./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.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 0275b6de2ba0a66ec9aee8de32ff466d54e24272e5f9096b55f3975f63dd9962 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:59:46,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:59:46,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:59:46,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:59:46,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:59:46,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:59:46,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:59:46,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:59:46,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:59:46,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:59:46,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:59:46,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:59:46,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:59:46,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:59:46,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:59:46,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:59:46,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:59:46,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:59:46,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:59:46,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:59:46,408 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:59:46,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:59:46,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:59:46,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:59:46,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:59:46,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:59:46,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:59:46,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:59:46,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:59:46,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:59:46,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:59:46,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:59:46,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:59:46,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:59:46,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:59:46,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:59:46,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:59:46,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:59:46,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:59:46,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:59:46,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:59:46,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:59:46,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:59:46,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:59:46,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:59:46,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:59:46,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:59:46,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:59:46,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:59:46,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:59:46,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:59:46,461 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:59:46,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:59:46,462 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:59:46,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:59:46,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:59:46,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:59:46,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:59:46,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:59:46,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:59:46,463 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:59:46,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:59:46,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:59:46,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:59:46,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:59:46,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:59:46,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:59:46,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:59:46,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:59:46,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:59:46,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:59:46,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:59:46,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:59:46,465 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:59:46,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:59:46,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:59:46,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0275b6de2ba0a66ec9aee8de32ff466d54e24272e5f9096b55f3975f63dd9962 [2022-07-21 07:59:46,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:59:46,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:59:46,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:59:46,787 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:59:46,788 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:59:46,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c [2022-07-21 07:59:46,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84938062/a5ddb55cd56f4984be7601e493be9e5a/FLAGa8dc7a380 [2022-07-21 07:59:47,330 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:59:47,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c [2022-07-21 07:59:47,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84938062/a5ddb55cd56f4984be7601e493be9e5a/FLAGa8dc7a380 [2022-07-21 07:59:47,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84938062/a5ddb55cd56f4984be7601e493be9e5a [2022-07-21 07:59:47,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:59:47,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:59:47,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:59:47,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:59:47,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:59:47,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:59:47" (1/1) ... [2022-07-21 07:59:47,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16920132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:47, skipping insertion in model container [2022-07-21 07:59:47,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:59:47" (1/1) ... [2022-07-21 07:59:47,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:59:47,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:59:47,984 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[26860,26873] [2022-07-21 07:59:47,994 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[27702,27715] [2022-07-21 07:59:48,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:59:48,517 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:59:48,553 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[26860,26873] [2022-07-21 07:59:48,555 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[27702,27715] [2022-07-21 07:59:48,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:59:48,928 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:59:48,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48 WrapperNode [2022-07-21 07:59:48,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:59:48,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:59:48,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:59:48,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:59:48,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:48,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:49,334 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5281 [2022-07-21 07:59:49,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:59:49,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:59:49,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:59:49,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:59:49,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:49,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:49,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:49,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:49,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:49,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:49,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:49,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:59:49,688 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:59:49,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:59:49,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:59:49,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (1/1) ... [2022-07-21 07:59:49,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:59:49,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:59:49,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 07:59:49,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 07:59:49,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:59:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:59:49,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:59:49,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:59:49,834 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:59:49,835 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:59:52,685 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:59:52,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:59:52,698 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 07:59:52,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:59:52 BoogieIcfgContainer [2022-07-21 07:59:52,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:59:52,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:59:52,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:59:52,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:59:52,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:59:47" (1/3) ... [2022-07-21 07:59:52,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6147bbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:59:52, skipping insertion in model container [2022-07-21 07:59:52,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:48" (2/3) ... [2022-07-21 07:59:52,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6147bbac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:59:52, skipping insertion in model container [2022-07-21 07:59:52,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:59:52" (3/3) ... [2022-07-21 07:59:52,706 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c [2022-07-21 07:59:52,715 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:59:52,716 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:59:52,768 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:59:52,775 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@7c43ad7c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e505db7 [2022-07-21 07:59:52,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:59:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 07:59:52,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:52,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:52,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:52,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:52,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1822785820, now seen corresponding path program 1 times [2022-07-21 07:59:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:52,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475110347] [2022-07-21 07:59:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:52,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:53,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:53,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475110347] [2022-07-21 07:59:53,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475110347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:53,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:53,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:59:53,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024501822] [2022-07-21 07:59:53,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:53,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:53,035 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:55,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:55,798 INFO L93 Difference]: Finished difference Result 2614 states and 5014 transitions. [2022-07-21 07:59:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:55,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-07-21 07:59:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:55,820 INFO L225 Difference]: With dead ends: 2614 [2022-07-21 07:59:55,821 INFO L226 Difference]: Without dead ends: 1648 [2022-07-21 07:59:55,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:55,842 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1080 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:55,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 735 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 07:59:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-21 07:59:55,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-07-21 07:59:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.649453219927096) internal successors, (2715), 1647 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:55,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2715 transitions. [2022-07-21 07:59:55,907 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2715 transitions. Word has length 7 [2022-07-21 07:59:55,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:55,908 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2715 transitions. [2022-07-21 07:59:55,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2715 transitions. [2022-07-21 07:59:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 07:59:55,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:55,910 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] [2022-07-21 07:59:55,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:59:55,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:55,911 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2022-07-21 07:59:55,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:55,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438174209] [2022-07-21 07:59:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:55,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:56,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:56,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438174209] [2022-07-21 07:59:56,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438174209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:56,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:56,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:59:56,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083244098] [2022-07-21 07:59:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:56,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:59:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:59:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:59:56,016 INFO L87 Difference]: Start difference. First operand 1648 states and 2715 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:56,082 INFO L93 Difference]: Finished difference Result 1728 states and 2840 transitions. [2022-07-21 07:59:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 07:59:56,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-07-21 07:59:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:56,087 INFO L225 Difference]: With dead ends: 1728 [2022-07-21 07:59:56,088 INFO L226 Difference]: Without dead ends: 1648 [2022-07-21 07:59:56,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:59:56,090 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:56,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:56,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-21 07:59:56,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-07-21 07:59:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.6123936816524909) internal successors, (2654), 1647 states have internal predecessors, (2654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2654 transitions. [2022-07-21 07:59:56,116 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2654 transitions. Word has length 46 [2022-07-21 07:59:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:56,116 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2654 transitions. [2022-07-21 07:59:56,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2654 transitions. [2022-07-21 07:59:56,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 07:59:56,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:56,124 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:59:56,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:59:56,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:56,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash 59505501, now seen corresponding path program 1 times [2022-07-21 07:59:56,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:56,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084528349] [2022-07-21 07:59:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:56,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 07:59:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:56,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084528349] [2022-07-21 07:59:56,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084528349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:56,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:56,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:59:56,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080056380] [2022-07-21 07:59:56,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:56,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:56,214 INFO L87 Difference]: Start difference. First operand 1648 states and 2654 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:58,821 INFO L93 Difference]: Finished difference Result 4654 states and 7581 transitions. [2022-07-21 07:59:58,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:58,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 [2022-07-21 07:59:58,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:58,831 INFO L225 Difference]: With dead ends: 4654 [2022-07-21 07:59:58,832 INFO L226 Difference]: Without dead ends: 3150 [2022-07-21 07:59:58,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:58,834 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 913 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:58,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 663 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 07:59:58,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2022-07-21 07:59:58,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 3150. [2022-07-21 07:59:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 3148 states have (on average 1.4212198221092758) internal successors, (4474), 3149 states have internal predecessors, (4474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4474 transitions. [2022-07-21 07:59:58,880 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4474 transitions. Word has length 78 [2022-07-21 07:59:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:58,880 INFO L495 AbstractCegarLoop]: Abstraction has 3150 states and 4474 transitions. [2022-07-21 07:59:58,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:58,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4474 transitions. [2022-07-21 07:59:58,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 07:59:58,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:58,882 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:59:58,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:59:58,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1398624595, now seen corresponding path program 1 times [2022-07-21 07:59:58,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:58,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565322432] [2022-07-21 07:59:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:58,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:58,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:58,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:58,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565322432] [2022-07-21 07:59:58,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565322432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:58,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:58,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:59:58,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580166183] [2022-07-21 07:59:58,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:58,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:58,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:58,956 INFO L87 Difference]: Start difference. First operand 3150 states and 4474 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 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) [2022-07-21 08:00:01,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:01,308 INFO L93 Difference]: Finished difference Result 9160 states and 13041 transitions. [2022-07-21 08:00:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:01,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 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 [2022-07-21 08:00:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:01,325 INFO L225 Difference]: With dead ends: 9160 [2022-07-21 08:00:01,325 INFO L226 Difference]: Without dead ends: 6154 [2022-07-21 08:00:01,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:01,330 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 961 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:01,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 636 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 08:00:01,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2022-07-21 08:00:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6154. [2022-07-21 08:00:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 6152 states have (on average 1.2956762028608582) internal successors, (7971), 6153 states have internal predecessors, (7971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 7971 transitions. [2022-07-21 08:00:01,465 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 7971 transitions. Word has length 82 [2022-07-21 08:00:01,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:01,466 INFO L495 AbstractCegarLoop]: Abstraction has 6154 states and 7971 transitions. [2022-07-21 08:00:01,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 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) [2022-07-21 08:00:01,467 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 7971 transitions. [2022-07-21 08:00:01,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 08:00:01,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:01,468 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 08:00:01,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:00:01,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:01,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:01,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1093814204, now seen corresponding path program 1 times [2022-07-21 08:00:01,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:01,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408804985] [2022-07-21 08:00:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:01,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:01,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:01,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408804985] [2022-07-21 08:00:01,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408804985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:01,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:01,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:00:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485773881] [2022-07-21 08:00:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:01,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:01,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:01,586 INFO L87 Difference]: Start difference. First operand 6154 states and 7971 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 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) [2022-07-21 08:00:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:03,946 INFO L93 Difference]: Finished difference Result 18174 states and 23533 transitions. [2022-07-21 08:00:03,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:03,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 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 [2022-07-21 08:00:03,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:03,972 INFO L225 Difference]: With dead ends: 18174 [2022-07-21 08:00:03,973 INFO L226 Difference]: Without dead ends: 12164 [2022-07-21 08:00:03,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:03,979 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 1097 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:03,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 540 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 08:00:03,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12164 states. [2022-07-21 08:00:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12164 to 11411. [2022-07-21 08:00:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 11409 states have (on average 1.2290297133841703) internal successors, (14022), 11410 states have internal predecessors, (14022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 14022 transitions. [2022-07-21 08:00:04,107 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 14022 transitions. Word has length 88 [2022-07-21 08:00:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:04,107 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 14022 transitions. [2022-07-21 08:00:04,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 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) [2022-07-21 08:00:04,108 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 14022 transitions. [2022-07-21 08:00:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 08:00:04,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:04,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:04,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:00:04,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2022-07-21 08:00:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:04,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817400310] [2022-07-21 08:00:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:04,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:04,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817400310] [2022-07-21 08:00:04,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817400310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:04,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:04,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:00:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655917446] [2022-07-21 08:00:04,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:04,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:04,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:04,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:04,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:04,151 INFO L87 Difference]: Start difference. First operand 11411 states and 14022 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:04,186 INFO L93 Difference]: Finished difference Result 11557 states and 14254 transitions. [2022-07-21 08:00:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:04,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 08:00:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:04,206 INFO L225 Difference]: With dead ends: 11557 [2022-07-21 08:00:04,210 INFO L226 Difference]: Without dead ends: 11481 [2022-07-21 08:00:04,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:04,214 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:04,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:04,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11481 states. [2022-07-21 08:00:04,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11481 to 11479. [2022-07-21 08:00:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11479 states, 11477 states have (on average 1.2312450988934391) internal successors, (14131), 11478 states have internal predecessors, (14131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11479 states to 11479 states and 14131 transitions. [2022-07-21 08:00:04,353 INFO L78 Accepts]: Start accepts. Automaton has 11479 states and 14131 transitions. Word has length 106 [2022-07-21 08:00:04,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:04,355 INFO L495 AbstractCegarLoop]: Abstraction has 11479 states and 14131 transitions. [2022-07-21 08:00:04,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 11479 states and 14131 transitions. [2022-07-21 08:00:04,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 08:00:04,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:04,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:04,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:00:04,357 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:04,357 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2022-07-21 08:00:04,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:04,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727435075] [2022-07-21 08:00:04,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:04,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:04,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727435075] [2022-07-21 08:00:04,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727435075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:04,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:04,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:00:04,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630414017] [2022-07-21 08:00:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:04,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:04,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:04,411 INFO L87 Difference]: Start difference. First operand 11479 states and 14131 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:04,452 INFO L93 Difference]: Finished difference Result 11755 states and 14571 transitions. [2022-07-21 08:00:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:04,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 08:00:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:04,469 INFO L225 Difference]: With dead ends: 11755 [2022-07-21 08:00:04,469 INFO L226 Difference]: Without dead ends: 11611 [2022-07-21 08:00:04,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:04,475 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:04,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11611 states. [2022-07-21 08:00:04,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11611 to 11609. [2022-07-21 08:00:04,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11609 states, 11607 states have (on average 1.235289049711381) internal successors, (14338), 11608 states have internal predecessors, (14338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11609 states to 11609 states and 14338 transitions. [2022-07-21 08:00:04,600 INFO L78 Accepts]: Start accepts. Automaton has 11609 states and 14338 transitions. Word has length 106 [2022-07-21 08:00:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:04,601 INFO L495 AbstractCegarLoop]: Abstraction has 11609 states and 14338 transitions. [2022-07-21 08:00:04,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 11609 states and 14338 transitions. [2022-07-21 08:00:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 08:00:04,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:04,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:04,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:00:04,605 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:04,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:04,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2022-07-21 08:00:04,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:04,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186947678] [2022-07-21 08:00:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:04,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:04,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:04,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186947678] [2022-07-21 08:00:04,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186947678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:04,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:04,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:00:04,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471712032] [2022-07-21 08:00:04,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:04,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:04,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:04,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:04,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:04,686 INFO L87 Difference]: Start difference. First operand 11609 states and 14338 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:04,731 INFO L93 Difference]: Finished difference Result 12133 states and 15172 transitions. [2022-07-21 08:00:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:04,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 08:00:04,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:04,748 INFO L225 Difference]: With dead ends: 12133 [2022-07-21 08:00:04,749 INFO L226 Difference]: Without dead ends: 11859 [2022-07-21 08:00:04,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:04,753 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:04,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:04,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11859 states. [2022-07-21 08:00:04,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11859 to 11857. [2022-07-21 08:00:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11857 states, 11855 states have (on average 1.2425137072964993) internal successors, (14730), 11856 states have internal predecessors, (14730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11857 states to 11857 states and 14730 transitions. [2022-07-21 08:00:04,876 INFO L78 Accepts]: Start accepts. Automaton has 11857 states and 14730 transitions. Word has length 106 [2022-07-21 08:00:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:04,877 INFO L495 AbstractCegarLoop]: Abstraction has 11857 states and 14730 transitions. [2022-07-21 08:00:04,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:04,877 INFO L276 IsEmpty]: Start isEmpty. Operand 11857 states and 14730 transitions. [2022-07-21 08:00:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 08:00:04,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:04,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:04,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:00:04,882 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:04,883 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2022-07-21 08:00:04,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:04,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772034522] [2022-07-21 08:00:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:04,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:04,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:04,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772034522] [2022-07-21 08:00:04,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772034522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:04,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:04,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:00:04,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449190446] [2022-07-21 08:00:04,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:04,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:04,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:04,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:04,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:04,942 INFO L87 Difference]: Start difference. First operand 11857 states and 14730 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:05,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:05,063 INFO L93 Difference]: Finished difference Result 12853 states and 16308 transitions. [2022-07-21 08:00:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:05,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 08:00:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:05,081 INFO L225 Difference]: With dead ends: 12853 [2022-07-21 08:00:05,082 INFO L226 Difference]: Without dead ends: 12331 [2022-07-21 08:00:05,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:05,085 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:05,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:05,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2022-07-21 08:00:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 12329. [2022-07-21 08:00:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12329 states, 12327 states have (on average 1.2549687677455992) internal successors, (15470), 12328 states have internal predecessors, (15470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12329 states to 12329 states and 15470 transitions. [2022-07-21 08:00:05,236 INFO L78 Accepts]: Start accepts. Automaton has 12329 states and 15470 transitions. Word has length 106 [2022-07-21 08:00:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:05,237 INFO L495 AbstractCegarLoop]: Abstraction has 12329 states and 15470 transitions. [2022-07-21 08:00:05,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:05,237 INFO L276 IsEmpty]: Start isEmpty. Operand 12329 states and 15470 transitions. [2022-07-21 08:00:05,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 08:00:05,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:05,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:05,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:00:05,238 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:05,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2022-07-21 08:00:05,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:05,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653150125] [2022-07-21 08:00:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:05,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:05,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:05,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:05,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653150125] [2022-07-21 08:00:05,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653150125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:05,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:05,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:00:05,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299487571] [2022-07-21 08:00:05,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:05,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:00:05,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:00:05,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:00:05,328 INFO L87 Difference]: Start difference. First operand 12329 states and 15470 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:06,041 INFO L93 Difference]: Finished difference Result 28233 states and 40574 transitions. [2022-07-21 08:00:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:00:06,042 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-21 08:00:06,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:06,084 INFO L225 Difference]: With dead ends: 28233 [2022-07-21 08:00:06,085 INFO L226 Difference]: Without dead ends: 27239 [2022-07-21 08:00:06,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-21 08:00:06,094 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:06,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:00:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27239 states. [2022-07-21 08:00:06,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27239 to 13321. [2022-07-21 08:00:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13321 states, 13319 states have (on average 1.276822584278099) internal successors, (17006), 13320 states have internal predecessors, (17006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13321 states to 13321 states and 17006 transitions. [2022-07-21 08:00:06,373 INFO L78 Accepts]: Start accepts. Automaton has 13321 states and 17006 transitions. Word has length 106 [2022-07-21 08:00:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:06,374 INFO L495 AbstractCegarLoop]: Abstraction has 13321 states and 17006 transitions. [2022-07-21 08:00:06,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:06,374 INFO L276 IsEmpty]: Start isEmpty. Operand 13321 states and 17006 transitions. [2022-07-21 08:00:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 08:00:06,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:06,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:06,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:00:06,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:06,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2022-07-21 08:00:06,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:06,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277685962] [2022-07-21 08:00:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:06,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:06,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277685962] [2022-07-21 08:00:06,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277685962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:06,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:06,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:00:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059357186] [2022-07-21 08:00:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:06,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:06,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:06,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:06,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:06,430 INFO L87 Difference]: Start difference. First operand 13321 states and 17006 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:06,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:06,609 INFO L93 Difference]: Finished difference Result 16263 states and 21602 transitions. [2022-07-21 08:00:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:06,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-21 08:00:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:06,630 INFO L225 Difference]: With dead ends: 16263 [2022-07-21 08:00:06,630 INFO L226 Difference]: Without dead ends: 14277 [2022-07-21 08:00:06,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:06,637 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 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 [2022-07-21 08:00:06,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:06,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14277 states. [2022-07-21 08:00:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14277 to 14275. [2022-07-21 08:00:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14275 states, 14273 states have (on average 1.2941918307293492) internal successors, (18472), 14274 states have internal predecessors, (18472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 18472 transitions. [2022-07-21 08:00:06,982 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 18472 transitions. Word has length 108 [2022-07-21 08:00:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:06,983 INFO L495 AbstractCegarLoop]: Abstraction has 14275 states and 18472 transitions. [2022-07-21 08:00:06,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:06,984 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 18472 transitions. [2022-07-21 08:00:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 08:00:06,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:06,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:06,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:00:06,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:06,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2022-07-21 08:00:06,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:06,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895042307] [2022-07-21 08:00:06,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:06,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:07,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:07,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895042307] [2022-07-21 08:00:07,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895042307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:07,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:07,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:00:07,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370294206] [2022-07-21 08:00:07,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:07,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:00:07,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:00:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:00:07,212 INFO L87 Difference]: Start difference. First operand 14275 states and 18472 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:07,758 INFO L93 Difference]: Finished difference Result 17215 states and 23042 transitions. [2022-07-21 08:00:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:00:07,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-21 08:00:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:07,779 INFO L225 Difference]: With dead ends: 17215 [2022-07-21 08:00:07,779 INFO L226 Difference]: Without dead ends: 14277 [2022-07-21 08:00:07,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:00:07,786 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 8144 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8144 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:07,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8144 Valid, 2487 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:00:07,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14277 states. [2022-07-21 08:00:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14277 to 14275. [2022-07-21 08:00:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14275 states, 14273 states have (on average 1.2925103341974358) internal successors, (18448), 14274 states have internal predecessors, (18448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:08,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 18448 transitions. [2022-07-21 08:00:08,033 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 18448 transitions. Word has length 108 [2022-07-21 08:00:08,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:08,033 INFO L495 AbstractCegarLoop]: Abstraction has 14275 states and 18448 transitions. [2022-07-21 08:00:08,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 18448 transitions. [2022-07-21 08:00:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 08:00:08,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:08,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:00:08,034 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2022-07-21 08:00:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:08,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75311162] [2022-07-21 08:00:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:08,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:08,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:08,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75311162] [2022-07-21 08:00:08,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75311162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:08,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:08,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:00:08,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686561436] [2022-07-21 08:00:08,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:08,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:08,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:08,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:08,072 INFO L87 Difference]: Start difference. First operand 14275 states and 18448 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:08,398 INFO L93 Difference]: Finished difference Result 19863 states and 27058 transitions. [2022-07-21 08:00:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:08,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-21 08:00:08,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:08,419 INFO L225 Difference]: With dead ends: 19863 [2022-07-21 08:00:08,420 INFO L226 Difference]: Without dead ends: 16925 [2022-07-21 08:00:08,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:08,428 INFO L413 NwaCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:08,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16925 states. [2022-07-21 08:00:08,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16925 to 16923. [2022-07-21 08:00:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16923 states, 16921 states have (on average 1.3275811122274097) internal successors, (22464), 16922 states have internal predecessors, (22464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16923 states to 16923 states and 22464 transitions. [2022-07-21 08:00:08,806 INFO L78 Accepts]: Start accepts. Automaton has 16923 states and 22464 transitions. Word has length 108 [2022-07-21 08:00:08,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:08,807 INFO L495 AbstractCegarLoop]: Abstraction has 16923 states and 22464 transitions. [2022-07-21 08:00:08,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:08,807 INFO L276 IsEmpty]: Start isEmpty. Operand 16923 states and 22464 transitions. [2022-07-21 08:00:08,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 08:00:08,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:08,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:08,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:00:08,808 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:08,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:08,809 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2022-07-21 08:00:08,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:08,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242321186] [2022-07-21 08:00:08,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:08,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:08,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:08,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242321186] [2022-07-21 08:00:08,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242321186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:08,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:08,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:00:08,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254999732] [2022-07-21 08:00:08,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:08,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:08,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:08,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:08,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:08,848 INFO L87 Difference]: Start difference. First operand 16923 states and 22464 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:09,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:09,426 INFO L93 Difference]: Finished difference Result 27519 states and 38626 transitions. [2022-07-21 08:00:09,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:09,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-21 08:00:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:09,448 INFO L225 Difference]: With dead ends: 27519 [2022-07-21 08:00:09,449 INFO L226 Difference]: Without dead ends: 21933 [2022-07-21 08:00:09,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:09,459 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:09,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21933 states. [2022-07-21 08:00:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21933 to 21931. [2022-07-21 08:00:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21931 states, 21929 states have (on average 1.3665921838661135) internal successors, (29968), 21930 states have internal predecessors, (29968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21931 states to 21931 states and 29968 transitions. [2022-07-21 08:00:10,190 INFO L78 Accepts]: Start accepts. Automaton has 21931 states and 29968 transitions. Word has length 108 [2022-07-21 08:00:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:10,190 INFO L495 AbstractCegarLoop]: Abstraction has 21931 states and 29968 transitions. [2022-07-21 08:00:10,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 21931 states and 29968 transitions. [2022-07-21 08:00:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 08:00:10,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:10,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:10,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:00:10,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:10,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:10,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2022-07-21 08:00:10,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:10,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853232618] [2022-07-21 08:00:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:10,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:10,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:10,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853232618] [2022-07-21 08:00:10,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853232618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:10,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:10,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:00:10,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743260662] [2022-07-21 08:00:10,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:10,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:10,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:10,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:10,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:10,230 INFO L87 Difference]: Start difference. First operand 21931 states and 29968 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:11,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:11,399 INFO L93 Difference]: Finished difference Result 41967 states and 60178 transitions. [2022-07-21 08:00:11,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:11,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-21 08:00:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:11,440 INFO L225 Difference]: With dead ends: 41967 [2022-07-21 08:00:11,440 INFO L226 Difference]: Without dead ends: 31373 [2022-07-21 08:00:11,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:11,458 INFO L413 NwaCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:11,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:11,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31373 states. [2022-07-21 08:00:12,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31373 to 31371. [2022-07-21 08:00:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31371 states, 31369 states have (on average 1.400108387261309) internal successors, (43920), 31370 states have internal predecessors, (43920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31371 states to 31371 states and 43920 transitions. [2022-07-21 08:00:12,870 INFO L78 Accepts]: Start accepts. Automaton has 31371 states and 43920 transitions. Word has length 108 [2022-07-21 08:00:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:12,870 INFO L495 AbstractCegarLoop]: Abstraction has 31371 states and 43920 transitions. [2022-07-21 08:00:12,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:12,870 INFO L276 IsEmpty]: Start isEmpty. Operand 31371 states and 43920 transitions. [2022-07-21 08:00:12,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 08:00:12,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:12,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:12,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:00:12,872 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2022-07-21 08:00:12,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:12,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579426639] [2022-07-21 08:00:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:12,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:12,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:12,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579426639] [2022-07-21 08:00:12,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579426639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:12,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:12,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:00:12,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775521408] [2022-07-21 08:00:12,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:12,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:00:12,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:00:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:12,913 INFO L87 Difference]: Start difference. First operand 31371 states and 43920 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:15,388 INFO L93 Difference]: Finished difference Result 69135 states and 100114 transitions. [2022-07-21 08:00:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:00:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-21 08:00:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:15,446 INFO L225 Difference]: With dead ends: 69135 [2022-07-21 08:00:15,446 INFO L226 Difference]: Without dead ends: 49101 [2022-07-21 08:00:15,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:00:15,470 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:15,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49101 states. [2022-07-21 08:00:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49101 to 49099. [2022-07-21 08:00:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49099 states, 49097 states have (on average 1.4198830885797502) internal successors, (69712), 49098 states have internal predecessors, (69712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49099 states to 49099 states and 69712 transitions. [2022-07-21 08:00:18,306 INFO L78 Accepts]: Start accepts. Automaton has 49099 states and 69712 transitions. Word has length 108 [2022-07-21 08:00:18,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:18,307 INFO L495 AbstractCegarLoop]: Abstraction has 49099 states and 69712 transitions. [2022-07-21 08:00:18,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:18,307 INFO L276 IsEmpty]: Start isEmpty. Operand 49099 states and 69712 transitions. [2022-07-21 08:00:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 08:00:18,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:18,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:18,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:00:18,316 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:18,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2022-07-21 08:00:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:18,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302859135] [2022-07-21 08:00:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:18,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:00:18,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:18,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302859135] [2022-07-21 08:00:18,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302859135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:18,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:18,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:00:18,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104700909] [2022-07-21 08:00:18,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:18,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:00:18,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:18,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:00:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:00:18,374 INFO L87 Difference]: Start difference. First operand 49099 states and 69712 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:23,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:23,552 INFO L93 Difference]: Finished difference Result 81266 states and 116289 transitions. [2022-07-21 08:00:23,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:00:23,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-21 08:00:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:23,676 INFO L225 Difference]: With dead ends: 81266 [2022-07-21 08:00:23,676 INFO L226 Difference]: Without dead ends: 81264 [2022-07-21 08:00:23,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:00:23,697 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:23,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:00:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81264 states. [2022-07-21 08:00:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81264 to 50635. [2022-07-21 08:00:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50635 states, 50633 states have (on average 1.4046175419193017) internal successors, (71120), 50634 states have internal predecessors, (71120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50635 states to 50635 states and 71120 transitions. [2022-07-21 08:00:26,913 INFO L78 Accepts]: Start accepts. Automaton has 50635 states and 71120 transitions. Word has length 109 [2022-07-21 08:00:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:26,914 INFO L495 AbstractCegarLoop]: Abstraction has 50635 states and 71120 transitions. [2022-07-21 08:00:26,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 50635 states and 71120 transitions. [2022-07-21 08:00:26,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 08:00:26,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:26,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:26,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:00:26,932 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:26,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2022-07-21 08:00:26,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:26,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435492468] [2022-07-21 08:00:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:26,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 08:00:27,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:27,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435492468] [2022-07-21 08:00:27,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435492468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:27,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:27,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:00:27,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849482459] [2022-07-21 08:00:27,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:27,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:00:27,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:27,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:00:27,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:00:27,021 INFO L87 Difference]: Start difference. First operand 50635 states and 71120 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:49,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:49,575 INFO L93 Difference]: Finished difference Result 372573 states and 539417 transitions. [2022-07-21 08:00:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:00:49,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-07-21 08:00:49,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:50,338 INFO L225 Difference]: With dead ends: 372573 [2022-07-21 08:00:50,338 INFO L226 Difference]: Without dead ends: 333275 [2022-07-21 08:00:50,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:00:50,431 INFO L413 NwaCegarLoop]: 1738 mSDtfsCounter, 13254 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13254 SdHoareTripleChecker+Valid, 4427 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:50,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13254 Valid, 4427 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:00:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333275 states. [2022-07-21 08:00:58,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333275 to 89931. [2022-07-21 08:00:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89931 states, 89929 states have (on average 1.4228113289372728) internal successors, (127952), 89930 states have internal predecessors, (127952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89931 states to 89931 states and 127952 transitions. [2022-07-21 08:00:58,637 INFO L78 Accepts]: Start accepts. Automaton has 89931 states and 127952 transitions. Word has length 149 [2022-07-21 08:00:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:58,638 INFO L495 AbstractCegarLoop]: Abstraction has 89931 states and 127952 transitions. [2022-07-21 08:00:58,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 89931 states and 127952 transitions. [2022-07-21 08:00:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 08:00:58,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:58,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:00:58,693 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:58,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:58,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1273280147, now seen corresponding path program 1 times [2022-07-21 08:00:58,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:58,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172683534] [2022-07-21 08:00:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:58,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 08:00:58,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:58,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172683534] [2022-07-21 08:00:58,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172683534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:58,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:58,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:00:58,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613621759] [2022-07-21 08:00:58,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:58,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:00:58,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:58,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:00:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:00:58,828 INFO L87 Difference]: Start difference. First operand 89931 states and 127952 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)