./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4008c7bad6e9f0faf3cf745d811b7950453991ed3720a7122a910bf51077877c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:31:46,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:31:46,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:31:46,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:31:46,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:31:46,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:31:46,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:31:46,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:31:46,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:31:46,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:31:46,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:31:46,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:31:46,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:31:46,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:31:46,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:31:46,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:31:46,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:31:46,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:31:46,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:31:46,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:31:46,579 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:31:46,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:31:46,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:31:46,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:31:46,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:31:46,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:31:46,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:31:46,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:31:46,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:31:46,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:31:46,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:31:46,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:31:46,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:31:46,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:31:46,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:31:46,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:31:46,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:31:46,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:31:46,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:31:46,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:31:46,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:31:46,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:31:46,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:31:46,627 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:31:46,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:31:46,628 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:31:46,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:31:46,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:31:46,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:31:46,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:31:46,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:31:46,630 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:31:46,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:31:46,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:31:46,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:31:46,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:31:46,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:31:46,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:31:46,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:31:46,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:31:46,633 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:31:46,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:31:46,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:31:46,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:31:46,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:31:46,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:31:46,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:31:46,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:31:46,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:31:46,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:31:46,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:31:46,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:31:46,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:31:46,636 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:31:46,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:31:46,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:31:46,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4008c7bad6e9f0faf3cf745d811b7950453991ed3720a7122a910bf51077877c [2022-07-12 07:31:46,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:31:46,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:31:46,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:31:46,891 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:31:46,893 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:31:46,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2022-07-12 07:31:46,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465304f92/2f33c0412acd4e3f837f60f07a07f043/FLAGc2000efa9 [2022-07-12 07:31:47,337 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:31:47,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2022-07-12 07:31:47,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465304f92/2f33c0412acd4e3f837f60f07a07f043/FLAGc2000efa9 [2022-07-12 07:31:47,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/465304f92/2f33c0412acd4e3f837f60f07a07f043 [2022-07-12 07:31:47,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:31:47,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:31:47,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:31:47,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:31:47,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:31:47,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:31:47" (1/1) ... [2022-07-12 07:31:47,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560f6ba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:47, skipping insertion in model container [2022-07-12 07:31:47,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:31:47" (1/1) ... [2022-07-12 07:31:47,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:31:47,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:31:48,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10525,10538] [2022-07-12 07:31:48,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:31:48,107 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:31:48,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10525,10538] [2022-07-12 07:31:48,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:31:48,237 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:31:48,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48 WrapperNode [2022-07-12 07:31:48,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:31:48,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:31:48,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:31:48,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:31:48,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,295 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 841 [2022-07-12 07:31:48,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:31:48,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:31:48,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:31:48,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:31:48,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:31:48,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:31:48,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:31:48,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:31:48,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (1/1) ... [2022-07-12 07:31:48,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:31:48,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:31:48,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 07:31:48,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 07:31:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:31:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:31:48,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:31:48,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:31:48,601 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:31:48,602 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:31:49,200 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:31:49,208 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:31:49,208 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:31:49,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:31:49 BoogieIcfgContainer [2022-07-12 07:31:49,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:31:49,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:31:49,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:31:49,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:31:49,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:31:47" (1/3) ... [2022-07-12 07:31:49,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bd7bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:31:49, skipping insertion in model container [2022-07-12 07:31:49,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:31:48" (2/3) ... [2022-07-12 07:31:49,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bd7bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:31:49, skipping insertion in model container [2022-07-12 07:31:49,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:31:49" (3/3) ... [2022-07-12 07:31:49,220 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2022-07-12 07:31:49,232 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:31:49,233 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:31:49,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:31:49,321 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@32d3de67, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@690b014a [2022-07-12 07:31:49,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:31:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 200 states have (on average 1.765) internal successors, (353), 201 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:49,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 07:31:49,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:49,354 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] [2022-07-12 07:31:49,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:49,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:49,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2055920229, now seen corresponding path program 1 times [2022-07-12 07:31:49,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:49,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844043275] [2022-07-12 07:31:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:49,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:49,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:49,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844043275] [2022-07-12 07:31:49,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844043275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:49,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:49,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:31:49,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119396889] [2022-07-12 07:31:49,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:49,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:31:49,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:49,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:31:49,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:31:49,956 INFO L87 Difference]: Start difference. First operand has 202 states, 200 states have (on average 1.765) internal successors, (353), 201 states have internal predecessors, (353), 0 states have call successors, (0), 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 9 states, 9 states have (on average 12.0) internal successors, (108), 9 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) [2022-07-12 07:31:50,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:50,702 INFO L93 Difference]: Finished difference Result 1459 states and 2342 transitions. [2022-07-12 07:31:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:31:50,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 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 [2022-07-12 07:31:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:50,721 INFO L225 Difference]: With dead ends: 1459 [2022-07-12 07:31:50,721 INFO L226 Difference]: Without dead ends: 1333 [2022-07-12 07:31:50,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-12 07:31:50,727 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 2676 mSDsluCounter, 6172 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 7040 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:50,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 7040 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:31:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2022-07-12 07:31:50,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 304. [2022-07-12 07:31:50,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.4422442244224423) internal successors, (437), 303 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 437 transitions. [2022-07-12 07:31:50,812 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 437 transitions. Word has length 108 [2022-07-12 07:31:50,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:50,813 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 437 transitions. [2022-07-12 07:31:50,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 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) [2022-07-12 07:31:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 437 transitions. [2022-07-12 07:31:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 07:31:50,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:50,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:50,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:31:50,817 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:50,818 INFO L85 PathProgramCache]: Analyzing trace with hash -924120728, now seen corresponding path program 1 times [2022-07-12 07:31:50,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:50,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248513000] [2022-07-12 07:31:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:50,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:50,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:50,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248513000] [2022-07-12 07:31:50,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248513000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:50,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:50,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:31:50,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133554744] [2022-07-12 07:31:50,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:50,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:31:50,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:50,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:31:50,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:31:50,983 INFO L87 Difference]: Start difference. First operand 304 states and 437 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:51,459 INFO L93 Difference]: Finished difference Result 1560 states and 2419 transitions. [2022-07-12 07:31:51,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:31:51,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-12 07:31:51,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:51,468 INFO L225 Difference]: With dead ends: 1560 [2022-07-12 07:31:51,468 INFO L226 Difference]: Without dead ends: 1400 [2022-07-12 07:31:51,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:31:51,476 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 1946 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:51,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 4018 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:31:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-07-12 07:31:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 483. [2022-07-12 07:31:51,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.495850622406639) internal successors, (721), 482 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 721 transitions. [2022-07-12 07:31:51,546 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 721 transitions. Word has length 110 [2022-07-12 07:31:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:51,546 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 721 transitions. [2022-07-12 07:31:51,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 721 transitions. [2022-07-12 07:31:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 07:31:51,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:51,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:51,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:31:51,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:51,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1292919580, now seen corresponding path program 1 times [2022-07-12 07:31:51,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:51,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846955615] [2022-07-12 07:31:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:51,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:51,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:51,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846955615] [2022-07-12 07:31:51,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846955615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:51,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:51,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:31:51,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896551455] [2022-07-12 07:31:51,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:51,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:31:51,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:31:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:31:51,692 INFO L87 Difference]: Start difference. First operand 483 states and 721 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:52,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:52,143 INFO L93 Difference]: Finished difference Result 1739 states and 2703 transitions. [2022-07-12 07:31:52,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:31:52,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-12 07:31:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:52,151 INFO L225 Difference]: With dead ends: 1739 [2022-07-12 07:31:52,151 INFO L226 Difference]: Without dead ends: 1579 [2022-07-12 07:31:52,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:31:52,159 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 1941 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:52,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 3067 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:31:52,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2022-07-12 07:31:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 741. [2022-07-12 07:31:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.527027027027027) internal successors, (1130), 740 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1130 transitions. [2022-07-12 07:31:52,280 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1130 transitions. Word has length 110 [2022-07-12 07:31:52,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:52,281 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1130 transitions. [2022-07-12 07:31:52,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1130 transitions. [2022-07-12 07:31:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 07:31:52,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:52,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:52,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:31:52,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1295133060, now seen corresponding path program 1 times [2022-07-12 07:31:52,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:52,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696895825] [2022-07-12 07:31:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:52,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:52,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:52,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696895825] [2022-07-12 07:31:52,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696895825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:52,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:52,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:31:52,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300790890] [2022-07-12 07:31:52,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:52,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:31:52,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:31:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:31:52,443 INFO L87 Difference]: Start difference. First operand 741 states and 1130 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:52,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:52,920 INFO L93 Difference]: Finished difference Result 1913 states and 2979 transitions. [2022-07-12 07:31:52,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:31:52,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-12 07:31:52,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:52,928 INFO L225 Difference]: With dead ends: 1913 [2022-07-12 07:31:52,929 INFO L226 Difference]: Without dead ends: 1753 [2022-07-12 07:31:52,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:31:52,936 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 2145 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:52,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 2916 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:31:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-07-12 07:31:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 915. [2022-07-12 07:31:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 914 states have (on average 1.538293216630197) internal successors, (1406), 914 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1406 transitions. [2022-07-12 07:31:53,065 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1406 transitions. Word has length 110 [2022-07-12 07:31:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:53,065 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 1406 transitions. [2022-07-12 07:31:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:53,066 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1406 transitions. [2022-07-12 07:31:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 07:31:53,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:53,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:53,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:31:53,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:53,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash 722932112, now seen corresponding path program 1 times [2022-07-12 07:31:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:53,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499454436] [2022-07-12 07:31:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:53,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:53,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:53,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499454436] [2022-07-12 07:31:53,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499454436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:53,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:53,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:31:53,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446812799] [2022-07-12 07:31:53,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:53,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:31:53,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:53,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:31:53,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:31:53,190 INFO L87 Difference]: Start difference. First operand 915 states and 1406 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:53,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:53,676 INFO L93 Difference]: Finished difference Result 2082 states and 3247 transitions. [2022-07-12 07:31:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:31:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-12 07:31:53,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:53,684 INFO L225 Difference]: With dead ends: 2082 [2022-07-12 07:31:53,684 INFO L226 Difference]: Without dead ends: 1922 [2022-07-12 07:31:53,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:31:53,686 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 2347 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:53,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2347 Valid, 2685 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:31:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2022-07-12 07:31:53,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1079. [2022-07-12 07:31:53,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.5454545454545454) internal successors, (1666), 1078 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:53,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1666 transitions. [2022-07-12 07:31:53,838 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1666 transitions. Word has length 110 [2022-07-12 07:31:53,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:53,839 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1666 transitions. [2022-07-12 07:31:53,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1666 transitions. [2022-07-12 07:31:53,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 07:31:53,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:53,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:53,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:31:53,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:53,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1525369156, now seen corresponding path program 1 times [2022-07-12 07:31:53,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:53,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141879233] [2022-07-12 07:31:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:53,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:53,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:53,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141879233] [2022-07-12 07:31:53,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141879233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:53,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:53,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:31:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031211397] [2022-07-12 07:31:53,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:53,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:31:53,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:31:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:31:53,952 INFO L87 Difference]: Start difference. First operand 1079 states and 1666 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:54,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:54,435 INFO L93 Difference]: Finished difference Result 2241 states and 3499 transitions. [2022-07-12 07:31:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:31:54,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-12 07:31:54,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:54,444 INFO L225 Difference]: With dead ends: 2241 [2022-07-12 07:31:54,444 INFO L226 Difference]: Without dead ends: 2081 [2022-07-12 07:31:54,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:31:54,445 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 2850 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:54,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2850 Valid, 2572 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:31:54,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2022-07-12 07:31:54,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1238. [2022-07-12 07:31:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.5505254648342766) internal successors, (1918), 1237 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1918 transitions. [2022-07-12 07:31:54,603 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1918 transitions. Word has length 110 [2022-07-12 07:31:54,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:54,603 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 1918 transitions. [2022-07-12 07:31:54,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1918 transitions. [2022-07-12 07:31:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 07:31:54,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:54,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:54,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:31:54,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1186267839, now seen corresponding path program 1 times [2022-07-12 07:31:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:54,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537223400] [2022-07-12 07:31:54,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:54,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:54,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:54,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537223400] [2022-07-12 07:31:54,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537223400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:54,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:54,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:31:54,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607976419] [2022-07-12 07:31:54,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:54,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:31:54,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:31:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:31:54,872 INFO L87 Difference]: Start difference. First operand 1238 states and 1918 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:55,376 INFO L93 Difference]: Finished difference Result 2269 states and 3552 transitions. [2022-07-12 07:31:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:31:55,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-12 07:31:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:55,381 INFO L225 Difference]: With dead ends: 2269 [2022-07-12 07:31:55,382 INFO L226 Difference]: Without dead ends: 1240 [2022-07-12 07:31:55,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:31:55,384 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 677 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:55,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1394 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:31:55,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2022-07-12 07:31:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1238. [2022-07-12 07:31:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.5448666127728374) internal successors, (1911), 1237 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1911 transitions. [2022-07-12 07:31:55,561 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1911 transitions. Word has length 110 [2022-07-12 07:31:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:55,561 INFO L495 AbstractCegarLoop]: Abstraction has 1238 states and 1911 transitions. [2022-07-12 07:31:55,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:55,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1911 transitions. [2022-07-12 07:31:55,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 07:31:55,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:55,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:55,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:31:55,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:55,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash 943143488, now seen corresponding path program 1 times [2022-07-12 07:31:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:55,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264028888] [2022-07-12 07:31:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:55,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:55,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:55,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264028888] [2022-07-12 07:31:55,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264028888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:55,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:55,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:31:55,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66047572] [2022-07-12 07:31:55,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:55,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:31:55,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:55,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:31:55,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:31:55,617 INFO L87 Difference]: Start difference. First operand 1238 states and 1911 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:55,975 INFO L93 Difference]: Finished difference Result 3212 states and 5022 transitions. [2022-07-12 07:31:55,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:31:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-12 07:31:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:55,983 INFO L225 Difference]: With dead ends: 3212 [2022-07-12 07:31:55,983 INFO L226 Difference]: Without dead ends: 2183 [2022-07-12 07:31:55,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:31:55,985 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 115 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:55,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 640 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:31:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2022-07-12 07:31:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 2181. [2022-07-12 07:31:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.5454128440366972) internal successors, (3369), 2180 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3369 transitions. [2022-07-12 07:31:56,265 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3369 transitions. Word has length 110 [2022-07-12 07:31:56,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:56,266 INFO L495 AbstractCegarLoop]: Abstraction has 2181 states and 3369 transitions. [2022-07-12 07:31:56,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:56,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3369 transitions. [2022-07-12 07:31:56,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 07:31:56,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:56,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:56,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:31:56,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:56,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:56,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2091479554, now seen corresponding path program 1 times [2022-07-12 07:31:56,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:56,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333071721] [2022-07-12 07:31:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:56,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:56,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:56,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333071721] [2022-07-12 07:31:56,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333071721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:56,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:56,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:31:56,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784816687] [2022-07-12 07:31:56,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:56,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:31:56,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:56,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:31:56,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:31:56,366 INFO L87 Difference]: Start difference. First operand 2181 states and 3369 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:57,170 INFO L93 Difference]: Finished difference Result 4357 states and 6769 transitions. [2022-07-12 07:31:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:31:57,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-12 07:31:57,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:57,187 INFO L225 Difference]: With dead ends: 4357 [2022-07-12 07:31:57,187 INFO L226 Difference]: Without dead ends: 4052 [2022-07-12 07:31:57,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:31:57,189 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 2152 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:57,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2152 Valid, 2863 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:31:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2022-07-12 07:31:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 2484. [2022-07-12 07:31:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2483 states have (on average 1.5477245267821185) internal successors, (3843), 2483 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3843 transitions. [2022-07-12 07:31:57,586 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3843 transitions. Word has length 110 [2022-07-12 07:31:57,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:57,586 INFO L495 AbstractCegarLoop]: Abstraction has 2484 states and 3843 transitions. [2022-07-12 07:31:57,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:57,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3843 transitions. [2022-07-12 07:31:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 07:31:57,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:57,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:57,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:31:57,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:57,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:57,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1690423504, now seen corresponding path program 1 times [2022-07-12 07:31:57,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:57,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241196775] [2022-07-12 07:31:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:57,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:57,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:57,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241196775] [2022-07-12 07:31:57,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241196775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:57,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:57,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:31:57,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737385690] [2022-07-12 07:31:57,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:57,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:31:57,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:57,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:31:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:31:57,696 INFO L87 Difference]: Start difference. First operand 2484 states and 3843 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:58,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:58,616 INFO L93 Difference]: Finished difference Result 4666 states and 7252 transitions. [2022-07-12 07:31:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 07:31:58,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-12 07:31:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:58,629 INFO L225 Difference]: With dead ends: 4666 [2022-07-12 07:31:58,630 INFO L226 Difference]: Without dead ends: 4361 [2022-07-12 07:31:58,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:31:58,631 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 2200 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:58,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2200 Valid, 3676 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:31:58,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2022-07-12 07:31:59,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 2798. [2022-07-12 07:31:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5495173400071505) internal successors, (4334), 2797 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4334 transitions. [2022-07-12 07:31:59,107 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4334 transitions. Word has length 110 [2022-07-12 07:31:59,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:59,108 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4334 transitions. [2022-07-12 07:31:59,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4334 transitions. [2022-07-12 07:31:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 07:31:59,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:59,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:31:59,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:31:59,110 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1882311825, now seen corresponding path program 1 times [2022-07-12 07:31:59,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:59,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531049275] [2022-07-12 07:31:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:59,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:59,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531049275] [2022-07-12 07:31:59,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531049275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:59,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:59,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:31:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525639275] [2022-07-12 07:31:59,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:59,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:31:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:31:59,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:31:59,170 INFO L87 Difference]: Start difference. First operand 2798 states and 4334 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:31:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:59,688 INFO L93 Difference]: Finished difference Result 5539 states and 8610 transitions. [2022-07-12 07:31:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:31:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-07-12 07:31:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:59,712 INFO L225 Difference]: With dead ends: 5539 [2022-07-12 07:31:59,713 INFO L226 Difference]: Without dead ends: 2798 [2022-07-12 07:31:59,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:31:59,717 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 738 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:59,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 149 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:31:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-12 07:32:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2022-07-12 07:32:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5370039327851268) internal successors, (4299), 2797 states have internal predecessors, (4299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4299 transitions. [2022-07-12 07:32:00,074 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4299 transitions. Word has length 111 [2022-07-12 07:32:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:00,074 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4299 transitions. [2022-07-12 07:32:00,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4299 transitions. [2022-07-12 07:32:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 07:32:00,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:00,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:00,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:32:00,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1093414131, now seen corresponding path program 1 times [2022-07-12 07:32:00,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:00,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009581546] [2022-07-12 07:32:00,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:00,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:00,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:00,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009581546] [2022-07-12 07:32:00,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009581546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:00,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:00,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:32:00,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115826170] [2022-07-12 07:32:00,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:00,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:32:00,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:00,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:32:00,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:32:00,150 INFO L87 Difference]: Start difference. First operand 2798 states and 4299 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:00,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:00,666 INFO L93 Difference]: Finished difference Result 5523 states and 8521 transitions. [2022-07-12 07:32:00,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:32:00,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-07-12 07:32:00,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:00,671 INFO L225 Difference]: With dead ends: 5523 [2022-07-12 07:32:00,671 INFO L226 Difference]: Without dead ends: 2798 [2022-07-12 07:32:00,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:32:00,676 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 687 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:00,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 181 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:32:00,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-12 07:32:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2022-07-12 07:32:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5244905255631034) internal successors, (4264), 2797 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4264 transitions. [2022-07-12 07:32:01,036 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4264 transitions. Word has length 112 [2022-07-12 07:32:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:01,039 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4264 transitions. [2022-07-12 07:32:01,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4264 transitions. [2022-07-12 07:32:01,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 07:32:01,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:01,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:01,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:32:01,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash 596896751, now seen corresponding path program 1 times [2022-07-12 07:32:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:01,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908678454] [2022-07-12 07:32:01,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:01,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:01,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:01,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908678454] [2022-07-12 07:32:01,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908678454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:01,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:01,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:32:01,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790319495] [2022-07-12 07:32:01,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:01,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:32:01,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:01,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:32:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:32:01,108 INFO L87 Difference]: Start difference. First operand 2798 states and 4264 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:01,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:01,694 INFO L93 Difference]: Finished difference Result 5515 states and 8442 transitions. [2022-07-12 07:32:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:32:01,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-07-12 07:32:01,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:01,699 INFO L225 Difference]: With dead ends: 5515 [2022-07-12 07:32:01,699 INFO L226 Difference]: Without dead ends: 2798 [2022-07-12 07:32:01,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:32:01,702 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 661 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:01,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 201 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:32:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-12 07:32:02,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2022-07-12 07:32:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5119771183410797) internal successors, (4229), 2797 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4229 transitions. [2022-07-12 07:32:02,110 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4229 transitions. Word has length 113 [2022-07-12 07:32:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:02,111 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4229 transitions. [2022-07-12 07:32:02,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4229 transitions. [2022-07-12 07:32:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 07:32:02,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:02,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:02,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 07:32:02,113 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:02,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:02,114 INFO L85 PathProgramCache]: Analyzing trace with hash 914047091, now seen corresponding path program 1 times [2022-07-12 07:32:02,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:02,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773481431] [2022-07-12 07:32:02,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:02,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:02,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:02,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773481431] [2022-07-12 07:32:02,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773481431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:02,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:02,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:32:02,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568057571] [2022-07-12 07:32:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:02,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:32:02,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:02,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:32:02,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:32:02,175 INFO L87 Difference]: Start difference. First operand 2798 states and 4229 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:02,756 INFO L93 Difference]: Finished difference Result 5527 states and 8386 transitions. [2022-07-12 07:32:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:32:02,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-07-12 07:32:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:02,761 INFO L225 Difference]: With dead ends: 5527 [2022-07-12 07:32:02,761 INFO L226 Difference]: Without dead ends: 2798 [2022-07-12 07:32:02,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:32:02,765 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 686 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:02,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 173 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:32:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-12 07:32:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2022-07-12 07:32:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.499463711119056) internal successors, (4194), 2797 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4194 transitions. [2022-07-12 07:32:03,143 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4194 transitions. Word has length 114 [2022-07-12 07:32:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:03,143 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4194 transitions. [2022-07-12 07:32:03,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4194 transitions. [2022-07-12 07:32:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 07:32:03,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:03,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:03,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 07:32:03,147 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash -932538653, now seen corresponding path program 1 times [2022-07-12 07:32:03,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:03,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383287738] [2022-07-12 07:32:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:03,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:03,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:03,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383287738] [2022-07-12 07:32:03,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383287738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:03,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:03,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:32:03,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18829969] [2022-07-12 07:32:03,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:03,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:32:03,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:03,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:32:03,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:32:03,242 INFO L87 Difference]: Start difference. First operand 2798 states and 4194 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:03,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:03,766 INFO L93 Difference]: Finished difference Result 5535 states and 8326 transitions. [2022-07-12 07:32:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:32:03,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-07-12 07:32:03,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:03,771 INFO L225 Difference]: With dead ends: 5535 [2022-07-12 07:32:03,772 INFO L226 Difference]: Without dead ends: 2798 [2022-07-12 07:32:03,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:32:03,775 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 702 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:03,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 157 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:32:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-12 07:32:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2022-07-12 07:32:04,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.4869503038970326) internal successors, (4159), 2797 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4159 transitions. [2022-07-12 07:32:04,166 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4159 transitions. Word has length 115 [2022-07-12 07:32:04,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:04,166 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4159 transitions. [2022-07-12 07:32:04,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:04,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4159 transitions. [2022-07-12 07:32:04,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 07:32:04,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:04,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:04,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 07:32:04,169 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:04,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:04,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1866315149, now seen corresponding path program 1 times [2022-07-12 07:32:04,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:04,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88441797] [2022-07-12 07:32:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:04,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:04,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:04,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88441797] [2022-07-12 07:32:04,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88441797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:04,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:04,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:32:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010276547] [2022-07-12 07:32:04,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:04,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:32:04,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:04,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:32:04,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:32:04,224 INFO L87 Difference]: Start difference. First operand 2798 states and 4159 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:04,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:04,764 INFO L93 Difference]: Finished difference Result 5531 states and 8252 transitions. [2022-07-12 07:32:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:32:04,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-07-12 07:32:04,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:04,769 INFO L225 Difference]: With dead ends: 5531 [2022-07-12 07:32:04,769 INFO L226 Difference]: Without dead ends: 2798 [2022-07-12 07:32:04,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:32:04,772 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 684 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:04,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 165 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:32:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-12 07:32:05,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2022-07-12 07:32:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.474436896675009) internal successors, (4124), 2797 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4124 transitions. [2022-07-12 07:32:05,209 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4124 transitions. Word has length 116 [2022-07-12 07:32:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:05,209 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4124 transitions. [2022-07-12 07:32:05,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4124 transitions. [2022-07-12 07:32:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 07:32:05,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:05,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:05,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 07:32:05,211 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:05,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1607436073, now seen corresponding path program 1 times [2022-07-12 07:32:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:05,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478696401] [2022-07-12 07:32:05,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:05,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:05,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:05,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478696401] [2022-07-12 07:32:05,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478696401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:05,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:05,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:32:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573335404] [2022-07-12 07:32:05,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:05,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:32:05,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:32:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:32:05,271 INFO L87 Difference]: Start difference. First operand 2798 states and 4124 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:05,840 INFO L93 Difference]: Finished difference Result 5519 states and 8170 transitions. [2022-07-12 07:32:05,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:32:05,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-07-12 07:32:05,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:05,849 INFO L225 Difference]: With dead ends: 5519 [2022-07-12 07:32:05,849 INFO L226 Difference]: Without dead ends: 2798 [2022-07-12 07:32:05,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:32:05,853 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 642 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:05,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 189 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:32:05,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-07-12 07:32:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2022-07-12 07:32:06,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.4619234894529853) internal successors, (4089), 2797 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:06,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4089 transitions. [2022-07-12 07:32:06,375 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4089 transitions. Word has length 117 [2022-07-12 07:32:06,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:06,375 INFO L495 AbstractCegarLoop]: Abstraction has 2798 states and 4089 transitions. [2022-07-12 07:32:06,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4089 transitions. [2022-07-12 07:32:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 07:32:06,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:06,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:06,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 07:32:06,377 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash 154166167, now seen corresponding path program 1 times [2022-07-12 07:32:06,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:06,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265884520] [2022-07-12 07:32:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:06,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:06,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:06,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265884520] [2022-07-12 07:32:06,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265884520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:06,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:06,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:32:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155284500] [2022-07-12 07:32:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:06,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:32:06,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:06,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:32:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:32:06,482 INFO L87 Difference]: Start difference. First operand 2798 states and 4089 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:07,433 INFO L93 Difference]: Finished difference Result 4634 states and 6793 transitions. [2022-07-12 07:32:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:32:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-07-12 07:32:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:07,442 INFO L225 Difference]: With dead ends: 4634 [2022-07-12 07:32:07,442 INFO L226 Difference]: Without dead ends: 4632 [2022-07-12 07:32:07,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:32:07,444 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 226 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:07,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 1059 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:32:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2022-07-12 07:32:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 2814. [2022-07-12 07:32:08,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.4560966939210807) internal successors, (4096), 2813 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4096 transitions. [2022-07-12 07:32:08,078 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4096 transitions. Word has length 118 [2022-07-12 07:32:08,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:08,078 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 4096 transitions. [2022-07-12 07:32:08,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:08,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4096 transitions. [2022-07-12 07:32:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 07:32:08,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:08,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:08,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 07:32:08,080 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:08,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1441850003, now seen corresponding path program 1 times [2022-07-12 07:32:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:08,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016915928] [2022-07-12 07:32:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:08,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:08,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:08,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016915928] [2022-07-12 07:32:08,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016915928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:08,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:08,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:32:08,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659666218] [2022-07-12 07:32:08,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:08,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:32:08,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:08,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:32:08,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:32:08,257 INFO L87 Difference]: Start difference. First operand 2814 states and 4096 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:09,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:09,868 INFO L93 Difference]: Finished difference Result 8099 states and 11849 transitions. [2022-07-12 07:32:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 07:32:09,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-07-12 07:32:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:09,876 INFO L225 Difference]: With dead ends: 8099 [2022-07-12 07:32:09,876 INFO L226 Difference]: Without dead ends: 5408 [2022-07-12 07:32:09,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-07-12 07:32:09,880 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1524 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:09,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 459 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:32:09,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2022-07-12 07:32:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 2814. [2022-07-12 07:32:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.4557412015641664) internal successors, (4095), 2813 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4095 transitions. [2022-07-12 07:32:10,494 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4095 transitions. Word has length 118 [2022-07-12 07:32:10,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:10,494 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 4095 transitions. [2022-07-12 07:32:10,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:10,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4095 transitions. [2022-07-12 07:32:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 07:32:10,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:10,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:10,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 07:32:10,496 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:10,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1402661961, now seen corresponding path program 1 times [2022-07-12 07:32:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:10,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879609393] [2022-07-12 07:32:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:10,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:10,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:10,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879609393] [2022-07-12 07:32:10,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879609393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:10,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:10,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:32:10,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078906853] [2022-07-12 07:32:10,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 07:32:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 07:32:10,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:32:10,740 INFO L87 Difference]: Start difference. First operand 2814 states and 4095 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:14,139 INFO L93 Difference]: Finished difference Result 13680 states and 19897 transitions. [2022-07-12 07:32:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 07:32:14,140 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-07-12 07:32:14,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:14,153 INFO L225 Difference]: With dead ends: 13680 [2022-07-12 07:32:14,154 INFO L226 Difference]: Without dead ends: 11055 [2022-07-12 07:32:14,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2022-07-12 07:32:14,159 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1986 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1986 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:14,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1986 Valid, 1180 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 07:32:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11055 states. [2022-07-12 07:32:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11055 to 2859. [2022-07-12 07:32:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2858 states have (on average 1.4548635409377186) internal successors, (4158), 2858 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:14,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 4158 transitions. [2022-07-12 07:32:14,861 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 4158 transitions. Word has length 119 [2022-07-12 07:32:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:14,861 INFO L495 AbstractCegarLoop]: Abstraction has 2859 states and 4158 transitions. [2022-07-12 07:32:14,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:14,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 4158 transitions. [2022-07-12 07:32:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 07:32:14,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:14,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:14,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 07:32:14,864 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1554016695, now seen corresponding path program 1 times [2022-07-12 07:32:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:14,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501174721] [2022-07-12 07:32:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:14,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:15,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:15,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501174721] [2022-07-12 07:32:15,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501174721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:15,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:15,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:32:15,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544514848] [2022-07-12 07:32:15,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:15,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:32:15,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:32:15,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:32:15,006 INFO L87 Difference]: Start difference. First operand 2859 states and 4158 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:16,668 INFO L93 Difference]: Finished difference Result 8226 states and 11990 transitions. [2022-07-12 07:32:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:32:16,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-07-12 07:32:16,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:16,676 INFO L225 Difference]: With dead ends: 8226 [2022-07-12 07:32:16,676 INFO L226 Difference]: Without dead ends: 5595 [2022-07-12 07:32:16,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:32:16,680 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 2013 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:16,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2013 Valid, 520 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:32:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5595 states. [2022-07-12 07:32:17,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5595 to 2814. [2022-07-12 07:32:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.4536082474226804) internal successors, (4089), 2813 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:17,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4089 transitions. [2022-07-12 07:32:17,281 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4089 transitions. Word has length 119 [2022-07-12 07:32:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:17,282 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 4089 transitions. [2022-07-12 07:32:17,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4089 transitions. [2022-07-12 07:32:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 07:32:17,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:17,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:17,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 07:32:17,284 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 461834997, now seen corresponding path program 1 times [2022-07-12 07:32:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:17,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720970991] [2022-07-12 07:32:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:17,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:17,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720970991] [2022-07-12 07:32:17,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720970991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:17,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:17,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:32:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844264911] [2022-07-12 07:32:17,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:17,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 07:32:17,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 07:32:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:32:17,490 INFO L87 Difference]: Start difference. First operand 2814 states and 4089 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:21,015 INFO L93 Difference]: Finished difference Result 13232 states and 19110 transitions. [2022-07-12 07:32:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 07:32:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-07-12 07:32:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:21,028 INFO L225 Difference]: With dead ends: 13232 [2022-07-12 07:32:21,029 INFO L226 Difference]: Without dead ends: 10638 [2022-07-12 07:32:21,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2022-07-12 07:32:21,032 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 2079 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:21,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 1127 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:32:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10638 states. [2022-07-12 07:32:21,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10638 to 2927. [2022-07-12 07:32:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2926 states have (on average 1.4542036910457963) internal successors, (4255), 2926 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4255 transitions. [2022-07-12 07:32:21,777 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4255 transitions. Word has length 119 [2022-07-12 07:32:21,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:21,777 INFO L495 AbstractCegarLoop]: Abstraction has 2927 states and 4255 transitions. [2022-07-12 07:32:21,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:21,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4255 transitions. [2022-07-12 07:32:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 07:32:21,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:21,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:21,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 07:32:21,779 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:21,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:21,780 INFO L85 PathProgramCache]: Analyzing trace with hash 247898829, now seen corresponding path program 1 times [2022-07-12 07:32:21,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:21,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20116197] [2022-07-12 07:32:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:21,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:21,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20116197] [2022-07-12 07:32:21,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20116197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:21,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:21,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:32:21,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106368856] [2022-07-12 07:32:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:21,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:32:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:32:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:32:21,961 INFO L87 Difference]: Start difference. First operand 2927 states and 4255 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:24,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:24,426 INFO L93 Difference]: Finished difference Result 8436 states and 12299 transitions. [2022-07-12 07:32:24,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:32:24,426 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-07-12 07:32:24,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:24,432 INFO L225 Difference]: With dead ends: 8436 [2022-07-12 07:32:24,432 INFO L226 Difference]: Without dead ends: 5681 [2022-07-12 07:32:24,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:32:24,435 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 1585 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:24,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 686 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:32:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2022-07-12 07:32:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 2927. [2022-07-12 07:32:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2926 states have (on average 1.4521531100478469) internal successors, (4249), 2926 states have internal predecessors, (4249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4249 transitions. [2022-07-12 07:32:25,159 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4249 transitions. Word has length 120 [2022-07-12 07:32:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:25,159 INFO L495 AbstractCegarLoop]: Abstraction has 2927 states and 4249 transitions. [2022-07-12 07:32:25,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4249 transitions. [2022-07-12 07:32:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 07:32:25,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:25,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:25,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 07:32:25,161 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:25,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1831488448, now seen corresponding path program 1 times [2022-07-12 07:32:25,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:25,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97956995] [2022-07-12 07:32:25,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:25,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:25,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:25,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97956995] [2022-07-12 07:32:25,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97956995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:25,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:25,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:32:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850268215] [2022-07-12 07:32:25,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:25,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:32:25,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:32:25,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:32:25,296 INFO L87 Difference]: Start difference. First operand 2927 states and 4249 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:28,605 INFO L93 Difference]: Finished difference Result 13046 states and 18907 transitions. [2022-07-12 07:32:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 07:32:28,606 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-07-12 07:32:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:28,616 INFO L225 Difference]: With dead ends: 13046 [2022-07-12 07:32:28,617 INFO L226 Difference]: Without dead ends: 10452 [2022-07-12 07:32:28,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-07-12 07:32:28,620 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 2640 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:28,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2640 Valid, 595 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:32:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10452 states. [2022-07-12 07:32:29,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10452 to 2838. [2022-07-12 07:32:29,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 1.4511808248149454) internal successors, (4117), 2837 states have internal predecessors, (4117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 4117 transitions. [2022-07-12 07:32:29,410 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 4117 transitions. Word has length 121 [2022-07-12 07:32:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:29,410 INFO L495 AbstractCegarLoop]: Abstraction has 2838 states and 4117 transitions. [2022-07-12 07:32:29,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:29,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 4117 transitions. [2022-07-12 07:32:29,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 07:32:29,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:29,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:29,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 07:32:29,412 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:29,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:29,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1236418279, now seen corresponding path program 1 times [2022-07-12 07:32:29,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:29,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913650916] [2022-07-12 07:32:29,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:29,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:29,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:29,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913650916] [2022-07-12 07:32:29,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913650916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:29,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:29,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:32:29,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079574722] [2022-07-12 07:32:29,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:29,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:32:29,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:29,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:32:29,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:32:29,550 INFO L87 Difference]: Start difference. First operand 2838 states and 4117 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:31,848 INFO L93 Difference]: Finished difference Result 8325 states and 12123 transitions. [2022-07-12 07:32:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:32:31,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-07-12 07:32:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:31,854 INFO L225 Difference]: With dead ends: 8325 [2022-07-12 07:32:31,854 INFO L226 Difference]: Without dead ends: 5618 [2022-07-12 07:32:31,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:32:31,857 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1143 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:31,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 752 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:32:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2022-07-12 07:32:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 2838. [2022-07-12 07:32:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 1.450475854776172) internal successors, (4115), 2837 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 4115 transitions. [2022-07-12 07:32:32,706 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 4115 transitions. Word has length 121 [2022-07-12 07:32:32,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:32,706 INFO L495 AbstractCegarLoop]: Abstraction has 2838 states and 4115 transitions. [2022-07-12 07:32:32,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:32,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 4115 transitions. [2022-07-12 07:32:32,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 07:32:32,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:32,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:32,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 07:32:32,708 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash 244358814, now seen corresponding path program 1 times [2022-07-12 07:32:32,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:32,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025397246] [2022-07-12 07:32:32,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:32,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:32,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:32,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025397246] [2022-07-12 07:32:32,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025397246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:32,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:32,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:32:32,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207863063] [2022-07-12 07:32:32,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:32,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:32:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:32,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:32:32,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:32:32,865 INFO L87 Difference]: Start difference. First operand 2838 states and 4115 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:35,144 INFO L93 Difference]: Finished difference Result 8180 states and 11903 transitions. [2022-07-12 07:32:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:32:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-07-12 07:32:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:35,151 INFO L225 Difference]: With dead ends: 8180 [2022-07-12 07:32:35,152 INFO L226 Difference]: Without dead ends: 5558 [2022-07-12 07:32:35,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:32:35,155 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 1455 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:35,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 580 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:32:35,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2022-07-12 07:32:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 2838. [2022-07-12 07:32:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 1.4480084596404652) internal successors, (4108), 2837 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 4108 transitions. [2022-07-12 07:32:36,099 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 4108 transitions. Word has length 122 [2022-07-12 07:32:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:36,099 INFO L495 AbstractCegarLoop]: Abstraction has 2838 states and 4108 transitions. [2022-07-12 07:32:36,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 4108 transitions. [2022-07-12 07:32:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 07:32:36,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:36,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:36,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 07:32:36,116 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:36,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1018741221, now seen corresponding path program 1 times [2022-07-12 07:32:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:36,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664235336] [2022-07-12 07:32:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:36,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:36,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:36,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664235336] [2022-07-12 07:32:36,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664235336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:36,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:36,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:32:36,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180445194] [2022-07-12 07:32:36,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:36,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:32:36,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:36,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:32:36,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:32:36,276 INFO L87 Difference]: Start difference. First operand 2838 states and 4108 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:38,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:38,692 INFO L93 Difference]: Finished difference Result 8280 states and 12034 transitions. [2022-07-12 07:32:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:32:38,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2022-07-12 07:32:38,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:38,698 INFO L225 Difference]: With dead ends: 8280 [2022-07-12 07:32:38,698 INFO L226 Difference]: Without dead ends: 5603 [2022-07-12 07:32:38,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:32:38,700 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1824 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:38,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 586 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:32:38,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5603 states. [2022-07-12 07:32:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5603 to 2838. [2022-07-12 07:32:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 1.446246034543532) internal successors, (4103), 2837 states have internal predecessors, (4103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 4103 transitions. [2022-07-12 07:32:39,654 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 4103 transitions. Word has length 123 [2022-07-12 07:32:39,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:39,654 INFO L495 AbstractCegarLoop]: Abstraction has 2838 states and 4103 transitions. [2022-07-12 07:32:39,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 4103 transitions. [2022-07-12 07:32:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:32:39,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:39,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:39,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 07:32:39,656 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:39,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1094727144, now seen corresponding path program 1 times [2022-07-12 07:32:39,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:39,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638843402] [2022-07-12 07:32:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:39,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:39,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:39,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638843402] [2022-07-12 07:32:39,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638843402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:39,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:39,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:32:39,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674002499] [2022-07-12 07:32:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:39,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:32:39,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:39,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:32:39,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:32:39,997 INFO L87 Difference]: Start difference. First operand 2838 states and 4103 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:45,111 INFO L93 Difference]: Finished difference Result 11522 states and 16797 transitions. [2022-07-12 07:32:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:32:45,112 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:32:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:45,122 INFO L225 Difference]: With dead ends: 11522 [2022-07-12 07:32:45,123 INFO L226 Difference]: Without dead ends: 10872 [2022-07-12 07:32:45,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-12 07:32:45,125 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1417 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:45,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 3601 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:32:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10872 states. [2022-07-12 07:32:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10872 to 2819. [2022-07-12 07:32:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2818 states have (on average 1.4453513129879347) internal successors, (4073), 2818 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:46,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4073 transitions. [2022-07-12 07:32:46,327 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4073 transitions. Word has length 124 [2022-07-12 07:32:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:46,327 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4073 transitions. [2022-07-12 07:32:46,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:32:46,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4073 transitions. [2022-07-12 07:32:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:32:46,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:46,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:32:46,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 07:32:46,328 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:46,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:46,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1606632569, now seen corresponding path program 1 times [2022-07-12 07:32:46,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:46,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268197895] [2022-07-12 07:32:46,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:46,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:48,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:48,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268197895] [2022-07-12 07:32:48,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268197895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:48,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:48,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2022-07-12 07:32:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685043703] [2022-07-12 07:32:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-12 07:32:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:48,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-12 07:32:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1784, Unknown=0, NotChecked=0, Total=1892 [2022-07-12 07:32:48,250 INFO L87 Difference]: Start difference. First operand 2819 states and 4073 transitions. Second operand has 44 states, 44 states have (on average 2.8181818181818183) internal successors, (124), 44 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:33:16,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:33:16,103 INFO L93 Difference]: Finished difference Result 25517 states and 37198 transitions. [2022-07-12 07:33:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-12 07:33:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.8181818181818183) internal successors, (124), 44 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:33:16,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:33:16,133 INFO L225 Difference]: With dead ends: 25517 [2022-07-12 07:33:16,133 INFO L226 Difference]: Without dead ends: 24905 [2022-07-12 07:33:16,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1095, Invalid=7095, Unknown=0, NotChecked=0, Total=8190 [2022-07-12 07:33:16,140 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 2566 mSDsluCounter, 30005 mSDsCounter, 0 mSdLazyCounter, 19967 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2566 SdHoareTripleChecker+Valid, 31122 SdHoareTripleChecker+Invalid, 20048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 19967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:33:16,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2566 Valid, 31122 Invalid, 20048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 19967 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-07-12 07:33:16,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24905 states. [2022-07-12 07:33:17,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24905 to 2858. [2022-07-12 07:33:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2857 states have (on average 1.4431221561078054) internal successors, (4123), 2857 states have internal predecessors, (4123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:33:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 4123 transitions. [2022-07-12 07:33:17,828 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 4123 transitions. Word has length 124 [2022-07-12 07:33:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:33:17,828 INFO L495 AbstractCegarLoop]: Abstraction has 2858 states and 4123 transitions. [2022-07-12 07:33:17,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.8181818181818183) internal successors, (124), 44 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:33:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 4123 transitions. [2022-07-12 07:33:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:33:17,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:33:17,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:33:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 07:33:17,830 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:33:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:33:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash -339532985, now seen corresponding path program 1 times [2022-07-12 07:33:17,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:33:17,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710414449] [2022-07-12 07:33:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:33:17,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:33:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:33:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:33:17,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:33:17,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710414449] [2022-07-12 07:33:17,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710414449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:33:17,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:33:17,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:33:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723395726] [2022-07-12 07:33:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:33:17,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:33:17,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:33:17,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:33:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:33:17,895 INFO L87 Difference]: Start difference. First operand 2858 states and 4123 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:33:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:33:20,968 INFO L93 Difference]: Finished difference Result 7910 states and 11555 transitions. [2022-07-12 07:33:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:33:20,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:33:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:33:20,975 INFO L225 Difference]: With dead ends: 7910 [2022-07-12 07:33:20,975 INFO L226 Difference]: Without dead ends: 5316 [2022-07-12 07:33:20,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:33:20,977 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 128 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:33:20,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 550 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:33:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5316 states. [2022-07-12 07:33:24,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5316 to 5178. [2022-07-12 07:33:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5178 states, 5177 states have (on average 1.4433069345180607) internal successors, (7472), 5177 states have internal predecessors, (7472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:33:24,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5178 states to 5178 states and 7472 transitions. [2022-07-12 07:33:24,282 INFO L78 Accepts]: Start accepts. Automaton has 5178 states and 7472 transitions. Word has length 124 [2022-07-12 07:33:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:33:24,283 INFO L495 AbstractCegarLoop]: Abstraction has 5178 states and 7472 transitions. [2022-07-12 07:33:24,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:33:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5178 states and 7472 transitions. [2022-07-12 07:33:24,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:33:24,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:33:24,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:33:24,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 07:33:24,285 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:33:24,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:33:24,285 INFO L85 PathProgramCache]: Analyzing trace with hash -275755606, now seen corresponding path program 1 times [2022-07-12 07:33:24,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:33:24,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036414232] [2022-07-12 07:33:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:33:24,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:33:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:33:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:33:24,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:33:24,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036414232] [2022-07-12 07:33:24,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036414232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:33:24,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:33:24,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-12 07:33:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404873930] [2022-07-12 07:33:24,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:33:24,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 07:33:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:33:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 07:33:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-12 07:33:24,821 INFO L87 Difference]: Start difference. First operand 5178 states and 7472 transitions. Second operand has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:33:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:33:42,948 INFO L93 Difference]: Finished difference Result 26551 states and 38539 transitions. [2022-07-12 07:33:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 07:33:42,949 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:33:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:33:42,987 INFO L225 Difference]: With dead ends: 26551 [2022-07-12 07:33:42,988 INFO L226 Difference]: Without dead ends: 25393 [2022-07-12 07:33:42,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=969, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 07:33:42,997 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 3236 mSDsluCounter, 3287 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 07:33:42,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3236 Valid, 3612 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 07:33:43,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25393 states. [2022-07-12 07:33:46,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25393 to 5280. [2022-07-12 07:33:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5280 states, 5279 states have (on average 1.440803182420913) internal successors, (7606), 5279 states have internal predecessors, (7606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:33:46,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 7606 transitions. [2022-07-12 07:33:46,614 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 7606 transitions. Word has length 124 [2022-07-12 07:33:46,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:33:46,614 INFO L495 AbstractCegarLoop]: Abstraction has 5280 states and 7606 transitions. [2022-07-12 07:33:46,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.888888888888889) internal successors, (124), 18 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:33:46,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 7606 transitions. [2022-07-12 07:33:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:33:46,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:33:46,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:33:46,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 07:33:46,616 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:33:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:33:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash -176427289, now seen corresponding path program 1 times [2022-07-12 07:33:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:33:46,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528884687] [2022-07-12 07:33:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:33:46,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:33:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:33:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:33:46,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:33:46,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528884687] [2022-07-12 07:33:46,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528884687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:33:46,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:33:46,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 07:33:46,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975111793] [2022-07-12 07:33:46,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:33:46,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 07:33:46,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:33:46,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 07:33:46,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:33:46,976 INFO L87 Difference]: Start difference. First operand 5280 states and 7606 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:34:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:34:10,296 INFO L93 Difference]: Finished difference Result 31456 states and 45665 transitions. [2022-07-12 07:34:10,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 07:34:10,297 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:34:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:34:10,332 INFO L225 Difference]: With dead ends: 31456 [2022-07-12 07:34:10,332 INFO L226 Difference]: Without dead ends: 30238 [2022-07-12 07:34:10,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-12 07:34:10,339 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 1502 mSDsluCounter, 3969 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 4558 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:34:10,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 4558 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:34:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30238 states. [2022-07-12 07:34:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30238 to 5245. [2022-07-12 07:34:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 1.4405034324942791) internal successors, (7554), 5244 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:34:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 7554 transitions. [2022-07-12 07:34:14,444 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 7554 transitions. Word has length 124 [2022-07-12 07:34:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:34:14,445 INFO L495 AbstractCegarLoop]: Abstraction has 5245 states and 7554 transitions. [2022-07-12 07:34:14,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:34:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 7554 transitions. [2022-07-12 07:34:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:34:14,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:34:14,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:34:14,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 07:34:14,446 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:34:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:34:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash 175617129, now seen corresponding path program 1 times [2022-07-12 07:34:14,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:34:14,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794134771] [2022-07-12 07:34:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:34:14,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:34:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:34:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:34:14,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:34:14,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794134771] [2022-07-12 07:34:14,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794134771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:34:14,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:34:14,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:34:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515654333] [2022-07-12 07:34:14,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:34:14,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:34:14,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:34:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:34:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:34:14,817 INFO L87 Difference]: Start difference. First operand 5245 states and 7554 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:34:32,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:34:32,010 INFO L93 Difference]: Finished difference Result 21289 states and 30897 transitions. [2022-07-12 07:34:32,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:34:32,011 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:34:32,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:34:32,032 INFO L225 Difference]: With dead ends: 21289 [2022-07-12 07:34:32,032 INFO L226 Difference]: Without dead ends: 20046 [2022-07-12 07:34:32,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-12 07:34:32,037 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1845 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:34:32,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 3198 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:34:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20046 states. [2022-07-12 07:34:36,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20046 to 5175. [2022-07-12 07:34:36,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 1.4422110552763818) internal successors, (7462), 5174 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:34:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 7462 transitions. [2022-07-12 07:34:36,327 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 7462 transitions. Word has length 124 [2022-07-12 07:34:36,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:34:36,327 INFO L495 AbstractCegarLoop]: Abstraction has 5175 states and 7462 transitions. [2022-07-12 07:34:36,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:34:36,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 7462 transitions. [2022-07-12 07:34:36,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 07:34:36,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:34:36,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:34:36,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 07:34:36,328 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:34:36,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:34:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash -865424790, now seen corresponding path program 1 times [2022-07-12 07:34:36,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:34:36,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882191851] [2022-07-12 07:34:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:34:36,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:34:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:34:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:34:36,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:34:36,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882191851] [2022-07-12 07:34:36,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882191851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:34:36,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:34:36,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 07:34:36,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019971620] [2022-07-12 07:34:36,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:34:36,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:34:36,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:34:36,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:34:36,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:34:36,648 INFO L87 Difference]: Start difference. First operand 5175 states and 7462 transitions. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:35:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:35:03,830 INFO L93 Difference]: Finished difference Result 30909 states and 44953 transitions. [2022-07-12 07:35:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 07:35:03,831 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-07-12 07:35:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:35:03,868 INFO L225 Difference]: With dead ends: 30909 [2022-07-12 07:35:03,868 INFO L226 Difference]: Without dead ends: 29709 [2022-07-12 07:35:03,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-07-12 07:35:03,876 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1923 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:35:03,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 2288 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:35:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29709 states. [2022-07-12 07:35:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29709 to 5139. [2022-07-12 07:35:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 1.4431685480731802) internal successors, (7415), 5138 states have internal predecessors, (7415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:35:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 7415 transitions. [2022-07-12 07:35:08,591 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 7415 transitions. Word has length 124 [2022-07-12 07:35:08,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:35:08,591 INFO L495 AbstractCegarLoop]: Abstraction has 5139 states and 7415 transitions. [2022-07-12 07:35:08,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:35:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 7415 transitions. [2022-07-12 07:35:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 07:35:08,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:35:08,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:35:08,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 07:35:08,593 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:35:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:35:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1950133896, now seen corresponding path program 1 times [2022-07-12 07:35:08,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:35:08,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378127239] [2022-07-12 07:35:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:35:08,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:35:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:35:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:35:08,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:35:08,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378127239] [2022-07-12 07:35:08,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378127239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:35:08,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:35:08,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 07:35:08,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807825909] [2022-07-12 07:35:08,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:35:08,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 07:35:08,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:35:08,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 07:35:08,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:35:08,947 INFO L87 Difference]: Start difference. First operand 5139 states and 7415 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:35:38,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:35:38,904 INFO L93 Difference]: Finished difference Result 30967 states and 45021 transitions. [2022-07-12 07:35:38,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 07:35:38,905 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-07-12 07:35:38,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:35:38,942 INFO L225 Difference]: With dead ends: 30967 [2022-07-12 07:35:38,942 INFO L226 Difference]: Without dead ends: 29769 [2022-07-12 07:35:38,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-12 07:35:38,949 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 1840 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:35:38,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 4283 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:35:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29769 states. [2022-07-12 07:35:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29769 to 5098. [2022-07-12 07:35:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5098 states, 5097 states have (on average 1.4445752403374534) internal successors, (7363), 5097 states have internal predecessors, (7363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:35:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 7363 transitions. [2022-07-12 07:35:44,046 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 7363 transitions. Word has length 125 [2022-07-12 07:35:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:35:44,047 INFO L495 AbstractCegarLoop]: Abstraction has 5098 states and 7363 transitions. [2022-07-12 07:35:44,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:35:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 7363 transitions. [2022-07-12 07:35:44,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 07:35:44,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:35:44,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:35:44,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 07:35:44,048 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:35:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:35:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash 763218784, now seen corresponding path program 1 times [2022-07-12 07:35:44,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:35:44,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218081419] [2022-07-12 07:35:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:35:44,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:35:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:35:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:35:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:35:44,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218081419] [2022-07-12 07:35:44,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218081419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:35:44,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:35:44,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:35:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292982229] [2022-07-12 07:35:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:35:44,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:35:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:35:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:35:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:35:44,121 INFO L87 Difference]: Start difference. First operand 5098 states and 7363 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:35:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:35:51,311 INFO L93 Difference]: Finished difference Result 12100 states and 17570 transitions. [2022-07-12 07:35:51,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 07:35:51,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-07-12 07:35:51,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:35:51,319 INFO L225 Difference]: With dead ends: 12100 [2022-07-12 07:35:51,319 INFO L226 Difference]: Without dead ends: 7186 [2022-07-12 07:35:51,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:35:51,325 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 200 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:35:51,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 674 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:35:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2022-07-12 07:35:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 7184. [2022-07-12 07:35:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 7183 states have (on average 1.4428511763886955) internal successors, (10364), 7183 states have internal predecessors, (10364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:35:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 10364 transitions. [2022-07-12 07:35:58,459 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 10364 transitions. Word has length 125 [2022-07-12 07:35:58,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:35:58,460 INFO L495 AbstractCegarLoop]: Abstraction has 7184 states and 10364 transitions. [2022-07-12 07:35:58,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:35:58,460 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 10364 transitions. [2022-07-12 07:35:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 07:35:58,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:35:58,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:35:58,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 07:35:58,461 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:35:58,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:35:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1083263320, now seen corresponding path program 1 times [2022-07-12 07:35:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:35:58,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758211947] [2022-07-12 07:35:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:35:58,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:35:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:35:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:35:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:35:58,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758211947] [2022-07-12 07:35:58,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758211947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:35:58,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:35:58,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:35:58,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891497051] [2022-07-12 07:35:58,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:35:58,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:35:58,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:35:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:35:58,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:35:58,783 INFO L87 Difference]: Start difference. First operand 7184 states and 10364 transitions. Second operand has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 13 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)