./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.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.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6374c4e2c0297c3123cfdf0954bdc9362f3fda9d9942785abd7924d756030a0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:28:50,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:28:50,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:28:50,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:28:50,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:28:50,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:28:50,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:28:50,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:28:50,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:28:50,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:28:50,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:28:50,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:28:50,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:28:50,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:28:50,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:28:50,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:28:50,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:28:50,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:28:50,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:28:50,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:28:50,179 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:28:50,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:28:50,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:28:50,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:28:50,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:28:50,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:28:50,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:28:50,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:28:50,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:28:50,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:28:50,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:28:50,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:28:50,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:28:50,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:28:50,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:28:50,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:28:50,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:28:50,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:28:50,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:28:50,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:28:50,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:28:50,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:28:50,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:28:50,207 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:28:50,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:28:50,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:28:50,208 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:28:50,208 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:28:50,208 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:28:50,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:28:50,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:28:50,209 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:28:50,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:28:50,209 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:28:50,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:28:50,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:28:50,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:28:50,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:28:50,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:28:50,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:28:50,210 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:28:50,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:28:50,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:28:50,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:28:50,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:28:50,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:28:50,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:28:50,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:28:50,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:28:50,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:28:50,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:28:50,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:28:50,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:28:50,212 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:28:50,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:28:50,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:28:50,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6374c4e2c0297c3123cfdf0954bdc9362f3fda9d9942785abd7924d756030a0 [2022-07-12 07:28:50,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:28:50,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:28:50,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:28:50,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:28:50,398 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:28:50,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-12 07:28:50,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d040ef32/d466a10f6f304ebaa87d5a3373799c34/FLAGc0a55a8fd [2022-07-12 07:28:50,840 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:28:50,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-12 07:28:50,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d040ef32/d466a10f6f304ebaa87d5a3373799c34/FLAGc0a55a8fd [2022-07-12 07:28:50,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d040ef32/d466a10f6f304ebaa87d5a3373799c34 [2022-07-12 07:28:50,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:28:50,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:28:50,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:28:50,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:28:50,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:28:50,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:28:50" (1/1) ... [2022-07-12 07:28:50,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4382ca95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:50, skipping insertion in model container [2022-07-12 07:28:50,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:28:50" (1/1) ... [2022-07-12 07:28:50,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:28:50,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:28:51,136 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.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9092,9105] [2022-07-12 07:28:51,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:28:51,187 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:28:51,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9092,9105] [2022-07-12 07:28:51,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:28:51,366 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:28:51,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51 WrapperNode [2022-07-12 07:28:51,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:28:51,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:28:51,367 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:28:51,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:28:51,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,419 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 729 [2022-07-12 07:28:51,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:28:51,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:28:51,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:28:51,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:28:51,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:28:51,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:28:51,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:28:51,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:28:51,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (1/1) ... [2022-07-12 07:28:51,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:28:51,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:28:51,500 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 07:28:51,516 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 07:28:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:28:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:28:51,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:28:51,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:28:51,625 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:28:51,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:28:52,071 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:28:52,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:28:52,078 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:28:52,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:28:52 BoogieIcfgContainer [2022-07-12 07:28:52,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:28:52,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:28:52,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:28:52,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:28:52,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:28:50" (1/3) ... [2022-07-12 07:28:52,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5be103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:28:52, skipping insertion in model container [2022-07-12 07:28:52,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:28:51" (2/3) ... [2022-07-12 07:28:52,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5be103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:28:52, skipping insertion in model container [2022-07-12 07:28:52,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:28:52" (3/3) ... [2022-07-12 07:28:52,086 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-12 07:28:52,095 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:28:52,096 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:28:52,140 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:28:52,147 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@37fac306, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a6238be [2022-07-12 07:28:52,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:28:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 175 states have (on average 1.76) internal successors, (308), 176 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 07:28:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 07:28:52,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:52,182 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] [2022-07-12 07:28:52,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:52,186 INFO L85 PathProgramCache]: Analyzing trace with hash -822713823, now seen corresponding path program 1 times [2022-07-12 07:28:52,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:52,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072039132] [2022-07-12 07:28:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:52,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:52,569 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 07:28:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:52,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072039132] [2022-07-12 07:28:52,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072039132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:52,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:52,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:28:52,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547128833] [2022-07-12 07:28:52,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:52,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 07:28:52,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 07:28:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:28:52,606 INFO L87 Difference]: Start difference. First operand has 177 states, 175 states have (on average 1.76) internal successors, (308), 176 states have internal predecessors, (308), 0 states have call successors, (0), 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 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 07:28:53,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:53,032 INFO L93 Difference]: Finished difference Result 1131 states and 1831 transitions. [2022-07-12 07:28:53,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 07:28:53,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-07-12 07:28:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:53,052 INFO L225 Difference]: With dead ends: 1131 [2022-07-12 07:28:53,052 INFO L226 Difference]: Without dead ends: 1036 [2022-07-12 07:28:53,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-07-12 07:28:53,058 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 2265 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:53,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 3100 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:28:53,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2022-07-12 07:28:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 269. [2022-07-12 07:28:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.458955223880597) internal successors, (391), 268 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 07:28:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 391 transitions. [2022-07-12 07:28:53,141 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 391 transitions. Word has length 90 [2022-07-12 07:28:53,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:53,141 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 391 transitions. [2022-07-12 07:28:53,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 07:28:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 391 transitions. [2022-07-12 07:28:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 07:28:53,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:53,145 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] [2022-07-12 07:28:53,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:28:53,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:53,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1483332975, now seen corresponding path program 1 times [2022-07-12 07:28:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:53,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915628278] [2022-07-12 07:28:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:53,302 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 07:28:53,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915628278] [2022-07-12 07:28:53,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915628278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:53,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:53,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:28:53,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431856657] [2022-07-12 07:28:53,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:53,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 07:28:53,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 07:28:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:28:53,306 INFO L87 Difference]: Start difference. First operand 269 states and 391 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:53,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:53,511 INFO L93 Difference]: Finished difference Result 1235 states and 1925 transitions. [2022-07-12 07:28:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 07:28:53,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-12 07:28:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:53,522 INFO L225 Difference]: With dead ends: 1235 [2022-07-12 07:28:53,523 INFO L226 Difference]: Without dead ends: 1095 [2022-07-12 07:28:53,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:28:53,525 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1605 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:53,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1854 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-07-12 07:28:53,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 428. [2022-07-12 07:28:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.5105386416861826) internal successors, (645), 427 states have internal predecessors, (645), 0 states have call successors, (0), 0 states 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 07:28:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 645 transitions. [2022-07-12 07:28:53,565 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 645 transitions. Word has length 92 [2022-07-12 07:28:53,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:53,565 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 645 transitions. [2022-07-12 07:28:53,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 645 transitions. [2022-07-12 07:28:53,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 07:28:53,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:53,568 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] [2022-07-12 07:28:53,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:28:53,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:53,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1617802447, now seen corresponding path program 1 times [2022-07-12 07:28:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:53,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803412209] [2022-07-12 07:28:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:53,661 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 07:28:53,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:53,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803412209] [2022-07-12 07:28:53,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803412209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:53,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:53,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:28:53,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559190775] [2022-07-12 07:28:53,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:53,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 07:28:53,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 07:28:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:28:53,664 INFO L87 Difference]: Start difference. First operand 428 states and 645 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:53,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:53,862 INFO L93 Difference]: Finished difference Result 1389 states and 2171 transitions. [2022-07-12 07:28:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 07:28:53,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-12 07:28:53,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:53,867 INFO L225 Difference]: With dead ends: 1389 [2022-07-12 07:28:53,867 INFO L226 Difference]: Without dead ends: 1249 [2022-07-12 07:28:53,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:28:53,874 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1908 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:53,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1908 Valid, 1591 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2022-07-12 07:28:53,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 641. [2022-07-12 07:28:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 1.5390625) internal successors, (985), 640 states have internal predecessors, (985), 0 states have call successors, (0), 0 states 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 07:28:53,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 985 transitions. [2022-07-12 07:28:53,929 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 985 transitions. Word has length 92 [2022-07-12 07:28:53,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:53,930 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 985 transitions. [2022-07-12 07:28:53,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 985 transitions. [2022-07-12 07:28:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 07:28:53,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:53,934 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] [2022-07-12 07:28:53,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:28:53,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:53,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1906062023, now seen corresponding path program 1 times [2022-07-12 07:28:53,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:53,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334468061] [2022-07-12 07:28:53,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:53,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:54,064 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 07:28:54,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:54,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334468061] [2022-07-12 07:28:54,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334468061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:54,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:54,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:28:54,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117811187] [2022-07-12 07:28:54,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:54,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 07:28:54,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:54,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 07:28:54,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:28:54,067 INFO L87 Difference]: Start difference. First operand 641 states and 985 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:54,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:54,282 INFO L93 Difference]: Finished difference Result 1528 states and 2393 transitions. [2022-07-12 07:28:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 07:28:54,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-12 07:28:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:54,287 INFO L225 Difference]: With dead ends: 1528 [2022-07-12 07:28:54,287 INFO L226 Difference]: Without dead ends: 1388 [2022-07-12 07:28:54,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:28:54,296 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 2019 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:54,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 1591 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2022-07-12 07:28:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 780. [2022-07-12 07:28:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 1.5494223363286264) internal successors, (1207), 779 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states 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 07:28:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1207 transitions. [2022-07-12 07:28:54,366 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1207 transitions. Word has length 92 [2022-07-12 07:28:54,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:54,366 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 1207 transitions. [2022-07-12 07:28:54,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:54,366 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1207 transitions. [2022-07-12 07:28:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 07:28:54,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:54,371 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] [2022-07-12 07:28:54,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:28:54,371 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 614894983, now seen corresponding path program 1 times [2022-07-12 07:28:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:54,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882963252] [2022-07-12 07:28:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:28:54,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:54,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882963252] [2022-07-12 07:28:54,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882963252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:54,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:54,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:28:54,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668949817] [2022-07-12 07:28:54,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:54,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:28:54,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:28:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:28:54,432 INFO L87 Difference]: Start difference. First operand 780 states and 1207 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:54,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:54,591 INFO L93 Difference]: Finished difference Result 1968 states and 3097 transitions. [2022-07-12 07:28:54,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:28:54,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-12 07:28:54,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:54,596 INFO L225 Difference]: With dead ends: 1968 [2022-07-12 07:28:54,596 INFO L226 Difference]: Without dead ends: 1345 [2022-07-12 07:28:54,597 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 07:28:54,598 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 99 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:54,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 559 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:28:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2022-07-12 07:28:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1325. [2022-07-12 07:28:54,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.5521148036253776) internal successors, (2055), 1324 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states 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 07:28:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2055 transitions. [2022-07-12 07:28:54,714 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2055 transitions. Word has length 92 [2022-07-12 07:28:54,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:54,715 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 2055 transitions. [2022-07-12 07:28:54,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2055 transitions. [2022-07-12 07:28:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 07:28:54,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:54,718 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] [2022-07-12 07:28:54,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:28:54,719 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:54,720 INFO L85 PathProgramCache]: Analyzing trace with hash 858972646, now seen corresponding path program 1 times [2022-07-12 07:28:54,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:54,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57498477] [2022-07-12 07:28:54,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:54,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:54,773 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 07:28:54,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:54,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57498477] [2022-07-12 07:28:54,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57498477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:54,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:54,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:28:54,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138868163] [2022-07-12 07:28:54,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:54,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:28:54,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:54,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:28:54,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:28:54,775 INFO L87 Difference]: Start difference. First operand 1325 states and 2055 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:54,909 INFO L93 Difference]: Finished difference Result 2495 states and 3900 transitions. [2022-07-12 07:28:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:28:54,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-12 07:28:54,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:54,913 INFO L225 Difference]: With dead ends: 2495 [2022-07-12 07:28:54,913 INFO L226 Difference]: Without dead ends: 1327 [2022-07-12 07:28:54,914 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 07:28:54,915 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 125 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:54,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 541 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:28:54,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2022-07-12 07:28:55,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1325. [2022-07-12 07:28:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1324 states have (on average 1.5483383685800605) internal successors, (2050), 1324 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states 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 07:28:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2050 transitions. [2022-07-12 07:28:55,025 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2050 transitions. Word has length 92 [2022-07-12 07:28:55,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:55,025 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 2050 transitions. [2022-07-12 07:28:55,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:55,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2050 transitions. [2022-07-12 07:28:55,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 07:28:55,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:55,027 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] [2022-07-12 07:28:55,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:28:55,027 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:55,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:55,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1799043301, now seen corresponding path program 1 times [2022-07-12 07:28:55,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:55,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121826387] [2022-07-12 07:28:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:55,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:55,096 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 07:28:55,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:55,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121826387] [2022-07-12 07:28:55,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121826387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:55,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:55,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:28:55,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744375431] [2022-07-12 07:28:55,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:55,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 07:28:55,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:55,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 07:28:55,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:28:55,098 INFO L87 Difference]: Start difference. First operand 1325 states and 2050 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:55,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:55,403 INFO L93 Difference]: Finished difference Result 2943 states and 4594 transitions. [2022-07-12 07:28:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 07:28:55,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-12 07:28:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:55,411 INFO L225 Difference]: With dead ends: 2943 [2022-07-12 07:28:55,411 INFO L226 Difference]: Without dead ends: 2682 [2022-07-12 07:28:55,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:28:55,412 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1557 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:55,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 1901 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-07-12 07:28:55,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1595. [2022-07-12 07:28:55,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.552697616060226) internal successors, (2475), 1594 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states 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 07:28:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2475 transitions. [2022-07-12 07:28:55,546 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2475 transitions. Word has length 92 [2022-07-12 07:28:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:55,546 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2475 transitions. [2022-07-12 07:28:55,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2475 transitions. [2022-07-12 07:28:55,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 07:28:55,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:55,547 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] [2022-07-12 07:28:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:28:55,548 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:55,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1982868957, now seen corresponding path program 1 times [2022-07-12 07:28:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:55,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776770325] [2022-07-12 07:28:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:55,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:55,611 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 07:28:55,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:55,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776770325] [2022-07-12 07:28:55,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776770325] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:55,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:55,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:28:55,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080989812] [2022-07-12 07:28:55,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:55,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 07:28:55,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 07:28:55,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:28:55,613 INFO L87 Difference]: Start difference. First operand 1595 states and 2475 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:55,962 INFO L93 Difference]: Finished difference Result 3213 states and 5019 transitions. [2022-07-12 07:28:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 07:28:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-12 07:28:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:55,971 INFO L225 Difference]: With dead ends: 3213 [2022-07-12 07:28:55,971 INFO L226 Difference]: Without dead ends: 2952 [2022-07-12 07:28:55,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:28:55,974 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1752 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:55,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 2283 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:55,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-07-12 07:28:56,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 1870. [2022-07-12 07:28:56,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.555912252541466) internal successors, (2908), 1869 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states 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 07:28:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2908 transitions. [2022-07-12 07:28:56,150 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2908 transitions. Word has length 92 [2022-07-12 07:28:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:56,150 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 2908 transitions. [2022-07-12 07:28:56,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2908 transitions. [2022-07-12 07:28:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 07:28:56,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:56,151 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] [2022-07-12 07:28:56,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:28:56,152 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:56,152 INFO L85 PathProgramCache]: Analyzing trace with hash -820597111, now seen corresponding path program 1 times [2022-07-12 07:28:56,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:56,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6088974] [2022-07-12 07:28:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:56,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:56,236 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 07:28:56,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:56,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6088974] [2022-07-12 07:28:56,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6088974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:56,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:56,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:28:56,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778284334] [2022-07-12 07:28:56,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:56,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 07:28:56,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:56,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 07:28:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:28:56,238 INFO L87 Difference]: Start difference. First operand 1870 states and 2908 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:56,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:56,658 INFO L93 Difference]: Finished difference Result 3493 states and 5460 transitions. [2022-07-12 07:28:56,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 07:28:56,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-12 07:28:56,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:56,666 INFO L225 Difference]: With dead ends: 3493 [2022-07-12 07:28:56,667 INFO L226 Difference]: Without dead ends: 3232 [2022-07-12 07:28:56,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:28:56,668 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 2004 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:56,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2004 Valid, 1924 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3232 states. [2022-07-12 07:28:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3232 to 2150. [2022-07-12 07:28:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.5583992554676593) internal successors, (3349), 2149 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states 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 07:28:56,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3349 transitions. [2022-07-12 07:28:56,877 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3349 transitions. Word has length 92 [2022-07-12 07:28:56,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:56,877 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3349 transitions. [2022-07-12 07:28:56,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 07:28:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3349 transitions. [2022-07-12 07:28:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 07:28:56,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:56,878 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] [2022-07-12 07:28:56,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:28:56,879 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:56,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2115523499, now seen corresponding path program 1 times [2022-07-12 07:28:56,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:56,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869443316] [2022-07-12 07:28:56,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:56,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:56,923 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 07:28:56,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:56,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869443316] [2022-07-12 07:28:56,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869443316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:56,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:56,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:28:56,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052747814] [2022-07-12 07:28:56,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:56,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:28:56,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:56,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:28:56,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:28:56,925 INFO L87 Difference]: Start difference. First operand 2150 states and 3349 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 07:28:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:57,221 INFO L93 Difference]: Finished difference Result 4250 states and 6646 transitions. [2022-07-12 07:28:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:28:57,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-07-12 07:28:57,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:57,227 INFO L225 Difference]: With dead ends: 4250 [2022-07-12 07:28:57,227 INFO L226 Difference]: Without dead ends: 2150 [2022-07-12 07:28:57,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:28:57,230 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 645 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:57,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 140 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-07-12 07:28:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2150. [2022-07-12 07:28:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.5439739413680782) internal successors, (3318), 2149 states have internal predecessors, (3318), 0 states have call successors, (0), 0 states 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 07:28:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3318 transitions. [2022-07-12 07:28:57,483 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3318 transitions. Word has length 93 [2022-07-12 07:28:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:57,483 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3318 transitions. [2022-07-12 07:28:57,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 07:28:57,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3318 transitions. [2022-07-12 07:28:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 07:28:57,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:57,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:28:57,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:28:57,485 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1622736142, now seen corresponding path program 1 times [2022-07-12 07:28:57,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:57,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608229288] [2022-07-12 07:28:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:57,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:57,530 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 07:28:57,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:57,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608229288] [2022-07-12 07:28:57,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608229288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:57,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:57,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:28:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730592013] [2022-07-12 07:28:57,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:57,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:28:57,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:28:57,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:28:57,533 INFO L87 Difference]: Start difference. First operand 2150 states and 3318 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 07:28:57,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:57,887 INFO L93 Difference]: Finished difference Result 4254 states and 6589 transitions. [2022-07-12 07:28:57,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:28:57,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-07-12 07:28:57,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:57,894 INFO L225 Difference]: With dead ends: 4254 [2022-07-12 07:28:57,894 INFO L226 Difference]: Without dead ends: 2150 [2022-07-12 07:28:57,897 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 07:28:57,897 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 650 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:57,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 132 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-07-12 07:28:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2150. [2022-07-12 07:28:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.529548627268497) internal successors, (3287), 2149 states have internal predecessors, (3287), 0 states have call successors, (0), 0 states 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 07:28:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3287 transitions. [2022-07-12 07:28:58,111 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3287 transitions. Word has length 94 [2022-07-12 07:28:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:58,111 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3287 transitions. [2022-07-12 07:28:58,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 07:28:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3287 transitions. [2022-07-12 07:28:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 07:28:58,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:58,113 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] [2022-07-12 07:28:58,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:28:58,113 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:58,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash -514732393, now seen corresponding path program 1 times [2022-07-12 07:28:58,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:58,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091745272] [2022-07-12 07:28:58,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:58,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:58,154 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 07:28:58,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:58,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091745272] [2022-07-12 07:28:58,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091745272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:58,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:58,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:28:58,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907201879] [2022-07-12 07:28:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:58,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:28:58,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:58,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:28:58,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:28:58,156 INFO L87 Difference]: Start difference. First operand 2150 states and 3287 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 07:28:58,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:58,446 INFO L93 Difference]: Finished difference Result 4238 states and 6509 transitions. [2022-07-12 07:28:58,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:28:58,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-07-12 07:28:58,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:58,452 INFO L225 Difference]: With dead ends: 4238 [2022-07-12 07:28:58,452 INFO L226 Difference]: Without dead ends: 2150 [2022-07-12 07:28:58,455 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 07:28:58,455 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 598 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:58,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 164 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-07-12 07:28:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2150. [2022-07-12 07:28:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.5151233131689157) internal successors, (3256), 2149 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states 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 07:28:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3256 transitions. [2022-07-12 07:28:58,676 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3256 transitions. Word has length 95 [2022-07-12 07:28:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:58,676 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3256 transitions. [2022-07-12 07:28:58,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 07:28:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3256 transitions. [2022-07-12 07:28:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 07:28:58,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:58,677 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] [2022-07-12 07:28:58,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:28:58,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:58,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1777645674, now seen corresponding path program 1 times [2022-07-12 07:28:58,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:58,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123003778] [2022-07-12 07:28:58,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:58,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:58,715 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 07:28:58,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:58,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123003778] [2022-07-12 07:28:58,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123003778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:58,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:58,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:28:58,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933916997] [2022-07-12 07:28:58,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:58,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:28:58,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:58,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:28:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:28:58,717 INFO L87 Difference]: Start difference. First operand 2150 states and 3256 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 07:28:59,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:59,021 INFO L93 Difference]: Finished difference Result 4242 states and 6452 transitions. [2022-07-12 07:28:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:28:59,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-07-12 07:28:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:59,026 INFO L225 Difference]: With dead ends: 4242 [2022-07-12 07:28:59,027 INFO L226 Difference]: Without dead ends: 2150 [2022-07-12 07:28:59,028 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 07:28:59,029 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 603 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:59,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 156 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-07-12 07:28:59,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2150. [2022-07-12 07:28:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.5006979990693345) internal successors, (3225), 2149 states have internal predecessors, (3225), 0 states have call successors, (0), 0 states 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 07:28:59,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3225 transitions. [2022-07-12 07:28:59,243 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3225 transitions. Word has length 96 [2022-07-12 07:28:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:59,243 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3225 transitions. [2022-07-12 07:28:59,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 07:28:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3225 transitions. [2022-07-12 07:28:59,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 07:28:59,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:59,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:28:59,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 07:28:59,245 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:59,245 INFO L85 PathProgramCache]: Analyzing trace with hash -341822485, now seen corresponding path program 1 times [2022-07-12 07:28:59,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:59,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39465728] [2022-07-12 07:28:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:59,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:28:59,282 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 07:28:59,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:28:59,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39465728] [2022-07-12 07:28:59,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39465728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:28:59,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:28:59,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:28:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198748281] [2022-07-12 07:28:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:28:59,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:28:59,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:28:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:28:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:28:59,284 INFO L87 Difference]: Start difference. First operand 2150 states and 3225 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 07:28:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:28:59,650 INFO L93 Difference]: Finished difference Result 4246 states and 6395 transitions. [2022-07-12 07:28:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:28:59,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-07-12 07:28:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:28:59,654 INFO L225 Difference]: With dead ends: 4246 [2022-07-12 07:28:59,655 INFO L226 Difference]: Without dead ends: 2150 [2022-07-12 07:28:59,657 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 07:28:59,663 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 608 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:28:59,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 148 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:28:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-07-12 07:28:59,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2150. [2022-07-12 07:28:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.4862726849697534) internal successors, (3194), 2149 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states 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 07:28:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3194 transitions. [2022-07-12 07:28:59,979 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3194 transitions. Word has length 97 [2022-07-12 07:28:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:28:59,979 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3194 transitions. [2022-07-12 07:28:59,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 07:28:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3194 transitions. [2022-07-12 07:28:59,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 07:28:59,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:28:59,980 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] [2022-07-12 07:28:59,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 07:28:59,981 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:28:59,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:28:59,981 INFO L85 PathProgramCache]: Analyzing trace with hash 331898154, now seen corresponding path program 1 times [2022-07-12 07:28:59,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:28:59,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086147767] [2022-07-12 07:28:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:28:59,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:28:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:00,020 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 07:29:00,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:00,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086147767] [2022-07-12 07:29:00,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086147767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:00,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:00,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:29:00,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156791493] [2022-07-12 07:29:00,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:00,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:29:00,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:00,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:29:00,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:29:00,022 INFO L87 Difference]: Start difference. First operand 2150 states and 3194 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 07:29:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:00,335 INFO L93 Difference]: Finished difference Result 4234 states and 6321 transitions. [2022-07-12 07:29:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:29:00,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-12 07:29:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:00,339 INFO L225 Difference]: With dead ends: 4234 [2022-07-12 07:29:00,339 INFO L226 Difference]: Without dead ends: 2150 [2022-07-12 07:29:00,341 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 07:29:00,341 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 566 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:00,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 172 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:29:00,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-07-12 07:29:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2150. [2022-07-12 07:29:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.4718473708701723) internal successors, (3163), 2149 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states 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 07:29:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3163 transitions. [2022-07-12 07:29:00,569 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3163 transitions. Word has length 98 [2022-07-12 07:29:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:00,570 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3163 transitions. [2022-07-12 07:29:00,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states 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 07:29:00,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3163 transitions. [2022-07-12 07:29:00,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 07:29:00,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:00,571 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] [2022-07-12 07:29:00,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 07:29:00,571 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:00,572 INFO L85 PathProgramCache]: Analyzing trace with hash 19008367, now seen corresponding path program 1 times [2022-07-12 07:29:00,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:00,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947749680] [2022-07-12 07:29:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:00,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:00,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:29:00,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:00,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947749680] [2022-07-12 07:29:00,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947749680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:00,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:00,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 07:29:00,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495033269] [2022-07-12 07:29:00,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:00,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:29:00,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:00,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:29:00,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:29:00,786 INFO L87 Difference]: Start difference. First operand 2150 states and 3163 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 07:29:01,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:01,879 INFO L93 Difference]: Finished difference Result 6244 states and 9211 transitions. [2022-07-12 07:29:01,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:29:01,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-07-12 07:29:01,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:01,887 INFO L225 Difference]: With dead ends: 6244 [2022-07-12 07:29:01,887 INFO L226 Difference]: Without dead ends: 4237 [2022-07-12 07:29:01,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-12 07:29:01,890 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1327 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:01,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 614 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:29:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2022-07-12 07:29:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 2150. [2022-07-12 07:29:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.4695207073057235) internal successors, (3158), 2149 states have internal predecessors, (3158), 0 states have call successors, (0), 0 states 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 07:29:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3158 transitions. [2022-07-12 07:29:02,210 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3158 transitions. Word has length 99 [2022-07-12 07:29:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:02,211 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3158 transitions. [2022-07-12 07:29:02,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 07:29:02,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3158 transitions. [2022-07-12 07:29:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 07:29:02,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:02,212 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] [2022-07-12 07:29:02,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 07:29:02,212 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1836312485, now seen corresponding path program 1 times [2022-07-12 07:29:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:02,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670869525] [2022-07-12 07:29:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:02,355 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 07:29:02,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:02,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670869525] [2022-07-12 07:29:02,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670869525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:02,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:02,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:29:02,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288255171] [2022-07-12 07:29:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:02,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 07:29:02,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 07:29:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:29:02,358 INFO L87 Difference]: Start difference. First operand 2150 states and 3158 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 07:29:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:03,356 INFO L93 Difference]: Finished difference Result 6144 states and 9078 transitions. [2022-07-12 07:29:03,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 07:29:03,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-07-12 07:29:03,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:03,363 INFO L225 Difference]: With dead ends: 6144 [2022-07-12 07:29:03,363 INFO L226 Difference]: Without dead ends: 4102 [2022-07-12 07:29:03,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-07-12 07:29:03,365 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1663 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:03,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 392 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:29:03,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2022-07-12 07:29:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 2150. [2022-07-12 07:29:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.4690553745928339) internal successors, (3157), 2149 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states 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 07:29:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3157 transitions. [2022-07-12 07:29:03,708 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3157 transitions. Word has length 100 [2022-07-12 07:29:03,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:03,708 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3157 transitions. [2022-07-12 07:29:03,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 07:29:03,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3157 transitions. [2022-07-12 07:29:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 07:29:03,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:03,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:29:03,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 07:29:03,709 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:03,710 INFO L85 PathProgramCache]: Analyzing trace with hash -332342721, now seen corresponding path program 1 times [2022-07-12 07:29:03,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:03,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895425182] [2022-07-12 07:29:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:03,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:03,872 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 07:29:03,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:03,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895425182] [2022-07-12 07:29:03,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895425182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:03,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:03,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:29:03,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255901724] [2022-07-12 07:29:03,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:03,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:29:03,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:29:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:29:03,874 INFO L87 Difference]: Start difference. First operand 2150 states and 3157 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 07:29:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:05,146 INFO L93 Difference]: Finished difference Result 6289 states and 9269 transitions. [2022-07-12 07:29:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:29:05,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-07-12 07:29:05,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:05,167 INFO L225 Difference]: With dead ends: 6289 [2022-07-12 07:29:05,183 INFO L226 Difference]: Without dead ends: 4252 [2022-07-12 07:29:05,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:29:05,186 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1232 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:05,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 842 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:29:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2022-07-12 07:29:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 2150. [2022-07-12 07:29:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.4681247091670544) internal successors, (3155), 2149 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states 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 07:29:05,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3155 transitions. [2022-07-12 07:29:05,554 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3155 transitions. Word has length 100 [2022-07-12 07:29:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:05,554 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3155 transitions. [2022-07-12 07:29:05,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 07:29:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3155 transitions. [2022-07-12 07:29:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 07:29:05,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:05,555 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] [2022-07-12 07:29:05,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 07:29:05,555 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:05,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash -60484552, now seen corresponding path program 1 times [2022-07-12 07:29:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:05,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576368179] [2022-07-12 07:29:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:05,676 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 07:29:05,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:05,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576368179] [2022-07-12 07:29:05,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576368179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:05,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:05,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:29:05,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461190997] [2022-07-12 07:29:05,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:05,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:29:05,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:05,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:29:05,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:29:05,678 INFO L87 Difference]: Start difference. First operand 2150 states and 3155 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 07:29:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:07,020 INFO L93 Difference]: Finished difference Result 6274 states and 9243 transitions. [2022-07-12 07:29:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:29:07,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-07-12 07:29:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:07,044 INFO L225 Difference]: With dead ends: 6274 [2022-07-12 07:29:07,059 INFO L226 Difference]: Without dead ends: 4247 [2022-07-12 07:29:07,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:29:07,063 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1501 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:07,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 659 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:29:07,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2022-07-12 07:29:07,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 2150. [2022-07-12 07:29:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.4662633783154955) internal successors, (3151), 2149 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states 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 07:29:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3151 transitions. [2022-07-12 07:29:07,568 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3151 transitions. Word has length 101 [2022-07-12 07:29:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:07,568 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3151 transitions. [2022-07-12 07:29:07,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 07:29:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3151 transitions. [2022-07-12 07:29:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 07:29:07,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:07,569 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] [2022-07-12 07:29:07,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 07:29:07,569 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:07,569 INFO L85 PathProgramCache]: Analyzing trace with hash -427226295, now seen corresponding path program 1 times [2022-07-12 07:29:07,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:07,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716812090] [2022-07-12 07:29:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:07,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:07,673 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 07:29:07,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:07,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716812090] [2022-07-12 07:29:07,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716812090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:07,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:07,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:29:07,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118691852] [2022-07-12 07:29:07,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:07,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:29:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:29:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:29:07,676 INFO L87 Difference]: Start difference. First operand 2150 states and 3151 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 07:29:08,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:08,840 INFO L93 Difference]: Finished difference Result 6144 states and 9039 transitions. [2022-07-12 07:29:08,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:29:08,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-07-12 07:29:08,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:08,847 INFO L225 Difference]: With dead ends: 6144 [2022-07-12 07:29:08,847 INFO L226 Difference]: Without dead ends: 4192 [2022-07-12 07:29:08,850 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 07:29:08,852 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1085 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:08,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 468 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:29:08,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2022-07-12 07:29:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 2150. [2022-07-12 07:29:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.4630060493252677) internal successors, (3144), 2149 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states 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 07:29:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3144 transitions. [2022-07-12 07:29:09,327 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3144 transitions. Word has length 102 [2022-07-12 07:29:09,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:09,328 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3144 transitions. [2022-07-12 07:29:09,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 07:29:09,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3144 transitions. [2022-07-12 07:29:09,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 07:29:09,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:09,329 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] [2022-07-12 07:29:09,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 07:29:09,329 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:09,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash -916891525, now seen corresponding path program 1 times [2022-07-12 07:29:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:09,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142679790] [2022-07-12 07:29:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:09,476 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 07:29:09,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:09,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142679790] [2022-07-12 07:29:09,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142679790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:09,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:09,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:29:09,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783242635] [2022-07-12 07:29:09,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:09,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:29:09,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:09,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:29:09,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:29:09,478 INFO L87 Difference]: Start difference. First operand 2150 states and 3144 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 07:29:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:10,946 INFO L93 Difference]: Finished difference Result 6199 states and 9108 transitions. [2022-07-12 07:29:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 07:29:10,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-07-12 07:29:10,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:10,961 INFO L225 Difference]: With dead ends: 6199 [2022-07-12 07:29:10,961 INFO L226 Difference]: Without dead ends: 4217 [2022-07-12 07:29:10,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:29:10,966 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1442 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:10,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 637 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:29:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4217 states. [2022-07-12 07:29:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4217 to 2150. [2022-07-12 07:29:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 1.4602140530479293) internal successors, (3138), 2149 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states 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 07:29:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3138 transitions. [2022-07-12 07:29:11,442 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3138 transitions. Word has length 103 [2022-07-12 07:29:11,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:11,442 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 3138 transitions. [2022-07-12 07:29:11,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 07:29:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3138 transitions. [2022-07-12 07:29:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 07:29:11,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:11,444 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] [2022-07-12 07:29:11,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 07:29:11,445 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1323186080, now seen corresponding path program 1 times [2022-07-12 07:29:11,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:11,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479048696] [2022-07-12 07:29:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:11,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:11,735 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 07:29:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:11,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479048696] [2022-07-12 07:29:11,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479048696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:11,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:11,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 07:29:11,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129173502] [2022-07-12 07:29:11,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:11,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 07:29:11,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:11,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 07:29:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:29:11,737 INFO L87 Difference]: Start difference. First operand 2150 states and 3138 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:16,203 INFO L93 Difference]: Finished difference Result 12640 states and 18659 transitions. [2022-07-12 07:29:16,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 07:29:16,206 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-07-12 07:29:16,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:16,222 INFO L225 Difference]: With dead ends: 12640 [2022-07-12 07:29:16,222 INFO L226 Difference]: Without dead ends: 12078 [2022-07-12 07:29:16,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-12 07:29:16,227 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1559 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 4061 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:16,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 4061 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:29:16,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12078 states. [2022-07-12 07:29:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12078 to 2124. [2022-07-12 07:29:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2123 states have (on average 1.460197833254828) internal successors, (3100), 2123 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states 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 07:29:16,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 3100 transitions. [2022-07-12 07:29:16,970 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 3100 transitions. Word has length 104 [2022-07-12 07:29:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:16,970 INFO L495 AbstractCegarLoop]: Abstraction has 2124 states and 3100 transitions. [2022-07-12 07:29:16,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 3100 transitions. [2022-07-12 07:29:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 07:29:16,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:16,976 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] [2022-07-12 07:29:16,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 07:29:16,976 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:16,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash -977108255, now seen corresponding path program 1 times [2022-07-12 07:29:16,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:16,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108258686] [2022-07-12 07:29:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:16,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:18,361 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 07:29:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:18,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108258686] [2022-07-12 07:29:18,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108258686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:18,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:18,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-07-12 07:29:18,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360485271] [2022-07-12 07:29:18,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:18,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-12 07:29:18,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:18,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-12 07:29:18,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1391, Unknown=0, NotChecked=0, Total=1482 [2022-07-12 07:29:18,363 INFO L87 Difference]: Start difference. First operand 2124 states and 3100 transitions. Second operand has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:33,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:33,355 INFO L93 Difference]: Finished difference Result 17718 states and 26156 transitions. [2022-07-12 07:29:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-12 07:29:33,356 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-07-12 07:29:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:33,375 INFO L225 Difference]: With dead ends: 17718 [2022-07-12 07:29:33,375 INFO L226 Difference]: Without dead ends: 17196 [2022-07-12 07:29:33,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=784, Invalid=4618, Unknown=0, NotChecked=0, Total=5402 [2022-07-12 07:29:33,379 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 2378 mSDsluCounter, 21347 mSDsCounter, 0 mSdLazyCounter, 13695 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 22280 SdHoareTripleChecker+Invalid, 13767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 13695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:33,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 22280 Invalid, 13767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 13695 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-12 07:29:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17196 states. [2022-07-12 07:29:34,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17196 to 2157. [2022-07-12 07:29:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 2156 states have (on average 1.4568645640074211) internal successors, (3141), 2156 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states 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 07:29:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 3141 transitions. [2022-07-12 07:29:34,366 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 3141 transitions. Word has length 104 [2022-07-12 07:29:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:34,367 INFO L495 AbstractCegarLoop]: Abstraction has 2157 states and 3141 transitions. [2022-07-12 07:29:34,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 3141 transitions. [2022-07-12 07:29:34,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 07:29:34,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:34,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:29:34,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 07:29:34,368 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1621509664, now seen corresponding path program 1 times [2022-07-12 07:29:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:34,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864924833] [2022-07-12 07:29:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:34,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:34,680 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 07:29:34,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:34,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864924833] [2022-07-12 07:29:34,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864924833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:34,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:34,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:29:34,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627698964] [2022-07-12 07:29:34,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:34,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:29:34,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:29:34,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:29:34,683 INFO L87 Difference]: Start difference. First operand 2157 states and 3141 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:39,219 INFO L93 Difference]: Finished difference Result 8554 states and 12613 transitions. [2022-07-12 07:29:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:29:39,220 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-07-12 07:29:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:39,230 INFO L225 Difference]: With dead ends: 8554 [2022-07-12 07:29:39,230 INFO L226 Difference]: Without dead ends: 8032 [2022-07-12 07:29:39,232 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 07:29:39,233 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1427 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:39,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 2243 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:29:39,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8032 states. [2022-07-12 07:29:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8032 to 2154. [2022-07-12 07:29:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 2153 states have (on average 1.4547143520668835) internal successors, (3132), 2153 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states 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 07:29:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 3132 transitions. [2022-07-12 07:29:40,278 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 3132 transitions. Word has length 104 [2022-07-12 07:29:40,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:40,279 INFO L495 AbstractCegarLoop]: Abstraction has 2154 states and 3132 transitions. [2022-07-12 07:29:40,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:40,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 3132 transitions. [2022-07-12 07:29:40,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 07:29:40,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:40,280 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] [2022-07-12 07:29:40,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 07:29:40,280 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:40,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1886035071, now seen corresponding path program 1 times [2022-07-12 07:29:40,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:40,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818460025] [2022-07-12 07:29:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:40,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:40,513 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 07:29:40,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:40,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818460025] [2022-07-12 07:29:40,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818460025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:40,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:40,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 07:29:40,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704878967] [2022-07-12 07:29:40,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:40,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:29:40,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:40,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:29:40,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:29:40,514 INFO L87 Difference]: Start difference. First operand 2154 states and 3132 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:45,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:45,509 INFO L93 Difference]: Finished difference Result 8710 states and 12811 transitions. [2022-07-12 07:29:45,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:29:45,510 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-07-12 07:29:45,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:45,520 INFO L225 Difference]: With dead ends: 8710 [2022-07-12 07:29:45,520 INFO L226 Difference]: Without dead ends: 8158 [2022-07-12 07:29:45,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-07-12 07:29:45,524 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1247 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 3166 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:45,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 3166 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:29:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8158 states. [2022-07-12 07:29:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8158 to 2133. [2022-07-12 07:29:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2133 states, 2132 states have (on average 1.4549718574108819) internal successors, (3102), 2132 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states 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 07:29:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 3102 transitions. [2022-07-12 07:29:46,682 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 3102 transitions. Word has length 104 [2022-07-12 07:29:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:46,682 INFO L495 AbstractCegarLoop]: Abstraction has 2133 states and 3102 transitions. [2022-07-12 07:29:46,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 3102 transitions. [2022-07-12 07:29:46,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 07:29:46,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:46,683 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] [2022-07-12 07:29:46,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 07:29:46,683 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:46,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash -189921857, now seen corresponding path program 1 times [2022-07-12 07:29:46,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:46,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462419153] [2022-07-12 07:29:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:46,894 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 07:29:46,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:46,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462419153] [2022-07-12 07:29:46,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462419153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:46,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:46,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 07:29:46,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738566982] [2022-07-12 07:29:46,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:46,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 07:29:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:46,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 07:29:46,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 07:29:46,895 INFO L87 Difference]: Start difference. First operand 2133 states and 3102 transitions. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:54,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:29:54,914 INFO L93 Difference]: Finished difference Result 12437 states and 18359 transitions. [2022-07-12 07:29:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 07:29:54,915 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-07-12 07:29:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:29:54,927 INFO L225 Difference]: With dead ends: 12437 [2022-07-12 07:29:54,928 INFO L226 Difference]: Without dead ends: 11880 [2022-07-12 07:29:54,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-07-12 07:29:54,930 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1461 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 2367 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:29:54,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 2367 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:29:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11880 states. [2022-07-12 07:29:56,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11880 to 2102. [2022-07-12 07:29:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2101 states have (on average 1.4569252736792004) internal successors, (3061), 2101 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states 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 07:29:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3061 transitions. [2022-07-12 07:29:56,366 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3061 transitions. Word has length 104 [2022-07-12 07:29:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:29:56,368 INFO L495 AbstractCegarLoop]: Abstraction has 2102 states and 3061 transitions. [2022-07-12 07:29:56,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 07:29:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3061 transitions. [2022-07-12 07:29:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 07:29:56,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:29:56,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:29:56,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 07:29:56,369 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:29:56,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:29:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1844155757, now seen corresponding path program 1 times [2022-07-12 07:29:56,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:29:56,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333699822] [2022-07-12 07:29:56,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:29:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:29:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:29:56,656 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 07:29:56,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:29:56,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333699822] [2022-07-12 07:29:56,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333699822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:29:56,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:29:56,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 07:29:56,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065607431] [2022-07-12 07:29:56,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:29:56,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 07:29:56,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:29:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 07:29:56,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:29:56,657 INFO L87 Difference]: Start difference. First operand 2102 states and 3061 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 07:30:06,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:30:06,054 INFO L93 Difference]: Finished difference Result 12376 states and 18282 transitions. [2022-07-12 07:30:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 07:30:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-07-12 07:30:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:30:06,067 INFO L225 Difference]: With dead ends: 12376 [2022-07-12 07:30:06,067 INFO L226 Difference]: Without dead ends: 11836 [2022-07-12 07:30:06,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-07-12 07:30:06,069 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 2217 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:30:06,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 2388 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:30:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11836 states. [2022-07-12 07:30:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11836 to 2059. [2022-07-12 07:30:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 2058 states have (on average 1.4606413994169096) internal successors, (3006), 2058 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states 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 07:30:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 3006 transitions. [2022-07-12 07:30:07,606 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 3006 transitions. Word has length 105 [2022-07-12 07:30:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:30:07,606 INFO L495 AbstractCegarLoop]: Abstraction has 2059 states and 3006 transitions. [2022-07-12 07:30:07,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 07:30:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 3006 transitions. [2022-07-12 07:30:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 07:30:07,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:30:07,607 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] [2022-07-12 07:30:07,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 07:30:07,608 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:30:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:30:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -556328017, now seen corresponding path program 1 times [2022-07-12 07:30:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:30:07,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020558824] [2022-07-12 07:30:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:30:07,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:30:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:30:08,786 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 07:30:08,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:30:08,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020558824] [2022-07-12 07:30:08,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020558824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:30:08,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:30:08,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-12 07:30:08,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214893528] [2022-07-12 07:30:08,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:30:08,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-12 07:30:08,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:30:08,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-12 07:30:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 07:30:08,788 INFO L87 Difference]: Start difference. First operand 2059 states and 3006 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 07:30:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:30:30,432 INFO L93 Difference]: Finished difference Result 19754 states and 29181 transitions. [2022-07-12 07:30:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-12 07:30:30,433 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-07-12 07:30:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:30:30,452 INFO L225 Difference]: With dead ends: 19754 [2022-07-12 07:30:30,452 INFO L226 Difference]: Without dead ends: 17807 [2022-07-12 07:30:30,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=760, Invalid=4070, Unknown=0, NotChecked=0, Total=4830 [2022-07-12 07:30:30,457 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 2414 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 11342 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 18150 SdHoareTripleChecker+Invalid, 11435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 11342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-12 07:30:30,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2414 Valid, 18150 Invalid, 11435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 11342 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-12 07:30:30,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17807 states. [2022-07-12 07:30:32,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17807 to 2088. [2022-07-12 07:30:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 2087 states have (on average 1.457115476760901) internal successors, (3041), 2087 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states 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 07:30:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3041 transitions. [2022-07-12 07:30:32,098 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3041 transitions. Word has length 105 [2022-07-12 07:30:32,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:30:32,099 INFO L495 AbstractCegarLoop]: Abstraction has 2088 states and 3041 transitions. [2022-07-12 07:30:32,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 07:30:32,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3041 transitions. [2022-07-12 07:30:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 07:30:32,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:30:32,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:30:32,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 07:30:32,100 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:30:32,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:30:32,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1003510435, now seen corresponding path program 1 times [2022-07-12 07:30:32,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:30:32,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755837267] [2022-07-12 07:30:32,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:30:32,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:30:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:30:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:30:32,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:30:32,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755837267] [2022-07-12 07:30:32,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755837267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:30:32,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:30:32,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 07:30:32,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369793015] [2022-07-12 07:30:32,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:30:32,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 07:30:32,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:30:32,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 07:30:32,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-12 07:30:32,394 INFO L87 Difference]: Start difference. First operand 2088 states and 3041 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:30:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:30:43,333 INFO L93 Difference]: Finished difference Result 12371 states and 18273 transitions. [2022-07-12 07:30:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 07:30:43,334 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-12 07:30:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:30:43,345 INFO L225 Difference]: With dead ends: 12371 [2022-07-12 07:30:43,345 INFO L226 Difference]: Without dead ends: 11832 [2022-07-12 07:30:43,347 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 07:30:43,347 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1491 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 07:30:43,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 4004 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 07:30:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11832 states. [2022-07-12 07:30:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11832 to 2068. [2022-07-12 07:30:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2067 states have (on average 1.4591194968553458) internal successors, (3016), 2067 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states 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 07:30:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 3016 transitions. [2022-07-12 07:30:45,134 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 3016 transitions. Word has length 106 [2022-07-12 07:30:45,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:30:45,134 INFO L495 AbstractCegarLoop]: Abstraction has 2068 states and 3016 transitions. [2022-07-12 07:30:45,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:30:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 3016 transitions. [2022-07-12 07:30:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 07:30:45,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:30:45,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:45,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 07:30:45,135 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:30:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:30:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash -118533378, now seen corresponding path program 1 times [2022-07-12 07:30:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:30:45,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126474972] [2022-07-12 07:30:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:30:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:30:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:30:45,257 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 07:30:45,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:30:45,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126474972] [2022-07-12 07:30:45,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126474972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:30:45,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:30:45,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:30:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005122328] [2022-07-12 07:30:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:30:45,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:30:45,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:30:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:30:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:30:45,259 INFO L87 Difference]: Start difference. First operand 2068 states and 3016 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:30:47,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:30:47,735 INFO L93 Difference]: Finished difference Result 4841 states and 7130 transitions. [2022-07-12 07:30:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:30:47,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-12 07:30:47,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:30:47,739 INFO L225 Difference]: With dead ends: 4841 [2022-07-12 07:30:47,739 INFO L226 Difference]: Without dead ends: 2896 [2022-07-12 07:30:47,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:30:47,742 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 103 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:30:47,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 512 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:30:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2022-07-12 07:30:50,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2881. [2022-07-12 07:30:50,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2880 states have (on average 1.4583333333333333) internal successors, (4200), 2880 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 07:30:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 4200 transitions. [2022-07-12 07:30:50,188 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 4200 transitions. Word has length 106 [2022-07-12 07:30:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:30:50,188 INFO L495 AbstractCegarLoop]: Abstraction has 2881 states and 4200 transitions. [2022-07-12 07:30:50,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:30:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 4200 transitions. [2022-07-12 07:30:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 07:30:50,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:30:50,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:30:50,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 07:30:50,189 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:30:50,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:30:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1377617854, now seen corresponding path program 1 times [2022-07-12 07:30:50,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:30:50,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354825873] [2022-07-12 07:30:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:30:50,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:30:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:30:50,229 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 07:30:50,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:30:50,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354825873] [2022-07-12 07:30:50,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354825873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:30:50,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:30:50,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:30:50,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636940561] [2022-07-12 07:30:50,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:30:50,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:30:50,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:30:50,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:30:50,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:30:50,231 INFO L87 Difference]: Start difference. First operand 2881 states and 4200 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:30:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:30:54,171 INFO L93 Difference]: Finished difference Result 4472 states and 6537 transitions. [2022-07-12 07:30:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:30:54,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-12 07:30:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:30:54,176 INFO L225 Difference]: With dead ends: 4472 [2022-07-12 07:30:54,176 INFO L226 Difference]: Without dead ends: 4470 [2022-07-12 07:30:54,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:30:54,177 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 198 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:30:54,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 857 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:30:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2022-07-12 07:30:56,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 2895. [2022-07-12 07:30:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2895 states, 2894 states have (on average 1.450932964754665) internal successors, (4199), 2894 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states 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 07:30:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4199 transitions. [2022-07-12 07:30:56,686 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4199 transitions. Word has length 106 [2022-07-12 07:30:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:30:56,687 INFO L495 AbstractCegarLoop]: Abstraction has 2895 states and 4199 transitions. [2022-07-12 07:30:56,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:30:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4199 transitions. [2022-07-12 07:30:56,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 07:30:56,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:30:56,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:30:56,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 07:30:56,689 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:30:56,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:30:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1296554994, now seen corresponding path program 1 times [2022-07-12 07:30:56,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:30:56,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586570697] [2022-07-12 07:30:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:30:56,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:30:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:30:56,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:30:56,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:30:56,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586570697] [2022-07-12 07:30:56,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586570697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:30:56,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:30:56,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:30:56,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853642936] [2022-07-12 07:30:56,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:30:56,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:30:56,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:30:56,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:30:56,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:30:56,782 INFO L87 Difference]: Start difference. First operand 2895 states and 4199 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 07:31:06,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:06,538 INFO L93 Difference]: Finished difference Result 13153 states and 19255 transitions. [2022-07-12 07:31:06,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:31:06,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-07-12 07:31:06,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:06,549 INFO L225 Difference]: With dead ends: 13153 [2022-07-12 07:31:06,550 INFO L226 Difference]: Without dead ends: 10381 [2022-07-12 07:31:06,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:31:06,554 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 1446 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:06,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1446 Valid, 556 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:31:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10381 states. [2022-07-12 07:31:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10381 to 4300. [2022-07-12 07:31:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4300 states, 4299 states have (on average 1.4545243079785997) internal successors, (6253), 4299 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states 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 07:31:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4300 states to 4300 states and 6253 transitions. [2022-07-12 07:31:10,331 INFO L78 Accepts]: Start accepts. Automaton has 4300 states and 6253 transitions. Word has length 138 [2022-07-12 07:31:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:10,332 INFO L495 AbstractCegarLoop]: Abstraction has 4300 states and 6253 transitions. [2022-07-12 07:31:10,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 07:31:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4300 states and 6253 transitions. [2022-07-12 07:31:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 07:31:10,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:10,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:10,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 07:31:10,334 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:10,334 INFO L85 PathProgramCache]: Analyzing trace with hash -37578469, now seen corresponding path program 1 times [2022-07-12 07:31:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:10,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373066798] [2022-07-12 07:31:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:10,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:10,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:10,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373066798] [2022-07-12 07:31:10,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373066798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:10,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:10,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:31:10,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889704676] [2022-07-12 07:31:10,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:10,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:31:10,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:31:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:31:10,448 INFO L87 Difference]: Start difference. First operand 4300 states and 6253 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 07:31:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:31:27,551 INFO L93 Difference]: Finished difference Result 22444 states and 32733 transitions. [2022-07-12 07:31:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:31:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-07-12 07:31:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:31:27,574 INFO L225 Difference]: With dead ends: 22444 [2022-07-12 07:31:27,574 INFO L226 Difference]: Without dead ends: 18285 [2022-07-12 07:31:27,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:31:27,581 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 1664 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1664 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:31:27,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1664 Valid, 446 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:31:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18285 states. [2022-07-12 07:31:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18285 to 9037. [2022-07-12 07:31:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9037 states, 9036 states have (on average 1.4566179725542274) internal successors, (13162), 9036 states have internal predecessors, (13162), 0 states have call successors, (0), 0 states 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 07:31:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9037 states to 9037 states and 13162 transitions. [2022-07-12 07:31:35,578 INFO L78 Accepts]: Start accepts. Automaton has 9037 states and 13162 transitions. Word has length 138 [2022-07-12 07:31:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:31:35,578 INFO L495 AbstractCegarLoop]: Abstraction has 9037 states and 13162 transitions. [2022-07-12 07:31:35,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 07:31:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9037 states and 13162 transitions. [2022-07-12 07:31:35,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 07:31:35,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:31:35,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:31:35,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 07:31:35,581 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:31:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:31:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash 471189665, now seen corresponding path program 1 times [2022-07-12 07:31:35,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:31:35,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432230103] [2022-07-12 07:31:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:31:35,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:31:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:31:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:31:35,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:31:35,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432230103] [2022-07-12 07:31:35,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432230103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:31:35,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:31:35,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:31:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250552646] [2022-07-12 07:31:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:31:35,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:31:35,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:31:35,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:31:35,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:31:35,631 INFO L87 Difference]: Start difference. First operand 9037 states and 13162 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 07:32:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:32:08,897 INFO L93 Difference]: Finished difference Result 45317 states and 65886 transitions. [2022-07-12 07:32:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 07:32:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-07-12 07:32:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:32:08,949 INFO L225 Difference]: With dead ends: 45317 [2022-07-12 07:32:08,949 INFO L226 Difference]: Without dead ends: 36421 [2022-07-12 07:32:08,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-12 07:32:08,964 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1497 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:32:08,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 450 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:32:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36421 states. [2022-07-12 07:32:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36421 to 19091. [2022-07-12 07:32:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19091 states, 19090 states have (on average 1.4558407543216343) internal successors, (27792), 19090 states have internal predecessors, (27792), 0 states have call successors, (0), 0 states 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 07:32:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19091 states to 19091 states and 27792 transitions. [2022-07-12 07:32:25,580 INFO L78 Accepts]: Start accepts. Automaton has 19091 states and 27792 transitions. Word has length 138 [2022-07-12 07:32:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:32:25,580 INFO L495 AbstractCegarLoop]: Abstraction has 19091 states and 27792 transitions. [2022-07-12 07:32:25,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 07:32:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 19091 states and 27792 transitions. [2022-07-12 07:32:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 07:32:25,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:32:25,596 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:32:25,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 07:32:25,597 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:32:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:32:25,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1142509291, now seen corresponding path program 1 times [2022-07-12 07:32:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:32:25,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376609436] [2022-07-12 07:32:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:32:25,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:32:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:32:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:32:25,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:32:25,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376609436] [2022-07-12 07:32:25,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376609436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:32:25,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:32:25,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:32:25,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441481405] [2022-07-12 07:32:25,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:32:25,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 07:32:25,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:32:25,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 07:32:25,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:32:25,673 INFO L87 Difference]: Start difference. First operand 19091 states and 27792 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)