transitions. [2022-07-19 18:26:30,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:30,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2085 transitions. [2022-07-19 18:26:30,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 18:26:30,123 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:30,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:30,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 18:26:30,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:30,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1646651862, now seen corresponding path program 1 times [2022-07-19 18:26:30,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:30,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639941503] [2022-07-19 18:26:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:30,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:30,186 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 18:26:30,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:30,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639941503] [2022-07-19 18:26:30,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639941503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:30,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:30,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 18:26:30,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031361578] [2022-07-19 18:26:30,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:30,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:26:30,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:26:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:30,189 INFO L87 Difference]: Start difference. First operand 1347 states and 2085 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:30,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:30,438 INFO L93 Difference]: Finished difference Result 2488 states and 3873 transitions. [2022-07-19 18:26:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 18:26:30,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 18:26:30,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:30,445 INFO L225 Difference]: With dead ends: 2488 [2022-07-19 18:26:30,445 INFO L226 Difference]: Without dead ends: 2267 [2022-07-19 18:26:30,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 18:26:30,446 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1087 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:30,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1265 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-07-19 18:26:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1582. [2022-07-19 18:26:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5521821631878558) internal successors, (2454), 1581 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states 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 18:26:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2454 transitions. [2022-07-19 18:26:30,585 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2454 transitions. Word has length 77 [2022-07-19 18:26:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:30,585 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2454 transitions. [2022-07-19 18:26:30,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2454 transitions. [2022-07-19 18:26:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 18:26:30,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:30,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:30,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 18:26:30,586 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1055850175, now seen corresponding path program 1 times [2022-07-19 18:26:30,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:30,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35527194] [2022-07-19 18:26:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:30,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:30,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35527194] [2022-07-19 18:26:30,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35527194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:30,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:30,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:26:30,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756996022] [2022-07-19 18:26:30,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:30,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:30,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:30,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:30,640 INFO L87 Difference]: Start difference. First operand 1582 states and 2454 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:31,045 INFO L93 Difference]: Finished difference Result 4619 states and 7211 transitions. [2022-07-19 18:26:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:26:31,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-19 18:26:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:31,053 INFO L225 Difference]: With dead ends: 4619 [2022-07-19 18:26:31,054 INFO L226 Difference]: Without dead ends: 3074 [2022-07-19 18:26:31,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:31,059 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 805 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:31,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 180 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:31,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-07-19 18:26:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3072. [2022-07-19 18:26:31,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.552263106479974) internal successors, (4767), 3071 states have internal predecessors, (4767), 0 states have call successors, (0), 0 states 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 18:26:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4767 transitions. [2022-07-19 18:26:31,334 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4767 transitions. Word has length 78 [2022-07-19 18:26:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:31,334 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4767 transitions. [2022-07-19 18:26:31,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4767 transitions. [2022-07-19 18:26:31,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 18:26:31,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:31,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:31,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 18:26:31,336 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2025338944, now seen corresponding path program 1 times [2022-07-19 18:26:31,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:31,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326650084] [2022-07-19 18:26:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:31,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:31,400 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 18:26:31,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:31,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326650084] [2022-07-19 18:26:31,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326650084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:31,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:31,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:26:31,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868030985] [2022-07-19 18:26:31,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:31,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:31,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:31,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:31,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:31,402 INFO L87 Difference]: Start difference. First operand 3072 states and 4767 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:31,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:31,787 INFO L93 Difference]: Finished difference Result 6091 states and 9477 transitions. [2022-07-19 18:26:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:26:31,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-19 18:26:31,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:31,796 INFO L225 Difference]: With dead ends: 6091 [2022-07-19 18:26:31,797 INFO L226 Difference]: Without dead ends: 3072 [2022-07-19 18:26:31,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:31,801 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 503 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:31,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 143 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:31,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-07-19 18:26:32,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2022-07-19 18:26:32,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.5350048844024748) internal successors, (4714), 3071 states have internal predecessors, (4714), 0 states have call successors, (0), 0 states 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 18:26:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4714 transitions. [2022-07-19 18:26:32,133 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4714 transitions. Word has length 79 [2022-07-19 18:26:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:32,133 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4714 transitions. [2022-07-19 18:26:32,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4714 transitions. [2022-07-19 18:26:32,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 18:26:32,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:32,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:32,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 18:26:32,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:32,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:32,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1784244513, now seen corresponding path program 1 times [2022-07-19 18:26:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:32,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208809642] [2022-07-19 18:26:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:32,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:32,171 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 18:26:32,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:32,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208809642] [2022-07-19 18:26:32,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208809642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:32,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:32,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:26:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383238729] [2022-07-19 18:26:32,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:32,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:32,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:32,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:32,173 INFO L87 Difference]: Start difference. First operand 3072 states and 4714 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:32,512 INFO L93 Difference]: Finished difference Result 6095 states and 9376 transitions. [2022-07-19 18:26:32,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:26:32,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-07-19 18:26:32,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:32,520 INFO L225 Difference]: With dead ends: 6095 [2022-07-19 18:26:32,521 INFO L226 Difference]: Without dead ends: 3072 [2022-07-19 18:26:32,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:32,523 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 508 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:32,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 135 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-07-19 18:26:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2022-07-19 18:26:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.5177466623249756) internal successors, (4661), 3071 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states 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 18:26:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4661 transitions. [2022-07-19 18:26:32,798 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4661 transitions. Word has length 80 [2022-07-19 18:26:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:32,799 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4661 transitions. [2022-07-19 18:26:32,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4661 transitions. [2022-07-19 18:26:32,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-19 18:26:32,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:32,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:26:32,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 18:26:32,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash -511041836, now seen corresponding path program 1 times [2022-07-19 18:26:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:32,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570834627] [2022-07-19 18:26:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:32,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:32,835 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 18:26:32,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:32,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570834627] [2022-07-19 18:26:32,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570834627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:32,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:32,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:26:32,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225689554] [2022-07-19 18:26:32,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:32,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:32,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:32,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:32,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:32,837 INFO L87 Difference]: Start difference. First operand 3072 states and 4661 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:33,215 INFO L93 Difference]: Finished difference Result 6103 states and 9280 transitions. [2022-07-19 18:26:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:26:33,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-19 18:26:33,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:33,226 INFO L225 Difference]: With dead ends: 6103 [2022-07-19 18:26:33,226 INFO L226 Difference]: Without dead ends: 3072 [2022-07-19 18:26:33,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:33,229 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 524 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:33,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 119 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-07-19 18:26:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2022-07-19 18:26:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.5004884402474763) internal successors, (4608), 3071 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states 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 18:26:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4608 transitions. [2022-07-19 18:26:33,591 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4608 transitions. Word has length 81 [2022-07-19 18:26:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:33,592 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4608 transitions. [2022-07-19 18:26:33,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 18:26:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4608 transitions. [2022-07-19 18:26:33,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-19 18:26:33,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:33,593 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] [2022-07-19 18:26:33,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 18:26:33,594 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:33,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:33,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1919227007, now seen corresponding path program 1 times [2022-07-19 18:26:33,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:33,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312725610] [2022-07-19 18:26:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:33,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:26:33,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:33,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312725610] [2022-07-19 18:26:33,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312725610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:33,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:33,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:26:33,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989818920] [2022-07-19 18:26:33,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:33,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:33,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:33,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:33,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:33,639 INFO L87 Difference]: Start difference. First operand 3072 states and 4608 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 18:26:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:33,980 INFO L93 Difference]: Finished difference Result 6099 states and 9170 transitions. [2022-07-19 18:26:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:26:33,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-07-19 18:26:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:34,000 INFO L225 Difference]: With dead ends: 6099 [2022-07-19 18:26:34,001 INFO L226 Difference]: Without dead ends: 3072 [2022-07-19 18:26:34,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:26:34,005 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 506 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:34,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 127 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:26:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-07-19 18:26:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2022-07-19 18:26:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3072 states, 3071 states have (on average 1.4832302181699772) internal successors, (4555), 3071 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states 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 18:26:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 4555 transitions. [2022-07-19 18:26:34,298 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 4555 transitions. Word has length 82 [2022-07-19 18:26:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:34,298 INFO L495 AbstractCegarLoop]: Abstraction has 3072 states and 4555 transitions. [2022-07-19 18:26:34,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 18:26:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 4555 transitions. [2022-07-19 18:26:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 18:26:34,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:34,300 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] [2022-07-19 18:26:34,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 18:26:34,300 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1274660632, now seen corresponding path program 1 times [2022-07-19 18:26:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:34,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618004847] [2022-07-19 18:26:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:34,367 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 18:26:34,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:34,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618004847] [2022-07-19 18:26:34,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618004847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:34,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:34,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 18:26:34,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626250277] [2022-07-19 18:26:34,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:34,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 18:26:34,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 18:26:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:26:34,369 INFO L87 Difference]: Start difference. First operand 3072 states and 4555 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 18:26:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:34,846 INFO L93 Difference]: Finished difference Result 5104 states and 7560 transitions. [2022-07-19 18:26:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 18:26:34,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-07-19 18:26:34,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:34,854 INFO L225 Difference]: With dead ends: 5104 [2022-07-19 18:26:34,854 INFO L226 Difference]: Without dead ends: 5102 [2022-07-19 18:26:34,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 18:26:34,855 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 170 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:34,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 777 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:26:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2022-07-19 18:26:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 3096. [2022-07-19 18:26:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4749596122778674) internal successors, (4565), 3095 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states 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 18:26:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4565 transitions. [2022-07-19 18:26:35,165 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4565 transitions. Word has length 83 [2022-07-19 18:26:35,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:35,165 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4565 transitions. [2022-07-19 18:26:35,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 18:26:35,165 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4565 transitions. [2022-07-19 18:26:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 18:26:35,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:35,166 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] [2022-07-19 18:26:35,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 18:26:35,167 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:35,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1071199524, now seen corresponding path program 1 times [2022-07-19 18:26:35,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:35,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008582682] [2022-07-19 18:26:35,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:35,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:35,288 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 18:26:35,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:35,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008582682] [2022-07-19 18:26:35,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008582682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:35,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:35,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 18:26:35,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320217187] [2022-07-19 18:26:35,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:35,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 18:26:35,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:35,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 18:26:35,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 18:26:35,290 INFO L87 Difference]: Start difference. First operand 3096 states and 4565 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 18:26:36,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:36,458 INFO L93 Difference]: Finished difference Result 8921 states and 13184 transitions. [2022-07-19 18:26:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 18:26:36,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-07-19 18:26:36,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:36,468 INFO L225 Difference]: With dead ends: 8921 [2022-07-19 18:26:36,468 INFO L226 Difference]: Without dead ends: 5981 [2022-07-19 18:26:36,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-07-19 18:26:36,474 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1239 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:36,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 433 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:26:36,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2022-07-19 18:26:36,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 3096. [2022-07-19 18:26:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4746365105008077) internal successors, (4564), 3095 states have internal predecessors, (4564), 0 states have call successors, (0), 0 states 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 18:26:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4564 transitions. [2022-07-19 18:26:36,869 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4564 transitions. Word has length 83 [2022-07-19 18:26:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:36,869 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4564 transitions. [2022-07-19 18:26:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 18:26:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4564 transitions. [2022-07-19 18:26:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 18:26:36,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:36,871 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] [2022-07-19 18:26:36,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 18:26:36,871 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:36,872 INFO L85 PathProgramCache]: Analyzing trace with hash -49884989, now seen corresponding path program 1 times [2022-07-19 18:26:36,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:36,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712228556] [2022-07-19 18:26:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:36,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:36,966 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 18:26:36,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:36,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712228556] [2022-07-19 18:26:36,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712228556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:36,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:36,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 18:26:36,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739452809] [2022-07-19 18:26:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:36,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:26:36,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:36,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:26:36,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:26:36,968 INFO L87 Difference]: Start difference. First operand 3096 states and 4564 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 18:26:37,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:37,866 INFO L93 Difference]: Finished difference Result 6612 states and 9728 transitions. [2022-07-19 18:26:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 18:26:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-07-19 18:26:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:37,872 INFO L225 Difference]: With dead ends: 6612 [2022-07-19 18:26:37,872 INFO L226 Difference]: Without dead ends: 3637 [2022-07-19 18:26:37,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:26:37,876 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1179 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:37,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 435 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:26:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3637 states. [2022-07-19 18:26:38,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3637 to 3096. [2022-07-19 18:26:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4736672051696285) internal successors, (4561), 3095 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states 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 18:26:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4561 transitions. [2022-07-19 18:26:38,273 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4561 transitions. Word has length 84 [2022-07-19 18:26:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:38,274 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4561 transitions. [2022-07-19 18:26:38,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 18:26:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4561 transitions. [2022-07-19 18:26:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 18:26:38,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:38,275 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] [2022-07-19 18:26:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 18:26:38,276 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1500586117, now seen corresponding path program 1 times [2022-07-19 18:26:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:38,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716282316] [2022-07-19 18:26:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:38,393 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 18:26:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:38,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716282316] [2022-07-19 18:26:38,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716282316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:38,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:38,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 18:26:38,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020371945] [2022-07-19 18:26:38,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:38,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:26:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:26:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:26:38,395 INFO L87 Difference]: Start difference. First operand 3096 states and 4561 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 18:26:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:39,852 INFO L93 Difference]: Finished difference Result 9135 states and 13457 transitions. [2022-07-19 18:26:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 18:26:39,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-07-19 18:26:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:39,863 INFO L225 Difference]: With dead ends: 9135 [2022-07-19 18:26:39,863 INFO L226 Difference]: Without dead ends: 6175 [2022-07-19 18:26:39,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:26:39,867 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1267 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:39,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 548 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:26:39,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2022-07-19 18:26:40,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 3096. [2022-07-19 18:26:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4717285945072698) internal successors, (4555), 3095 states have internal predecessors, (4555), 0 states have call successors, (0), 0 states 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 18:26:40,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4555 transitions. [2022-07-19 18:26:40,356 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4555 transitions. Word has length 84 [2022-07-19 18:26:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:40,356 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4555 transitions. [2022-07-19 18:26:40,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 18:26:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4555 transitions. [2022-07-19 18:26:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-19 18:26:40,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:40,357 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] [2022-07-19 18:26:40,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 18:26:40,358 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash 842057330, now seen corresponding path program 1 times [2022-07-19 18:26:40,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121961218] [2022-07-19 18:26:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:40,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:40,464 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 18:26:40,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:40,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121961218] [2022-07-19 18:26:40,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121961218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:40,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:40,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 18:26:40,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832685069] [2022-07-19 18:26:40,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:40,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:26:40,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:40,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:26:40,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:26:40,466 INFO L87 Difference]: Start difference. First operand 3096 states and 4555 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:26:41,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:41,946 INFO L93 Difference]: Finished difference Result 9090 states and 13379 transitions. [2022-07-19 18:26:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 18:26:41,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-07-19 18:26:41,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:41,955 INFO L225 Difference]: With dead ends: 9090 [2022-07-19 18:26:41,955 INFO L226 Difference]: Without dead ends: 6160 [2022-07-19 18:26:41,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:26:41,959 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1401 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:41,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 423 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:26:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2022-07-19 18:26:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 3096. [2022-07-19 18:26:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 3095 states have (on average 1.4688206785137319) internal successors, (4546), 3095 states have internal predecessors, (4546), 0 states have call successors, (0), 0 states 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 18:26:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 4546 transitions. [2022-07-19 18:26:42,483 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 4546 transitions. Word has length 85 [2022-07-19 18:26:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:42,484 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 4546 transitions. [2022-07-19 18:26:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:26:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 4546 transitions. [2022-07-19 18:26:42,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 18:26:42,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:42,485 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] [2022-07-19 18:26:42,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 18:26:42,485 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:42,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:42,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2050544046, now seen corresponding path program 1 times [2022-07-19 18:26:42,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:42,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136216693] [2022-07-19 18:26:42,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:42,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:42,667 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 18:26:42,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:42,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136216693] [2022-07-19 18:26:42,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136216693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:42,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:42,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 18:26:42,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272851905] [2022-07-19 18:26:42,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:42,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 18:26:42,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:42,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 18:26:42,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 18:26:42,668 INFO L87 Difference]: Start difference. First operand 3096 states and 4546 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 18:26:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:26:55,323 INFO L93 Difference]: Finished difference Result 53738 states and 78321 transitions. [2022-07-19 18:26:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-19 18:26:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-07-19 18:26:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:26:55,395 INFO L225 Difference]: With dead ends: 53738 [2022-07-19 18:26:55,395 INFO L226 Difference]: Without dead ends: 50853 [2022-07-19 18:26:55,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2022-07-19 18:26:55,410 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 5561 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5561 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 18:26:55,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5561 Valid, 1159 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 18:26:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50853 states. [2022-07-19 18:26:56,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50853 to 3123. [2022-07-19 18:26:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.4641255605381165) internal successors, (4571), 3122 states have internal predecessors, (4571), 0 states have call successors, (0), 0 states 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 18:26:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 4571 transitions. [2022-07-19 18:26:56,440 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 4571 transitions. Word has length 86 [2022-07-19 18:26:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:26:56,440 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 4571 transitions. [2022-07-19 18:26:56,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 18:26:56,440 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 4571 transitions. [2022-07-19 18:26:56,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 18:26:56,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:26:56,441 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] [2022-07-19 18:26:56,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 18:26:56,442 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:26:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:26:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash 420822697, now seen corresponding path program 1 times [2022-07-19 18:26:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:26:56,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298989669] [2022-07-19 18:26:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:26:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:26:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:26:56,709 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 18:26:56,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:26:56,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298989669] [2022-07-19 18:26:56,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298989669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:26:56,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:26:56,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 18:26:56,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171337022] [2022-07-19 18:26:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:26:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 18:26:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:26:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 18:26:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 18:26:56,711 INFO L87 Difference]: Start difference. First operand 3123 states and 4571 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:27:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:27:01,263 INFO L93 Difference]: Finished difference Result 12896 states and 18999 transitions. [2022-07-19 18:27:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 18:27:01,263 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-07-19 18:27:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:27:01,276 INFO L225 Difference]: With dead ends: 12896 [2022-07-19 18:27:01,276 INFO L226 Difference]: Without dead ends: 11954 [2022-07-19 18:27:01,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-19 18:27:01,279 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 1488 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:27:01,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2018 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:27:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11954 states. [2022-07-19 18:27:02,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11954 to 3087. [2022-07-19 18:27:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 3086 states have (on average 1.4633830200907323) internal successors, (4516), 3086 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states 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 18:27:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4516 transitions. [2022-07-19 18:27:02,315 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4516 transitions. Word has length 87 [2022-07-19 18:27:02,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:27:02,315 INFO L495 AbstractCegarLoop]: Abstraction has 3087 states and 4516 transitions. [2022-07-19 18:27:02,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:27:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4516 transitions. [2022-07-19 18:27:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 18:27:02,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:27:02,316 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] [2022-07-19 18:27:02,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 18:27:02,317 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:27:02,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:27:02,317 INFO L85 PathProgramCache]: Analyzing trace with hash -891179609, now seen corresponding path program 1 times [2022-07-19 18:27:02,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:27:02,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854487392] [2022-07-19 18:27:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:02,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:27:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:02,824 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 18:27:02,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:27:02,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854487392] [2022-07-19 18:27:02,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854487392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:27:02,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:27:02,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 18:27:02,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58191001] [2022-07-19 18:27:02,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:27:02,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 18:27:02,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:27:02,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 18:27:02,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-19 18:27:02,826 INFO L87 Difference]: Start difference. First operand 3087 states and 4516 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:27:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:27:07,643 INFO L93 Difference]: Finished difference Result 9426 states and 13874 transitions. [2022-07-19 18:27:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 18:27:07,643 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-07-19 18:27:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:27:07,651 INFO L225 Difference]: With dead ends: 9426 [2022-07-19 18:27:07,651 INFO L226 Difference]: Without dead ends: 8492 [2022-07-19 18:27:07,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2022-07-19 18:27:07,653 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1969 mSDsluCounter, 4287 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:27:07,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 4683 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 18:27:07,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2022-07-19 18:27:08,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 3087. [2022-07-19 18:27:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 3086 states have (on average 1.4624108878807518) internal successors, (4513), 3086 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states 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 18:27:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4513 transitions. [2022-07-19 18:27:08,830 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4513 transitions. Word has length 87 [2022-07-19 18:27:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:27:08,831 INFO L495 AbstractCegarLoop]: Abstraction has 3087 states and 4513 transitions. [2022-07-19 18:27:08,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:27:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4513 transitions. [2022-07-19 18:27:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 18:27:08,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:27:08,832 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] [2022-07-19 18:27:08,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 18:27:08,832 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:27:08,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:27:08,832 INFO L85 PathProgramCache]: Analyzing trace with hash -359518871, now seen corresponding path program 1 times [2022-07-19 18:27:08,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:27:08,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105570591] [2022-07-19 18:27:08,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:08,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:27:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:09,932 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 18:27:09,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:27:09,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105570591] [2022-07-19 18:27:09,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105570591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:27:09,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:27:09,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-07-19 18:27:09,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386658035] [2022-07-19 18:27:09,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:27:09,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-19 18:27:09,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:27:09,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-19 18:27:09,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 18:27:09,934 INFO L87 Difference]: Start difference. First operand 3087 states and 4513 transitions. Second operand has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:27:20,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:27:20,601 INFO L93 Difference]: Finished difference Result 13407 states and 19763 transitions. [2022-07-19 18:27:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-19 18:27:20,602 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-07-19 18:27:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:27:20,616 INFO L225 Difference]: With dead ends: 13407 [2022-07-19 18:27:20,616 INFO L226 Difference]: Without dead ends: 12962 [2022-07-19 18:27:20,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 717 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=651, Invalid=3771, Unknown=0, NotChecked=0, Total=4422 [2022-07-19 18:27:20,620 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 2455 mSDsluCounter, 10798 mSDsCounter, 0 mSdLazyCounter, 6484 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2455 SdHoareTripleChecker+Valid, 11341 SdHoareTripleChecker+Invalid, 6588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 6484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 18:27:20,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2455 Valid, 11341 Invalid, 6588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 6484 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 18:27:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2022-07-19 18:27:21,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 3101. [2022-07-19 18:27:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3100 states have (on average 1.4616129032258065) internal successors, (4531), 3100 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states 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 18:27:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 4531 transitions. [2022-07-19 18:27:21,967 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 4531 transitions. Word has length 87 [2022-07-19 18:27:21,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:27:21,967 INFO L495 AbstractCegarLoop]: Abstraction has 3101 states and 4531 transitions. [2022-07-19 18:27:21,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:27:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 4531 transitions. [2022-07-19 18:27:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 18:27:21,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:27:21,968 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] [2022-07-19 18:27:21,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 18:27:21,968 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:27:21,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:27:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash 633451142, now seen corresponding path program 1 times [2022-07-19 18:27:21,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:27:21,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911189650] [2022-07-19 18:27:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:21,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:27:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:22,225 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 18:27:22,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:27:22,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911189650] [2022-07-19 18:27:22,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911189650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:27:22,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:27:22,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 18:27:22,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482713339] [2022-07-19 18:27:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:27:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 18:27:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:27:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 18:27:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-19 18:27:22,226 INFO L87 Difference]: Start difference. First operand 3101 states and 4531 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:27:28,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:27:28,635 INFO L93 Difference]: Finished difference Result 12623 states and 18619 transitions. [2022-07-19 18:27:28,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 18:27:28,635 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-07-19 18:27:28,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:27:28,648 INFO L225 Difference]: With dead ends: 12623 [2022-07-19 18:27:28,648 INFO L226 Difference]: Without dead ends: 11694 [2022-07-19 18:27:28,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2022-07-19 18:27:28,652 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 1331 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:27:28,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1386 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:27:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11694 states. [2022-07-19 18:27:30,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11694 to 3064. [2022-07-19 18:27:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3063 states have (on average 1.4632713026444661) internal successors, (4482), 3063 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states 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 18:27:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4482 transitions. [2022-07-19 18:27:30,220 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4482 transitions. Word has length 87 [2022-07-19 18:27:30,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:27:30,220 INFO L495 AbstractCegarLoop]: Abstraction has 3064 states and 4482 transitions. [2022-07-19 18:27:30,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 18:27:30,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4482 transitions. [2022-07-19 18:27:30,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 18:27:30,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:27:30,221 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] [2022-07-19 18:27:30,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 18:27:30,221 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:27:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:27:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash 377130840, now seen corresponding path program 1 times [2022-07-19 18:27:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:27:30,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759511322] [2022-07-19 18:27:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:30,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:27:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:30,524 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 18:27:30,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:27:30,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759511322] [2022-07-19 18:27:30,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759511322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:27:30,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:27:30,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 18:27:30,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058670886] [2022-07-19 18:27:30,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:27:30,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 18:27:30,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:27:30,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 18:27:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-19 18:27:30,526 INFO L87 Difference]: Start difference. First operand 3064 states and 4482 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:27:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:27:44,495 INFO L93 Difference]: Finished difference Result 24098 states and 35604 transitions. [2022-07-19 18:27:44,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 18:27:44,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-07-19 18:27:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:27:44,520 INFO L225 Difference]: With dead ends: 24098 [2022-07-19 18:27:44,520 INFO L226 Difference]: Without dead ends: 23208 [2022-07-19 18:27:44,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-19 18:27:44,525 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1971 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:27:44,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 2451 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:27:44,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23208 states. [2022-07-19 18:27:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23208 to 3048. [2022-07-19 18:27:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3047 states have (on average 1.4617656711519527) internal successors, (4454), 3047 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states 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 18:27:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4454 transitions. [2022-07-19 18:27:46,387 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4454 transitions. Word has length 88 [2022-07-19 18:27:46,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:27:46,387 INFO L495 AbstractCegarLoop]: Abstraction has 3048 states and 4454 transitions. [2022-07-19 18:27:46,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:27:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4454 transitions. [2022-07-19 18:27:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 18:27:46,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:27:46,388 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] [2022-07-19 18:27:46,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 18:27:46,388 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:27:46,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:27:46,388 INFO L85 PathProgramCache]: Analyzing trace with hash -2099303399, now seen corresponding path program 1 times [2022-07-19 18:27:46,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:27:46,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361122954] [2022-07-19 18:27:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:46,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:27:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:46,650 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 18:27:46,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:27:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361122954] [2022-07-19 18:27:46,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361122954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:27:46,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:27:46,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 18:27:46,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165458417] [2022-07-19 18:27:46,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:27:46,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 18:27:46,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:27:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 18:27:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-19 18:27:46,654 INFO L87 Difference]: Start difference. First operand 3048 states and 4454 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:27:51,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:27:51,010 INFO L93 Difference]: Finished difference Result 6858 states and 10082 transitions. [2022-07-19 18:27:51,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 18:27:51,011 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-07-19 18:27:51,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:27:51,016 INFO L225 Difference]: With dead ends: 6858 [2022-07-19 18:27:51,016 INFO L226 Difference]: Without dead ends: 5922 [2022-07-19 18:27:51,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-07-19 18:27:51,019 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 779 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:27:51,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1597 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:27:51,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5922 states. [2022-07-19 18:27:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5922 to 2998. [2022-07-19 18:27:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2997 states have (on average 1.4654654654654655) internal successors, (4392), 2997 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states 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 18:27:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 4392 transitions. [2022-07-19 18:27:52,892 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 4392 transitions. Word has length 88 [2022-07-19 18:27:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:27:52,893 INFO L495 AbstractCegarLoop]: Abstraction has 2998 states and 4392 transitions. [2022-07-19 18:27:52,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:27:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 4392 transitions. [2022-07-19 18:27:52,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 18:27:52,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:27:52,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:27:52,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 18:27:52,894 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:27:52,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:27:52,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1915986027, now seen corresponding path program 1 times [2022-07-19 18:27:52,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:27:52,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467391385] [2022-07-19 18:27:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:52,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:27:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:52,943 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 18:27:52,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:27:52,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467391385] [2022-07-19 18:27:52,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467391385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:27:52,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:27:52,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:27:52,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728004203] [2022-07-19 18:27:52,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:27:52,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:27:52,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:27:52,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:27:52,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:27:52,945 INFO L87 Difference]: Start difference. First operand 2998 states and 4392 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:27:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:27:55,565 INFO L93 Difference]: Finished difference Result 7052 states and 10397 transitions. [2022-07-19 18:27:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:27:55,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-07-19 18:27:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:27:55,569 INFO L225 Difference]: With dead ends: 7052 [2022-07-19 18:27:55,569 INFO L226 Difference]: Without dead ends: 4178 [2022-07-19 18:27:55,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 18:27:55,571 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 90 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:27:55,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 436 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:27:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4178 states. [2022-07-19 18:27:58,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4178 to 4154. [2022-07-19 18:27:58,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 4153 states have (on average 1.4603900794606308) internal successors, (6065), 4153 states have internal predecessors, (6065), 0 states have call successors, (0), 0 states 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 18:27:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 6065 transitions. [2022-07-19 18:27:58,148 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 6065 transitions. Word has length 88 [2022-07-19 18:27:58,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:27:58,149 INFO L495 AbstractCegarLoop]: Abstraction has 4154 states and 6065 transitions. [2022-07-19 18:27:58,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:27:58,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 6065 transitions. [2022-07-19 18:27:58,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 18:27:58,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:27:58,149 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] [2022-07-19 18:27:58,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 18:27:58,150 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:27:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:27:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1312135, now seen corresponding path program 1 times [2022-07-19 18:27:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:27:58,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878088646] [2022-07-19 18:27:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:27:58,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:27:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:27:59,052 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 18:27:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:27:59,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878088646] [2022-07-19 18:27:59,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878088646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:27:59,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:27:59,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-07-19 18:27:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606923944] [2022-07-19 18:27:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:27:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-19 18:27:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:27:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-19 18:27:59,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2022-07-19 18:27:59,054 INFO L87 Difference]: Start difference. First operand 4154 states and 6065 transitions. Second operand has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:28:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:28:08,585 INFO L93 Difference]: Finished difference Result 10438 states and 15300 transitions. [2022-07-19 18:28:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 18:28:08,585 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-07-19 18:28:08,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:28:08,594 INFO L225 Difference]: With dead ends: 10438 [2022-07-19 18:28:08,594 INFO L226 Difference]: Without dead ends: 9341 [2022-07-19 18:28:08,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=575, Invalid=3085, Unknown=0, NotChecked=0, Total=3660 [2022-07-19 18:28:08,596 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 813 mSDsluCounter, 4854 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 5145 SdHoareTripleChecker+Invalid, 3401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 18:28:08,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 5145 Invalid, 3401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3341 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 18:28:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2022-07-19 18:28:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 4167. [2022-07-19 18:28:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4167 states, 4166 states have (on average 1.4596735477676428) internal successors, (6081), 4166 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states 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 18:28:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4167 states to 4167 states and 6081 transitions. [2022-07-19 18:28:11,237 INFO L78 Accepts]: Start accepts. Automaton has 4167 states and 6081 transitions. Word has length 88 [2022-07-19 18:28:11,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:28:11,237 INFO L495 AbstractCegarLoop]: Abstraction has 4167 states and 6081 transitions. [2022-07-19 18:28:11,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 18:28:11,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4167 states and 6081 transitions. [2022-07-19 18:28:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-19 18:28:11,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:28:11,238 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] [2022-07-19 18:28:11,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 18:28:11,238 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:28:11,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:28:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash 316975013, now seen corresponding path program 1 times [2022-07-19 18:28:11,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:28:11,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500355927] [2022-07-19 18:28:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:28:11,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:28:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:28:11,536 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 18:28:11,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:28:11,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500355927] [2022-07-19 18:28:11,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500355927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:28:11,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:28:11,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 18:28:11,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158503904] [2022-07-19 18:28:11,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:28:11,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 18:28:11,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:28:11,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 18:28:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-19 18:28:11,537 INFO L87 Difference]: Start difference. First operand 4167 states and 6081 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 18:28:29,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:28:29,268 INFO L93 Difference]: Finished difference Result 25663 states and 37686 transitions. [2022-07-19 18:28:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 18:28:29,269 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-07-19 18:28:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:28:29,294 INFO L225 Difference]: With dead ends: 25663 [2022-07-19 18:28:29,294 INFO L226 Difference]: Without dead ends: 24341 [2022-07-19 18:28:29,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-19 18:28:29,299 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1400 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 18:28:29,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 2776 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 18:28:29,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24341 states. [2022-07-19 18:28:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24341 to 4142. [2022-07-19 18:28:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4142 states, 4141 states have (on average 1.460758270949046) internal successors, (6049), 4141 states have internal predecessors, (6049), 0 states have call successors, (0), 0 states 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 18:28:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 6049 transitions. [2022-07-19 18:28:32,372 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 6049 transitions. Word has length 89 [2022-07-19 18:28:32,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:28:32,372 INFO L495 AbstractCegarLoop]: Abstraction has 4142 states and 6049 transitions. [2022-07-19 18:28:32,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 states 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 18:28:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 6049 transitions. [2022-07-19 18:28:32,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 18:28:32,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:28:32,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:28:32,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 18:28:32,374 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:28:32,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:28:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1743887154, now seen corresponding path program 1 times [2022-07-19 18:28:32,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:28:32,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748330673] [2022-07-19 18:28:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:28:32,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:28:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:28:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:28:32,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:28:32,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748330673] [2022-07-19 18:28:32,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748330673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:28:32,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:28:32,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 18:28:32,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146910725] [2022-07-19 18:28:32,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:28:32,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 18:28:32,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:28:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 18:28:32,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 18:28:32,428 INFO L87 Difference]: Start difference. First operand 4142 states and 6049 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:28:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:28:36,647 INFO L93 Difference]: Finished difference Result 8642 states and 12686 transitions. [2022-07-19 18:28:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:28:36,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-07-19 18:28:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:28:36,654 INFO L225 Difference]: With dead ends: 8642 [2022-07-19 18:28:36,654 INFO L226 Difference]: Without dead ends: 5766 [2022-07-19 18:28:36,656 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 18:28:36,656 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 83 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:28:36,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 395 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:28:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2022-07-19 18:28:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5548. [2022-07-19 18:28:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5548 states, 5547 states have (on average 1.4564629529475392) internal successors, (8079), 5547 states have internal predecessors, (8079), 0 states have call successors, (0), 0 states 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 18:28:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 8079 transitions. [2022-07-19 18:28:40,815 INFO L78 Accepts]: Start accepts. Automaton has 5548 states and 8079 transitions. Word has length 116 [2022-07-19 18:28:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:28:40,815 INFO L495 AbstractCegarLoop]: Abstraction has 5548 states and 8079 transitions. [2022-07-19 18:28:40,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:28:40,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5548 states and 8079 transitions. [2022-07-19 18:28:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 18:28:40,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:28:40,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:28:40,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 18:28:40,816 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:28:40,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:28:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1636203635, now seen corresponding path program 1 times [2022-07-19 18:28:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:28:40,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224526409] [2022-07-19 18:28:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:28:40,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:28:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:28:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:28:40,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:28:40,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224526409] [2022-07-19 18:28:40,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224526409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:28:40,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:28:40,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:28:40,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247900497] [2022-07-19 18:28:40,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:28:40,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:28:40,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:28:40,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:28:40,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:28:40,865 INFO L87 Difference]: Start difference. First operand 5548 states and 8079 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:28:59,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:28:59,732 INFO L93 Difference]: Finished difference Result 29828 states and 43439 transitions. [2022-07-19 18:28:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:28:59,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-07-19 18:28:59,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:28:59,761 INFO L225 Difference]: With dead ends: 29828 [2022-07-19 18:28:59,761 INFO L226 Difference]: Without dead ends: 24408 [2022-07-19 18:28:59,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-19 18:28:59,770 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1506 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:28:59,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 362 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:28:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24408 states. [2022-07-19 18:29:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24408 to 11966. [2022-07-19 18:29:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11966 states, 11965 states have (on average 1.4557459256163812) internal successors, (17418), 11965 states have internal predecessors, (17418), 0 states have call successors, (0), 0 states 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 18:29:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11966 states to 11966 states and 17418 transitions. [2022-07-19 18:29:08,353 INFO L78 Accepts]: Start accepts. Automaton has 11966 states and 17418 transitions. Word has length 116 [2022-07-19 18:29:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:29:08,353 INFO L495 AbstractCegarLoop]: Abstraction has 11966 states and 17418 transitions. [2022-07-19 18:29:08,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:29:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 11966 states and 17418 transitions. [2022-07-19 18:29:08,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 18:29:08,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:29:08,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:29:08,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 18:29:08,355 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:29:08,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:29:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2144971769, now seen corresponding path program 1 times [2022-07-19 18:29:08,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:29:08,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932418162] [2022-07-19 18:29:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:29:08,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:29:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:29:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:29:08,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:29:08,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932418162] [2022-07-19 18:29:08,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932418162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:29:08,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:29:08,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:29:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924440834] [2022-07-19 18:29:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:29:08,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:29:08,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:29:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:29:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:29:08,407 INFO L87 Difference]: Start difference. First operand 11966 states and 17418 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:29:45,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:29:45,493 INFO L93 Difference]: Finished difference Result 60518 states and 87734 transitions. [2022-07-19 18:29:45,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 18:29:45,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-07-19 18:29:45,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:29:45,562 INFO L225 Difference]: With dead ends: 60518 [2022-07-19 18:29:45,562 INFO L226 Difference]: Without dead ends: 48680 [2022-07-19 18:29:45,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-19 18:29:45,581 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1339 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 18:29:45,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 366 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 18:29:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48680 states. [2022-07-19 18:30:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48680 to 25802. [2022-07-19 18:30:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25802 states, 25801 states have (on average 1.4532770047672572) internal successors, (37496), 25801 states have internal predecessors, (37496), 0 states have call successors, (0), 0 states 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 18:30:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25802 states to 25802 states and 37496 transitions. [2022-07-19 18:30:04,078 INFO L78 Accepts]: Start accepts. Automaton has 25802 states and 37496 transitions. Word has length 116 [2022-07-19 18:30:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:30:04,078 INFO L495 AbstractCegarLoop]: Abstraction has 25802 states and 37496 transitions. [2022-07-19 18:30:04,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 18:30:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 25802 states and 37496 transitions. [2022-07-19 18:30:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 18:30:04,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:30:04,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:30:04,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 18:30:04,081 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:30:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:30:04,081 INFO L85 PathProgramCache]: Analyzing trace with hash 531272813, now seen corresponding path program 1 times [2022-07-19 18:30:04,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:30:04,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037867822] [2022-07-19 18:30:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:30:04,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:30:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:30:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 18:30:04,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:30:04,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037867822] [2022-07-19 18:30:04,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037867822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:30:04,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:30:04,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 18:30:04,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513543357] [2022-07-19 18:30:04,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:30:04,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 18:30:04,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:30:04,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 18:30:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 18:30:04,140 INFO L87 Difference]: Start difference. First operand 25802 states and 37496 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)