./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4008c7bad6e9f0faf3cf745d811b7950453991ed3720a7122a910bf51077877c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:14:46,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:14:46,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:14:46,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:14:46,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:14:46,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:14:46,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:14:46,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:14:46,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:14:46,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:14:46,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:14:46,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:14:46,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:14:46,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:14:46,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:14:46,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:14:46,320 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:14:46,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:14:46,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:14:46,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:14:46,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:14:46,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:14:46,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:14:46,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:14:46,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:14:46,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:14:46,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:14:46,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:14:46,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:14:46,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:14:46,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:14:46,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:14:46,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:14:46,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:14:46,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:14:46,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:14:46,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:14:46,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:14:46,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:14:46,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:14:46,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:14:46,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:14:46,383 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:14:46,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:14:46,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:14:46,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:14:46,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:14:46,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:14:46,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:14:46,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:14:46,392 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:14:46,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:14:46,394 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:14:46,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:14:46,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:14:46,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:14:46,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:14:46,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:14:46,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:14:46,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:14:46,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:14:46,396 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:14:46,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:14:46,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:14:46,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:14:46,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:14:46,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:14:46,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:14:46,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:14:46,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:14:46,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:14:46,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:14:46,399 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:14:46,399 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:14:46,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:14:46,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:14:46,400 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4008c7bad6e9f0faf3cf745d811b7950453991ed3720a7122a910bf51077877c [2021-12-22 12:14:46,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:14:46,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:14:46,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:14:46,656 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:14:46,656 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:14:46,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2021-12-22 12:14:46,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879ecab3c/10760780d75f46669040240ca1800115/FLAG78142be23 [2021-12-22 12:14:47,141 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:14:47,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2021-12-22 12:14:47,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879ecab3c/10760780d75f46669040240ca1800115/FLAG78142be23 [2021-12-22 12:14:47,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879ecab3c/10760780d75f46669040240ca1800115 [2021-12-22 12:14:47,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:14:47,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:14:47,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:14:47,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:14:47,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:14:47,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4bc952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47, skipping insertion in model container [2021-12-22 12:14:47,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:14:47,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:14:47,470 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10525,10538] [2021-12-22 12:14:47,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:14:47,572 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:14:47,649 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10525,10538] [2021-12-22 12:14:47,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:14:47,697 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:14:47,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47 WrapperNode [2021-12-22 12:14:47,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:14:47,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:14:47,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:14:47,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:14:47,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,755 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 841 [2021-12-22 12:14:47,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:14:47,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:14:47,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:14:47,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:14:47,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:14:47,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:14:47,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:14:47,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:14:47,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (1/1) ... [2021-12-22 12:14:47,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:14:47,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:14:47,859 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) [2021-12-22 12:14:47,860 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 [2021-12-22 12:14:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:14:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:14:47,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:14:47,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:14:48,021 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:14:48,023 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:14:48,606 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:14:48,616 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:14:48,617 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 12:14:48,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:14:48 BoogieIcfgContainer [2021-12-22 12:14:48,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:14:48,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:14:48,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:14:48,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:14:48,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:14:47" (1/3) ... [2021-12-22 12:14:48,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126f28ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:14:48, skipping insertion in model container [2021-12-22 12:14:48,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:47" (2/3) ... [2021-12-22 12:14:48,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126f28ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:14:48, skipping insertion in model container [2021-12-22 12:14:48,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:14:48" (3/3) ... [2021-12-22 12:14:48,627 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2021-12-22 12:14:48,636 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:14:48,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 12:14:48,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:14:48,700 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:14:48,701 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 12:14:48,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 200 states have (on average 1.765) internal successors, (353), 201 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 12:14:48,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:48,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:48,732 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2055920229, now seen corresponding path program 1 times [2021-12-22 12:14:48,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:48,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193603754] [2021-12-22 12:14:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:48,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:49,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:49,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193603754] [2021-12-22 12:14:49,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193603754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:49,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:49,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:14:49,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980837948] [2021-12-22 12:14:49,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:49,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:49,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:49,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:49,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:49,285 INFO L87 Difference]: Start difference. First operand has 202 states, 200 states have (on average 1.765) internal successors, (353), 201 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:50,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:50,081 INFO L93 Difference]: Finished difference Result 1459 states and 2342 transitions. [2021-12-22 12:14:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:14:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-22 12:14:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:50,108 INFO L225 Difference]: With dead ends: 1459 [2021-12-22 12:14:50,108 INFO L226 Difference]: Without dead ends: 1333 [2021-12-22 12:14:50,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-22 12:14:50,126 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 2676 mSDsluCounter, 6172 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 7040 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:50,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2676 Valid, 7040 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:14:50,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2021-12-22 12:14:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 304. [2021-12-22 12:14:50,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.4422442244224423) internal successors, (437), 303 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 437 transitions. [2021-12-22 12:14:50,228 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 437 transitions. Word has length 108 [2021-12-22 12:14:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:50,229 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 437 transitions. [2021-12-22 12:14:50,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 437 transitions. [2021-12-22 12:14:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 12:14:50,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:50,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:50,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:14:50,238 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:50,240 INFO L85 PathProgramCache]: Analyzing trace with hash -924120728, now seen corresponding path program 1 times [2021-12-22 12:14:50,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:50,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580837637] [2021-12-22 12:14:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:50,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:50,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:50,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580837637] [2021-12-22 12:14:50,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580837637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:50,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:50,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:14:50,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931618206] [2021-12-22 12:14:50,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:50,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:50,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:50,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:50,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:50,466 INFO L87 Difference]: Start difference. First operand 304 states and 437 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:50,947 INFO L93 Difference]: Finished difference Result 1560 states and 2419 transitions. [2021-12-22 12:14:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 12:14:50,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-22 12:14:50,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:50,953 INFO L225 Difference]: With dead ends: 1560 [2021-12-22 12:14:50,953 INFO L226 Difference]: Without dead ends: 1400 [2021-12-22 12:14:50,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:14:50,956 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1946 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:50,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1946 Valid, 4018 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:14:50,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-12-22 12:14:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 483. [2021-12-22 12:14:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.495850622406639) internal successors, (721), 482 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 721 transitions. [2021-12-22 12:14:51,015 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 721 transitions. Word has length 110 [2021-12-22 12:14:51,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:51,016 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 721 transitions. [2021-12-22 12:14:51,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 721 transitions. [2021-12-22 12:14:51,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 12:14:51,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:51,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:51,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:14:51,018 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:51,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1292919580, now seen corresponding path program 1 times [2021-12-22 12:14:51,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:51,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886536455] [2021-12-22 12:14:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:51,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:51,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:51,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886536455] [2021-12-22 12:14:51,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886536455] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:51,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:51,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:14:51,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846609287] [2021-12-22 12:14:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:51,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:51,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:51,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:51,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:51,153 INFO L87 Difference]: Start difference. First operand 483 states and 721 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:51,616 INFO L93 Difference]: Finished difference Result 1739 states and 2703 transitions. [2021-12-22 12:14:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 12:14:51,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-22 12:14:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:51,624 INFO L225 Difference]: With dead ends: 1739 [2021-12-22 12:14:51,624 INFO L226 Difference]: Without dead ends: 1579 [2021-12-22 12:14:51,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:14:51,626 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 1941 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:51,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1941 Valid, 3067 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:14:51,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2021-12-22 12:14:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 741. [2021-12-22 12:14:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.527027027027027) internal successors, (1130), 740 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1130 transitions. [2021-12-22 12:14:51,738 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1130 transitions. Word has length 110 [2021-12-22 12:14:51,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:51,739 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1130 transitions. [2021-12-22 12:14:51,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:51,739 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1130 transitions. [2021-12-22 12:14:51,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 12:14:51,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:51,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:51,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:14:51,741 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:51,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1295133060, now seen corresponding path program 1 times [2021-12-22 12:14:51,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:51,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561157961] [2021-12-22 12:14:51,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:51,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:51,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:51,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561157961] [2021-12-22 12:14:51,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561157961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:51,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:51,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:14:51,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952423263] [2021-12-22 12:14:51,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:51,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:51,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:51,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:51,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:51,881 INFO L87 Difference]: Start difference. First operand 741 states and 1130 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:52,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:52,381 INFO L93 Difference]: Finished difference Result 1913 states and 2979 transitions. [2021-12-22 12:14:52,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 12:14:52,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-22 12:14:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:52,390 INFO L225 Difference]: With dead ends: 1913 [2021-12-22 12:14:52,390 INFO L226 Difference]: Without dead ends: 1753 [2021-12-22 12:14:52,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:14:52,392 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 2145 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:52,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 2916 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:14:52,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-12-22 12:14:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 915. [2021-12-22 12:14:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 914 states have (on average 1.538293216630197) internal successors, (1406), 914 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1406 transitions. [2021-12-22 12:14:52,542 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1406 transitions. Word has length 110 [2021-12-22 12:14:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:52,542 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1406 transitions. [2021-12-22 12:14:52,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:52,543 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1406 transitions. [2021-12-22 12:14:52,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 12:14:52,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:52,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:52,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:14:52,544 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:52,545 INFO L85 PathProgramCache]: Analyzing trace with hash 722932112, now seen corresponding path program 1 times [2021-12-22 12:14:52,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:52,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439160799] [2021-12-22 12:14:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:52,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:52,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:52,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439160799] [2021-12-22 12:14:52,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439160799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:52,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:52,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:14:52,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905552793] [2021-12-22 12:14:52,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:52,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:52,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:52,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:52,649 INFO L87 Difference]: Start difference. First operand 915 states and 1406 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:53,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:53,131 INFO L93 Difference]: Finished difference Result 2082 states and 3247 transitions. [2021-12-22 12:14:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 12:14:53,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-22 12:14:53,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:53,139 INFO L225 Difference]: With dead ends: 2082 [2021-12-22 12:14:53,140 INFO L226 Difference]: Without dead ends: 1922 [2021-12-22 12:14:53,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:14:53,145 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 2347 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:53,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2347 Valid, 2685 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:14:53,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2021-12-22 12:14:53,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1079. [2021-12-22 12:14:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1078 states have (on average 1.5454545454545454) internal successors, (1666), 1078 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1666 transitions. [2021-12-22 12:14:53,290 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1666 transitions. Word has length 110 [2021-12-22 12:14:53,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:53,291 INFO L470 AbstractCegarLoop]: Abstraction has 1079 states and 1666 transitions. [2021-12-22 12:14:53,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1666 transitions. [2021-12-22 12:14:53,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 12:14:53,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:53,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:53,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:14:53,293 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:53,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:53,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1525369156, now seen corresponding path program 1 times [2021-12-22 12:14:53,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:53,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26544189] [2021-12-22 12:14:53,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:53,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:53,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:53,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26544189] [2021-12-22 12:14:53,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26544189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:53,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:53,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:14:53,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549257948] [2021-12-22 12:14:53,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:53,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:53,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:53,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:53,406 INFO L87 Difference]: Start difference. First operand 1079 states and 1666 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:53,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:53,866 INFO L93 Difference]: Finished difference Result 2241 states and 3499 transitions. [2021-12-22 12:14:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 12:14:53,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-22 12:14:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:53,874 INFO L225 Difference]: With dead ends: 2241 [2021-12-22 12:14:53,874 INFO L226 Difference]: Without dead ends: 2081 [2021-12-22 12:14:53,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:14:53,879 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 2850 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2850 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:53,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2850 Valid, 2572 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:14:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2021-12-22 12:14:54,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1238. [2021-12-22 12:14:54,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.5505254648342766) internal successors, (1918), 1237 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1918 transitions. [2021-12-22 12:14:54,058 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1918 transitions. Word has length 110 [2021-12-22 12:14:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:54,058 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1918 transitions. [2021-12-22 12:14:54,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1918 transitions. [2021-12-22 12:14:54,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 12:14:54,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:54,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:54,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:14:54,060 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:54,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:54,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1186267839, now seen corresponding path program 1 times [2021-12-22 12:14:54,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:54,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283462671] [2021-12-22 12:14:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:54,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:54,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:54,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283462671] [2021-12-22 12:14:54,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283462671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:54,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:54,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:14:54,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115034105] [2021-12-22 12:14:54,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:54,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:54,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:54,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:54,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:54,353 INFO L87 Difference]: Start difference. First operand 1238 states and 1918 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:54,796 INFO L93 Difference]: Finished difference Result 2269 states and 3552 transitions. [2021-12-22 12:14:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 12:14:54,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-22 12:14:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:54,801 INFO L225 Difference]: With dead ends: 2269 [2021-12-22 12:14:54,801 INFO L226 Difference]: Without dead ends: 1240 [2021-12-22 12:14:54,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-22 12:14:54,803 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 677 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:54,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 1394 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:14:54,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-12-22 12:14:54,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1238. [2021-12-22 12:14:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.5448666127728374) internal successors, (1911), 1237 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1911 transitions. [2021-12-22 12:14:54,973 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1911 transitions. Word has length 110 [2021-12-22 12:14:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:54,974 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1911 transitions. [2021-12-22 12:14:54,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:54,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1911 transitions. [2021-12-22 12:14:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 12:14:54,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:54,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:54,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:14:54,976 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:54,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:54,977 INFO L85 PathProgramCache]: Analyzing trace with hash 943143488, now seen corresponding path program 1 times [2021-12-22 12:14:54,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:54,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637830079] [2021-12-22 12:14:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:54,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:55,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:55,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637830079] [2021-12-22 12:14:55,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637830079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:55,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:55,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:14:55,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865795842] [2021-12-22 12:14:55,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:55,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:14:55,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:14:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:14:55,022 INFO L87 Difference]: Start difference. First operand 1238 states and 1911 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:55,372 INFO L93 Difference]: Finished difference Result 3212 states and 5022 transitions. [2021-12-22 12:14:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:14:55,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-22 12:14:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:55,381 INFO L225 Difference]: With dead ends: 3212 [2021-12-22 12:14:55,381 INFO L226 Difference]: Without dead ends: 2183 [2021-12-22 12:14:55,383 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:14:55,384 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 115 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:55,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 640 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:14:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2021-12-22 12:14:55,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 2181. [2021-12-22 12:14:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2181 states, 2180 states have (on average 1.5454128440366972) internal successors, (3369), 2180 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2181 states to 2181 states and 3369 transitions. [2021-12-22 12:14:55,748 INFO L78 Accepts]: Start accepts. Automaton has 2181 states and 3369 transitions. Word has length 110 [2021-12-22 12:14:55,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:55,748 INFO L470 AbstractCegarLoop]: Abstraction has 2181 states and 3369 transitions. [2021-12-22 12:14:55,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2181 states and 3369 transitions. [2021-12-22 12:14:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 12:14:55,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:55,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:55,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:14:55,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:55,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2091479554, now seen corresponding path program 1 times [2021-12-22 12:14:55,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:55,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446943533] [2021-12-22 12:14:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:55,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:55,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:55,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446943533] [2021-12-22 12:14:55,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446943533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:55,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:55,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:14:55,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509234498] [2021-12-22 12:14:55,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:55,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:55,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:55,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:55,869 INFO L87 Difference]: Start difference. First operand 2181 states and 3369 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:56,569 INFO L93 Difference]: Finished difference Result 4357 states and 6769 transitions. [2021-12-22 12:14:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 12:14:56,570 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-22 12:14:56,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:56,584 INFO L225 Difference]: With dead ends: 4357 [2021-12-22 12:14:56,584 INFO L226 Difference]: Without dead ends: 4052 [2021-12-22 12:14:56,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:14:56,586 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 2152 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:56,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2152 Valid, 2863 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:14:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-12-22 12:14:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 2484. [2021-12-22 12:14:56,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2484 states, 2483 states have (on average 1.5477245267821185) internal successors, (3843), 2483 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2484 states to 2484 states and 3843 transitions. [2021-12-22 12:14:56,948 INFO L78 Accepts]: Start accepts. Automaton has 2484 states and 3843 transitions. Word has length 110 [2021-12-22 12:14:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:56,949 INFO L470 AbstractCegarLoop]: Abstraction has 2484 states and 3843 transitions. [2021-12-22 12:14:56,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:56,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2484 states and 3843 transitions. [2021-12-22 12:14:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 12:14:56,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:56,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:56,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:14:56,951 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:56,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1690423504, now seen corresponding path program 1 times [2021-12-22 12:14:56,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:56,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892506275] [2021-12-22 12:14:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:56,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:57,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:57,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892506275] [2021-12-22 12:14:57,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892506275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:57,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:57,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:14:57,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789073561] [2021-12-22 12:14:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:57,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:14:57,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:14:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:14:57,064 INFO L87 Difference]: Start difference. First operand 2484 states and 3843 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:57,959 INFO L93 Difference]: Finished difference Result 4666 states and 7252 transitions. [2021-12-22 12:14:57,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 12:14:57,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-12-22 12:14:57,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:57,974 INFO L225 Difference]: With dead ends: 4666 [2021-12-22 12:14:57,974 INFO L226 Difference]: Without dead ends: 4361 [2021-12-22 12:14:57,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:14:57,976 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 2200 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:57,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2200 Valid, 3676 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:14:57,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2021-12-22 12:14:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 2798. [2021-12-22 12:14:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5495173400071505) internal successors, (4334), 2797 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4334 transitions. [2021-12-22 12:14:58,391 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4334 transitions. Word has length 110 [2021-12-22 12:14:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:58,392 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4334 transitions. [2021-12-22 12:14:58,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4334 transitions. [2021-12-22 12:14:58,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-22 12:14:58,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:58,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:58,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:14:58,394 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:58,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1882311825, now seen corresponding path program 1 times [2021-12-22 12:14:58,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:58,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123940409] [2021-12-22 12:14:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:58,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:58,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:58,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123940409] [2021-12-22 12:14:58,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123940409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:58,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:58,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:14:58,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655025539] [2021-12-22 12:14:58,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:58,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:14:58,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:58,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:14:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:14:58,459 INFO L87 Difference]: Start difference. First operand 2798 states and 4334 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:59,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:14:59,030 INFO L93 Difference]: Finished difference Result 5539 states and 8610 transitions. [2021-12-22 12:14:59,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:14:59,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-12-22 12:14:59,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:14:59,039 INFO L225 Difference]: With dead ends: 5539 [2021-12-22 12:14:59,040 INFO L226 Difference]: Without dead ends: 2798 [2021-12-22 12:14:59,044 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:14:59,044 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 738 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:14:59,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 149 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:14:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-22 12:14:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-12-22 12:14:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5370039327851268) internal successors, (4299), 2797 states have internal predecessors, (4299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4299 transitions. [2021-12-22 12:14:59,499 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4299 transitions. Word has length 111 [2021-12-22 12:14:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:14:59,500 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4299 transitions. [2021-12-22 12:14:59,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:14:59,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4299 transitions. [2021-12-22 12:14:59,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:14:59,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:14:59,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:14:59,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:14:59,502 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:14:59,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:14:59,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1093414131, now seen corresponding path program 1 times [2021-12-22 12:14:59,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:14:59,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468567723] [2021-12-22 12:14:59,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:14:59,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:14:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:14:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:14:59,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:14:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468567723] [2021-12-22 12:14:59,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468567723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:14:59,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:14:59,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:14:59,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101537345] [2021-12-22 12:14:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:14:59,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:14:59,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:14:59,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:14:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:14:59,567 INFO L87 Difference]: Start difference. First operand 2798 states and 4299 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:00,075 INFO L93 Difference]: Finished difference Result 5523 states and 8521 transitions. [2021-12-22 12:15:00,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:15:00,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-12-22 12:15:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:00,083 INFO L225 Difference]: With dead ends: 5523 [2021-12-22 12:15:00,083 INFO L226 Difference]: Without dead ends: 2798 [2021-12-22 12:15:00,086 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:15:00,087 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 687 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:00,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 181 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:15:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-22 12:15:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-12-22 12:15:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5244905255631034) internal successors, (4264), 2797 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4264 transitions. [2021-12-22 12:15:00,438 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4264 transitions. Word has length 112 [2021-12-22 12:15:00,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:00,438 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4264 transitions. [2021-12-22 12:15:00,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:00,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4264 transitions. [2021-12-22 12:15:00,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-22 12:15:00,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:00,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:00,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 12:15:00,448 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:00,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:00,448 INFO L85 PathProgramCache]: Analyzing trace with hash 596896751, now seen corresponding path program 1 times [2021-12-22 12:15:00,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:00,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561657069] [2021-12-22 12:15:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:00,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:00,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:00,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:00,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561657069] [2021-12-22 12:15:00,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561657069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:00,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:00,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:15:00,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093265609] [2021-12-22 12:15:00,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:00,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:15:00,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:00,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:15:00,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:15:00,517 INFO L87 Difference]: Start difference. First operand 2798 states and 4264 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:01,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:01,088 INFO L93 Difference]: Finished difference Result 5515 states and 8442 transitions. [2021-12-22 12:15:01,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:15:01,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-12-22 12:15:01,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:01,099 INFO L225 Difference]: With dead ends: 5515 [2021-12-22 12:15:01,099 INFO L226 Difference]: Without dead ends: 2798 [2021-12-22 12:15:01,103 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:15:01,104 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 661 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:01,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 201 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:15:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-22 12:15:01,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-12-22 12:15:01,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.5119771183410797) internal successors, (4229), 2797 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4229 transitions. [2021-12-22 12:15:01,556 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4229 transitions. Word has length 113 [2021-12-22 12:15:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:01,556 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4229 transitions. [2021-12-22 12:15:01,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:01,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4229 transitions. [2021-12-22 12:15:01,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-22 12:15:01,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:01,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:01,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 12:15:01,558 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:01,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:01,559 INFO L85 PathProgramCache]: Analyzing trace with hash 914047091, now seen corresponding path program 1 times [2021-12-22 12:15:01,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:01,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496106785] [2021-12-22 12:15:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:01,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:01,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:01,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496106785] [2021-12-22 12:15:01,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496106785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:01,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:01,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:15:01,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510245085] [2021-12-22 12:15:01,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:01,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:15:01,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:01,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:15:01,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:15:01,614 INFO L87 Difference]: Start difference. First operand 2798 states and 4229 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:02,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:02,129 INFO L93 Difference]: Finished difference Result 5527 states and 8386 transitions. [2021-12-22 12:15:02,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:15:02,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-12-22 12:15:02,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:02,134 INFO L225 Difference]: With dead ends: 5527 [2021-12-22 12:15:02,135 INFO L226 Difference]: Without dead ends: 2798 [2021-12-22 12:15:02,138 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:15:02,139 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 686 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:02,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 173 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:15:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-22 12:15:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-12-22 12:15:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.499463711119056) internal successors, (4194), 2797 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4194 transitions. [2021-12-22 12:15:02,574 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4194 transitions. Word has length 114 [2021-12-22 12:15:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:02,574 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4194 transitions. [2021-12-22 12:15:02,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:02,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4194 transitions. [2021-12-22 12:15:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-22 12:15:02,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:02,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:02,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 12:15:02,576 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash -932538653, now seen corresponding path program 1 times [2021-12-22 12:15:02,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:02,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293844284] [2021-12-22 12:15:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:02,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:02,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:02,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293844284] [2021-12-22 12:15:02,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293844284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:02,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:02,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:15:02,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646019589] [2021-12-22 12:15:02,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:02,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:15:02,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:02,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:15:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:15:02,631 INFO L87 Difference]: Start difference. First operand 2798 states and 4194 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:03,158 INFO L93 Difference]: Finished difference Result 5535 states and 8326 transitions. [2021-12-22 12:15:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:15:03,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-12-22 12:15:03,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:03,163 INFO L225 Difference]: With dead ends: 5535 [2021-12-22 12:15:03,163 INFO L226 Difference]: Without dead ends: 2798 [2021-12-22 12:15:03,167 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:15:03,167 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 702 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:03,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 157 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:15:03,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-22 12:15:03,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-12-22 12:15:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.4869503038970326) internal successors, (4159), 2797 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4159 transitions. [2021-12-22 12:15:03,593 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4159 transitions. Word has length 115 [2021-12-22 12:15:03,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:03,594 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4159 transitions. [2021-12-22 12:15:03,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:03,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4159 transitions. [2021-12-22 12:15:03,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-22 12:15:03,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:03,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:03,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 12:15:03,597 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:03,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1866315149, now seen corresponding path program 1 times [2021-12-22 12:15:03,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:03,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285300550] [2021-12-22 12:15:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:03,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:03,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:03,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285300550] [2021-12-22 12:15:03,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285300550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:03,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:03,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:15:03,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409225609] [2021-12-22 12:15:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:03,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:15:03,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:15:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:15:03,678 INFO L87 Difference]: Start difference. First operand 2798 states and 4159 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:04,238 INFO L93 Difference]: Finished difference Result 5531 states and 8252 transitions. [2021-12-22 12:15:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:15:04,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-12-22 12:15:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:04,243 INFO L225 Difference]: With dead ends: 5531 [2021-12-22 12:15:04,243 INFO L226 Difference]: Without dead ends: 2798 [2021-12-22 12:15:04,246 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:15:04,248 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 684 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:04,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 165 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:15:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-22 12:15:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-12-22 12:15:04,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.474436896675009) internal successors, (4124), 2797 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4124 transitions. [2021-12-22 12:15:04,685 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4124 transitions. Word has length 116 [2021-12-22 12:15:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:04,685 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4124 transitions. [2021-12-22 12:15:04,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4124 transitions. [2021-12-22 12:15:04,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-22 12:15:04,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:04,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:04,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 12:15:04,686 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:04,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:04,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1607436073, now seen corresponding path program 1 times [2021-12-22 12:15:04,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:04,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212195911] [2021-12-22 12:15:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:04,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:04,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:04,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212195911] [2021-12-22 12:15:04,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212195911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:04,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:04,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:15:04,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329589147] [2021-12-22 12:15:04,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:04,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:15:04,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:04,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:15:04,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:15:04,752 INFO L87 Difference]: Start difference. First operand 2798 states and 4124 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:05,289 INFO L93 Difference]: Finished difference Result 5519 states and 8170 transitions. [2021-12-22 12:15:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:15:05,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-12-22 12:15:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:05,295 INFO L225 Difference]: With dead ends: 5519 [2021-12-22 12:15:05,295 INFO L226 Difference]: Without dead ends: 2798 [2021-12-22 12:15:05,297 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:15:05,298 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 642 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:05,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 189 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:15:05,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-22 12:15:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2021-12-22 12:15:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.4619234894529853) internal successors, (4089), 2797 states have internal predecessors, (4089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4089 transitions. [2021-12-22 12:15:05,759 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4089 transitions. Word has length 117 [2021-12-22 12:15:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:05,759 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 4089 transitions. [2021-12-22 12:15:05,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:05,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4089 transitions. [2021-12-22 12:15:05,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 12:15:05,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:05,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:05,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 12:15:05,761 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:05,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash 154166167, now seen corresponding path program 1 times [2021-12-22 12:15:05,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:05,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11101877] [2021-12-22 12:15:05,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:05,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:05,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:05,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11101877] [2021-12-22 12:15:05,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11101877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:05,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:05,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:15:05,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679216771] [2021-12-22 12:15:05,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:05,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:15:05,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:05,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:15:05,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:15:05,848 INFO L87 Difference]: Start difference. First operand 2798 states and 4089 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:06,828 INFO L93 Difference]: Finished difference Result 4634 states and 6793 transitions. [2021-12-22 12:15:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:15:06,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-22 12:15:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:06,835 INFO L225 Difference]: With dead ends: 4634 [2021-12-22 12:15:06,836 INFO L226 Difference]: Without dead ends: 4632 [2021-12-22 12:15:06,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:15:06,837 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 226 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:06,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 1059 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:15:06,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2021-12-22 12:15:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 2814. [2021-12-22 12:15:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.4560966939210807) internal successors, (4096), 2813 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4096 transitions. [2021-12-22 12:15:07,400 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4096 transitions. Word has length 118 [2021-12-22 12:15:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:07,400 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 4096 transitions. [2021-12-22 12:15:07,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:07,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4096 transitions. [2021-12-22 12:15:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-22 12:15:07,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:07,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:07,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 12:15:07,401 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:07,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:07,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1441850003, now seen corresponding path program 1 times [2021-12-22 12:15:07,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:07,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713241082] [2021-12-22 12:15:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:07,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:07,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:07,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713241082] [2021-12-22 12:15:07,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713241082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:07,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:07,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:15:07,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100159488] [2021-12-22 12:15:07,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:07,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:15:07,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:07,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:15:07,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:15:07,592 INFO L87 Difference]: Start difference. First operand 2814 states and 4096 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:09,123 INFO L93 Difference]: Finished difference Result 8099 states and 11849 transitions. [2021-12-22 12:15:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:15:09,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-12-22 12:15:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:09,129 INFO L225 Difference]: With dead ends: 8099 [2021-12-22 12:15:09,129 INFO L226 Difference]: Without dead ends: 5408 [2021-12-22 12:15:09,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:15:09,131 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1524 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:09,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 459 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:15:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2021-12-22 12:15:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 2814. [2021-12-22 12:15:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2813 states have (on average 1.4557412015641664) internal successors, (4095), 2813 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4095 transitions. [2021-12-22 12:15:09,645 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4095 transitions. Word has length 118 [2021-12-22 12:15:09,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:09,645 INFO L470 AbstractCegarLoop]: Abstraction has 2814 states and 4095 transitions. [2021-12-22 12:15:09,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4095 transitions. [2021-12-22 12:15:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-22 12:15:09,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:09,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:09,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 12:15:09,646 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:09,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1402661961, now seen corresponding path program 1 times [2021-12-22 12:15:09,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:09,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850418435] [2021-12-22 12:15:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:09,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:09,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:09,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850418435] [2021-12-22 12:15:09,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850418435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:09,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:09,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 12:15:09,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717130514] [2021-12-22 12:15:09,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:09,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 12:15:09,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 12:15:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-22 12:15:09,895 INFO L87 Difference]: Start difference. First operand 2814 states and 4095 transitions. Second operand has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:12,939 INFO L93 Difference]: Finished difference Result 13232 states and 19121 transitions. [2021-12-22 12:15:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-22 12:15:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-12-22 12:15:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:12,951 INFO L225 Difference]: With dead ends: 13232 [2021-12-22 12:15:12,951 INFO L226 Difference]: Without dead ends: 10638 [2021-12-22 12:15:12,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-12-22 12:15:12,955 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 2173 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:12,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2173 Valid, 1111 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 12:15:12,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10638 states. [2021-12-22 12:15:13,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10638 to 2927. [2021-12-22 12:15:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2926 states have (on average 1.457963089542037) internal successors, (4266), 2926 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4266 transitions. [2021-12-22 12:15:13,624 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4266 transitions. Word has length 119 [2021-12-22 12:15:13,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:13,624 INFO L470 AbstractCegarLoop]: Abstraction has 2927 states and 4266 transitions. [2021-12-22 12:15:13,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.5) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4266 transitions. [2021-12-22 12:15:13,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-22 12:15:13,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:13,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:13,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 12:15:13,626 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1554016695, now seen corresponding path program 1 times [2021-12-22 12:15:13,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:13,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101769644] [2021-12-22 12:15:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:13,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:13,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:13,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101769644] [2021-12-22 12:15:13,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101769644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:13,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:13,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:15:13,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722295182] [2021-12-22 12:15:13,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:13,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 12:15:13,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:13,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 12:15:13,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 12:15:13,791 INFO L87 Difference]: Start difference. First operand 2927 states and 4266 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:15,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:15,825 INFO L93 Difference]: Finished difference Result 8436 states and 12324 transitions. [2021-12-22 12:15:15,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:15:15,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-12-22 12:15:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:15,833 INFO L225 Difference]: With dead ends: 8436 [2021-12-22 12:15:15,833 INFO L226 Difference]: Without dead ends: 5681 [2021-12-22 12:15:15,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-12-22 12:15:15,838 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 2071 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:15,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2071 Valid, 538 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:15:15,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2021-12-22 12:15:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 2927. [2021-12-22 12:15:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2926 states have (on average 1.4559125085440876) internal successors, (4260), 2926 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4260 transitions. [2021-12-22 12:15:16,505 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4260 transitions. Word has length 119 [2021-12-22 12:15:16,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:16,506 INFO L470 AbstractCegarLoop]: Abstraction has 2927 states and 4260 transitions. [2021-12-22 12:15:16,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4260 transitions. [2021-12-22 12:15:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-22 12:15:16,507 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:16,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:16,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 12:15:16,508 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1770166343, now seen corresponding path program 1 times [2021-12-22 12:15:16,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:16,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521314869] [2021-12-22 12:15:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:16,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:16,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:16,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521314869] [2021-12-22 12:15:16,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521314869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:16,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:16,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:15:16,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99007269] [2021-12-22 12:15:16,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:16,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 12:15:16,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:16,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 12:15:16,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 12:15:16,658 INFO L87 Difference]: Start difference. First operand 2927 states and 4260 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:18,520 INFO L93 Difference]: Finished difference Result 8400 states and 12252 transitions. [2021-12-22 12:15:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:15:18,522 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-12-22 12:15:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:18,529 INFO L225 Difference]: With dead ends: 8400 [2021-12-22 12:15:18,529 INFO L226 Difference]: Without dead ends: 5720 [2021-12-22 12:15:18,532 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:15:18,532 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 1268 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:18,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1268 Valid, 520 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:15:18,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2021-12-22 12:15:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 2927. [2021-12-22 12:15:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2926 states have (on average 1.4521531100478469) internal successors, (4249), 2926 states have internal predecessors, (4249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4249 transitions. [2021-12-22 12:15:19,241 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4249 transitions. Word has length 120 [2021-12-22 12:15:19,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:19,241 INFO L470 AbstractCegarLoop]: Abstraction has 2927 states and 4249 transitions. [2021-12-22 12:15:19,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4249 transitions. [2021-12-22 12:15:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-22 12:15:19,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:19,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:19,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 12:15:19,243 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:19,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:19,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1831488448, now seen corresponding path program 1 times [2021-12-22 12:15:19,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:19,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474247441] [2021-12-22 12:15:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:19,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:19,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:19,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474247441] [2021-12-22 12:15:19,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474247441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:19,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:19,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:15:19,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039324594] [2021-12-22 12:15:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:19,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 12:15:19,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:19,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 12:15:19,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 12:15:19,402 INFO L87 Difference]: Start difference. First operand 2927 states and 4249 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:21,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:21,614 INFO L93 Difference]: Finished difference Result 8475 states and 12343 transitions. [2021-12-22 12:15:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:15:21,615 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-12-22 12:15:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:21,621 INFO L225 Difference]: With dead ends: 8475 [2021-12-22 12:15:21,621 INFO L226 Difference]: Without dead ends: 5750 [2021-12-22 12:15:21,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-12-22 12:15:21,623 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1831 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:21,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1831 Valid, 586 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:15:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2021-12-22 12:15:22,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 2927. [2021-12-22 12:15:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2927 states, 2926 states have (on average 1.4490772385509227) internal successors, (4240), 2926 states have internal predecessors, (4240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2927 states to 2927 states and 4240 transitions. [2021-12-22 12:15:22,394 INFO L78 Accepts]: Start accepts. Automaton has 2927 states and 4240 transitions. Word has length 121 [2021-12-22 12:15:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:22,395 INFO L470 AbstractCegarLoop]: Abstraction has 2927 states and 4240 transitions. [2021-12-22 12:15:22,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2927 states and 4240 transitions. [2021-12-22 12:15:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-22 12:15:22,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:22,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:22,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 12:15:22,397 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:22,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:22,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1616884477, now seen corresponding path program 1 times [2021-12-22 12:15:22,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:22,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069481541] [2021-12-22 12:15:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:22,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:22,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:22,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069481541] [2021-12-22 12:15:22,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069481541] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:22,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:22,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:15:22,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389806859] [2021-12-22 12:15:22,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:22,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 12:15:22,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:22,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 12:15:22,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 12:15:22,557 INFO L87 Difference]: Start difference. First operand 2927 states and 4240 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:26,196 INFO L93 Difference]: Finished difference Result 13046 states and 18898 transitions. [2021-12-22 12:15:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 12:15:26,197 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-12-22 12:15:26,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:26,210 INFO L225 Difference]: With dead ends: 13046 [2021-12-22 12:15:26,210 INFO L226 Difference]: Without dead ends: 10452 [2021-12-22 12:15:26,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-12-22 12:15:26,214 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 1772 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:26,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1772 Valid, 595 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:15:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10452 states. [2021-12-22 12:15:27,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10452 to 2838. [2021-12-22 12:15:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 1.449418399718012) internal successors, (4112), 2837 states have internal predecessors, (4112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 4112 transitions. [2021-12-22 12:15:27,007 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 4112 transitions. Word has length 122 [2021-12-22 12:15:27,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:27,007 INFO L470 AbstractCegarLoop]: Abstraction has 2838 states and 4112 transitions. [2021-12-22 12:15:27,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 4112 transitions. [2021-12-22 12:15:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-22 12:15:27,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:27,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:27,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 12:15:27,009 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:27,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash -352302304, now seen corresponding path program 1 times [2021-12-22 12:15:27,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:27,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989271606] [2021-12-22 12:15:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:27,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:27,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:27,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989271606] [2021-12-22 12:15:27,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989271606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:27,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:27,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:15:27,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136167747] [2021-12-22 12:15:27,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:27,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 12:15:27,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:27,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 12:15:27,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-22 12:15:27,159 INFO L87 Difference]: Start difference. First operand 2838 states and 4112 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:29,464 INFO L93 Difference]: Finished difference Result 8325 states and 12110 transitions. [2021-12-22 12:15:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:15:29,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-12-22 12:15:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:29,470 INFO L225 Difference]: With dead ends: 8325 [2021-12-22 12:15:29,470 INFO L226 Difference]: Without dead ends: 5618 [2021-12-22 12:15:29,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-12-22 12:15:29,474 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 1136 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:29,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 752 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:15:29,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2021-12-22 12:15:30,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 2838. [2021-12-22 12:15:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 1.4487134296792386) internal successors, (4110), 2837 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:30,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 4110 transitions. [2021-12-22 12:15:30,346 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 4110 transitions. Word has length 122 [2021-12-22 12:15:30,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:30,346 INFO L470 AbstractCegarLoop]: Abstraction has 2838 states and 4110 transitions. [2021-12-22 12:15:30,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:30,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 4110 transitions. [2021-12-22 12:15:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-22 12:15:30,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:30,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:30,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 12:15:30,348 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:30,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1692852677, now seen corresponding path program 1 times [2021-12-22 12:15:30,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:30,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709608928] [2021-12-22 12:15:30,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:30,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:30,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:30,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709608928] [2021-12-22 12:15:30,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709608928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:30,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:30,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 12:15:30,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830786217] [2021-12-22 12:15:30,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:30,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 12:15:30,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:30,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 12:15:30,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 12:15:30,540 INFO L87 Difference]: Start difference. First operand 2838 states and 4110 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:32,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:32,875 INFO L93 Difference]: Finished difference Result 8180 states and 11898 transitions. [2021-12-22 12:15:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:15:32,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2021-12-22 12:15:32,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:32,881 INFO L225 Difference]: With dead ends: 8180 [2021-12-22 12:15:32,881 INFO L226 Difference]: Without dead ends: 5558 [2021-12-22 12:15:32,883 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:15:32,883 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 1579 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:32,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 719 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:15:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2021-12-22 12:15:33,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 2838. [2021-12-22 12:15:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2838 states, 2837 states have (on average 1.446246034543532) internal successors, (4103), 2837 states have internal predecessors, (4103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:33,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2838 states to 2838 states and 4103 transitions. [2021-12-22 12:15:33,825 INFO L78 Accepts]: Start accepts. Automaton has 2838 states and 4103 transitions. Word has length 123 [2021-12-22 12:15:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:33,825 INFO L470 AbstractCegarLoop]: Abstraction has 2838 states and 4103 transitions. [2021-12-22 12:15:33,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:33,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2838 states and 4103 transitions. [2021-12-22 12:15:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-22 12:15:33,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:33,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:33,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 12:15:33,827 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:33,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1094727144, now seen corresponding path program 1 times [2021-12-22 12:15:33,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:33,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865863696] [2021-12-22 12:15:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:33,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:34,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865863696] [2021-12-22 12:15:34,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865863696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:34,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:34,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 12:15:34,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138686578] [2021-12-22 12:15:34,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:34,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 12:15:34,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:34,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 12:15:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-22 12:15:34,163 INFO L87 Difference]: Start difference. First operand 2838 states and 4103 transitions. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:15:38,966 INFO L93 Difference]: Finished difference Result 11522 states and 16797 transitions. [2021-12-22 12:15:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:15:38,967 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-12-22 12:15:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:15:38,979 INFO L225 Difference]: With dead ends: 11522 [2021-12-22 12:15:38,980 INFO L226 Difference]: Without dead ends: 10872 [2021-12-22 12:15:38,983 INFO L932 BasicCegarLoop]: 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 [2021-12-22 12:15:38,983 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1422 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:15:38,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 3089 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:15:38,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10872 states. [2021-12-22 12:15:40,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10872 to 2819. [2021-12-22 12:15:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2818 states have (on average 1.4453513129879347) internal successors, (4073), 2818 states have internal predecessors, (4073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4073 transitions. [2021-12-22 12:15:40,148 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4073 transitions. Word has length 124 [2021-12-22 12:15:40,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:15:40,148 INFO L470 AbstractCegarLoop]: Abstraction has 2819 states and 4073 transitions. [2021-12-22 12:15:40,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:15:40,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4073 transitions. [2021-12-22 12:15:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-22 12:15:40,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:15:40,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:15:40,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 12:15:40,150 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:15:40,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:15:40,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1606632569, now seen corresponding path program 1 times [2021-12-22 12:15:40,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:15:40,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838445399] [2021-12-22 12:15:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:15:40,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:15:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:15:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:15:42,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:15:42,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838445399] [2021-12-22 12:15:42,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838445399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:15:42,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:15:42,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-12-22 12:15:42,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560527000] [2021-12-22 12:15:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:15:42,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-22 12:15:42,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:15:42,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-22 12:15:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2021-12-22 12:15:42,619 INFO L87 Difference]: Start difference. First operand 2819 states and 4073 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 45 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)