./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.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 25b17d9846be3bf6d57cc6f8838ab7429415f7d55e2316a61257e7b64e148fac --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:08:50,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:08:50,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:08:50,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:08:50,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:08:50,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:08:50,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:08:50,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:08:50,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:08:50,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:08:50,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:08:50,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:08:50,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:08:50,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:08:50,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:08:50,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:08:50,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:08:50,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:08:50,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:08:50,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:08:50,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:08:50,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:08:50,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:08:50,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:08:50,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:08:50,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:08:50,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:08:50,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:08:50,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:08:50,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:08:50,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:08:50,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:08:50,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:08:50,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:08:50,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:08:50,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:08:50,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:08:50,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:08:50,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:08:50,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:08:50,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:08:50,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:08:50,502 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:08:50,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:08:50,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:08:50,503 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:08:50,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:08:50,504 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:08:50,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:08:50,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:08:50,505 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:08:50,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:08:50,506 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:08:50,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:08:50,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:08:50,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:08:50,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:08:50,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:08:50,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:08:50,507 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:08:50,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:08:50,508 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:08:50,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:08:50,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:08:50,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:08:50,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:08:50,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:08:50,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:08:50,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:08:50,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:08:50,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:08:50,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:08:50,510 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:08:50,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:08:50,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:08:50,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:08:50,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25b17d9846be3bf6d57cc6f8838ab7429415f7d55e2316a61257e7b64e148fac [2021-12-22 13:08:50,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:08:50,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:08:50,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:08:50,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:08:50,791 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:08:50,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c [2021-12-22 13:08:50,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/126d5896b/db8c539f3cd748e299202e4f389ba0a7/FLAG1134aa251 [2021-12-22 13:08:51,510 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:08:51,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c [2021-12-22 13:08:51,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/126d5896b/db8c539f3cd748e299202e4f389ba0a7/FLAG1134aa251 [2021-12-22 13:08:51,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/126d5896b/db8c539f3cd748e299202e4f389ba0a7 [2021-12-22 13:08:51,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:08:51,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:08:51,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:08:51,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:08:51,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:08:51,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:08:51" (1/1) ... [2021-12-22 13:08:51,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fcdc8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:51, skipping insertion in model container [2021-12-22 13:08:51,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:08:51" (1/1) ... [2021-12-22 13:08:51,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:08:52,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:08:52,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[26888,26901] [2021-12-22 13:08:52,437 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[32443,32456] [2021-12-22 13:08:53,190 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:08:53,200 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:08:53,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[26888,26901] [2021-12-22 13:08:53,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[32443,32456] [2021-12-22 13:08:53,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:08:53,753 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:08:53,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53 WrapperNode [2021-12-22 13:08:53,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:08:53,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:08:53,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:08:53,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:08:53,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:53,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:54,139 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5279 [2021-12-22 13:08:54,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:08:54,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:08:54,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:08:54,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:08:54,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:54,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:54,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:54,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:54,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:54,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:54,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:54,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:08:54,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:08:54,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:08:54,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:08:54,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (1/1) ... [2021-12-22 13:08:54,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:08:54,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:08:54,660 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 13:08:54,677 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 13:08:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:08:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:08:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:08:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:08:54,857 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:08:54,858 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:08:58,202 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:08:58,223 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:08:58,223 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:08:58,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:08:58 BoogieIcfgContainer [2021-12-22 13:08:58,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:08:58,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:08:58,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:08:58,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:08:58,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:08:51" (1/3) ... [2021-12-22 13:08:58,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b83c965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:08:58, skipping insertion in model container [2021-12-22 13:08:58,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:08:53" (2/3) ... [2021-12-22 13:08:58,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b83c965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:08:58, skipping insertion in model container [2021-12-22 13:08:58,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:08:58" (3/3) ... [2021-12-22 13:08:58,234 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c [2021-12-22 13:08:58,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:08:58,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:08:58,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:08:58,285 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 13:08:58,285 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:08:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 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 13:08:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 13:08:58,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:08:58,318 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] [2021-12-22 13:08:58,319 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:08:58,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:08:58,323 INFO L85 PathProgramCache]: Analyzing trace with hash -805214309, now seen corresponding path program 1 times [2021-12-22 13:08:58,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:08:58,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320398448] [2021-12-22 13:08:58,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:08:58,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:08:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:08:58,514 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 13:08:58,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:08:58,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320398448] [2021-12-22 13:08:58,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320398448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:08:58,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:08:58,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:08:58,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272941917] [2021-12-22 13:08:58,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:08:58,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 13:08:58,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:08:58,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 13:08:58,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:08:58,548 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 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 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:08:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:08:58,625 INFO L93 Difference]: Finished difference Result 1861 states and 3516 transitions. [2021-12-22 13:08:58,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 13:08:58,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-22 13:08:58,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:08:58,646 INFO L225 Difference]: With dead ends: 1861 [2021-12-22 13:08:58,651 INFO L226 Difference]: Without dead ends: 899 [2021-12-22 13:08:58,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 13:08:58,663 INFO L933 BasicCegarLoop]: 1755 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:08:58,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:08:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-12-22 13:08:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-12-22 13:08:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8851727982162765) internal successors, (1691), 898 states have internal predecessors, (1691), 0 states have call successors, (0), 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 13:08:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1691 transitions. [2021-12-22 13:08:58,736 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1691 transitions. Word has length 46 [2021-12-22 13:08:58,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:08:58,737 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1691 transitions. [2021-12-22 13:08:58,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:08:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1691 transitions. [2021-12-22 13:08:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 13:08:58,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:08:58,739 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] [2021-12-22 13:08:58,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:08:58,740 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:08:58,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:08:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2021-12-22 13:08:58,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:08:58,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656055380] [2021-12-22 13:08:58,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:08:58,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:08:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:08:58,871 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 13:08:58,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:08:58,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656055380] [2021-12-22 13:08:58,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656055380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:08:58,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:08:58,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:08:58,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405499956] [2021-12-22 13:08:58,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:08:58,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:08:58,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:08:58,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:08:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:08:58,880 INFO L87 Difference]: Start difference. First operand 899 states and 1691 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:08:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:08:59,008 INFO L93 Difference]: Finished difference Result 981 states and 1819 transitions. [2021-12-22 13:08:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:08:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-22 13:08:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:08:59,013 INFO L225 Difference]: With dead ends: 981 [2021-12-22 13:08:59,013 INFO L226 Difference]: Without dead ends: 899 [2021-12-22 13:08:59,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:08:59,015 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:08:59,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:08:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-12-22 13:08:59,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-12-22 13:08:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8171683389074693) internal successors, (1630), 898 states have internal predecessors, (1630), 0 states have call successors, (0), 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 13:08:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1630 transitions. [2021-12-22 13:08:59,042 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1630 transitions. Word has length 46 [2021-12-22 13:08:59,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:08:59,042 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1630 transitions. [2021-12-22 13:08:59,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:08:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1630 transitions. [2021-12-22 13:08:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 13:08:59,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:08:59,044 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] [2021-12-22 13:08:59,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:08:59,045 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:08:59,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:08:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1418201483, now seen corresponding path program 1 times [2021-12-22 13:08:59,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:08:59,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699143107] [2021-12-22 13:08:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:08:59,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:08:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:08:59,206 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 13:08:59,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:08:59,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699143107] [2021-12-22 13:08:59,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699143107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:08:59,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:08:59,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:08:59,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888561257] [2021-12-22 13:08:59,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:08:59,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:08:59,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:08:59,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:08:59,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:08:59,209 INFO L87 Difference]: Start difference. First operand 899 states and 1630 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 13:09:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:02,160 INFO L93 Difference]: Finished difference Result 2403 states and 4503 transitions. [2021-12-22 13:09:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:02,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-22 13:09:02,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:02,168 INFO L225 Difference]: With dead ends: 2403 [2021-12-22 13:09:02,168 INFO L226 Difference]: Without dead ends: 1650 [2021-12-22 13:09:02,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:02,176 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 961 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:02,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [961 Valid, 619 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-22 13:09:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-12-22 13:09:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2021-12-22 13:09:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.612257281553398) internal successors, (2657), 1649 states have internal predecessors, (2657), 0 states have call successors, (0), 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 13:09:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2657 transitions. [2021-12-22 13:09:02,213 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2657 transitions. Word has length 48 [2021-12-22 13:09:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:02,214 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 2657 transitions. [2021-12-22 13:09:02,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 13:09:02,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2657 transitions. [2021-12-22 13:09:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:09:02,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:02,221 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] [2021-12-22 13:09:02,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:09:02,222 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:02,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:02,223 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2021-12-22 13:09:02,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:02,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577893666] [2021-12-22 13:09:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:02,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:02,325 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 13:09:02,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:02,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577893666] [2021-12-22 13:09:02,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577893666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:02,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:02,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:02,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342649208] [2021-12-22 13:09:02,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:02,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:09:02,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:09:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:02,328 INFO L87 Difference]: Start difference. First operand 1650 states and 2657 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:02,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:02,359 INFO L93 Difference]: Finished difference Result 1800 states and 2895 transitions. [2021-12-22 13:09:02,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:02,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:09:02,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:02,366 INFO L225 Difference]: With dead ends: 1800 [2021-12-22 13:09:02,366 INFO L226 Difference]: Without dead ends: 1722 [2021-12-22 13:09:02,366 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 13:09:02,367 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:02,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:02,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-22 13:09:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2021-12-22 13:09:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.6117578579743888) internal successors, (2769), 1719 states have internal predecessors, (2769), 0 states have call successors, (0), 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 13:09:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2769 transitions. [2021-12-22 13:09:02,434 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2769 transitions. Word has length 106 [2021-12-22 13:09:02,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:02,435 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 2769 transitions. [2021-12-22 13:09:02,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2769 transitions. [2021-12-22 13:09:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:09:02,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:02,436 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] [2021-12-22 13:09:02,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:09:02,437 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:02,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2021-12-22 13:09:02,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:02,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499482918] [2021-12-22 13:09:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:02,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:02,512 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 13:09:02,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:02,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499482918] [2021-12-22 13:09:02,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499482918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:02,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:02,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:02,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142754972] [2021-12-22 13:09:02,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:02,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:09:02,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:02,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:09:02,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:02,516 INFO L87 Difference]: Start difference. First operand 1720 states and 2769 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:02,553 INFO L93 Difference]: Finished difference Result 2004 states and 3221 transitions. [2021-12-22 13:09:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:02,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:09:02,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:02,560 INFO L225 Difference]: With dead ends: 2004 [2021-12-22 13:09:02,560 INFO L226 Difference]: Without dead ends: 1856 [2021-12-22 13:09:02,561 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 13:09:02,562 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:02,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-12-22 13:09:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1854. [2021-12-22 13:09:02,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1852 states have (on average 1.6101511879049677) internal successors, (2982), 1853 states have internal predecessors, (2982), 0 states have call successors, (0), 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 13:09:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2982 transitions. [2021-12-22 13:09:02,601 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2982 transitions. Word has length 106 [2021-12-22 13:09:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:02,602 INFO L470 AbstractCegarLoop]: Abstraction has 1854 states and 2982 transitions. [2021-12-22 13:09:02,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2982 transitions. [2021-12-22 13:09:02,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:09:02,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:02,604 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] [2021-12-22 13:09:02,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:09:02,604 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2021-12-22 13:09:02,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:02,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819048547] [2021-12-22 13:09:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:02,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:02,672 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 13:09:02,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:02,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819048547] [2021-12-22 13:09:02,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819048547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:02,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:02,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:02,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587439734] [2021-12-22 13:09:02,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:02,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:09:02,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:09:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:02,676 INFO L87 Difference]: Start difference. First operand 1854 states and 2982 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:02,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:02,720 INFO L93 Difference]: Finished difference Result 2394 states and 3840 transitions. [2021-12-22 13:09:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:02,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:09:02,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:02,729 INFO L225 Difference]: With dead ends: 2394 [2021-12-22 13:09:02,729 INFO L226 Difference]: Without dead ends: 2112 [2021-12-22 13:09:02,730 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 13:09:02,731 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:02,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-12-22 13:09:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2110. [2021-12-22 13:09:02,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2108 states have (on average 1.6062618595825426) internal successors, (3386), 2109 states have internal predecessors, (3386), 0 states have call successors, (0), 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 13:09:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3386 transitions. [2021-12-22 13:09:02,780 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3386 transitions. Word has length 106 [2021-12-22 13:09:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:02,781 INFO L470 AbstractCegarLoop]: Abstraction has 2110 states and 3386 transitions. [2021-12-22 13:09:02,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3386 transitions. [2021-12-22 13:09:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:09:02,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:02,782 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] [2021-12-22 13:09:02,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:09:02,783 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2021-12-22 13:09:02,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:02,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209738061] [2021-12-22 13:09:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:02,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:02,842 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 13:09:02,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:02,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209738061] [2021-12-22 13:09:02,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209738061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:02,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:02,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:02,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933999145] [2021-12-22 13:09:02,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:02,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:09:02,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:02,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:09:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:02,845 INFO L87 Difference]: Start difference. First operand 2110 states and 3386 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:02,904 INFO L93 Difference]: Finished difference Result 3138 states and 5012 transitions. [2021-12-22 13:09:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:02,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:09:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:02,914 INFO L225 Difference]: With dead ends: 3138 [2021-12-22 13:09:02,914 INFO L226 Difference]: Without dead ends: 2600 [2021-12-22 13:09:02,916 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 13:09:02,916 INFO L933 BasicCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:02,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:02,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-12-22 13:09:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2598. [2021-12-22 13:09:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 2596 states have (on average 1.5986132511556241) internal successors, (4150), 2597 states have internal predecessors, (4150), 0 states have call successors, (0), 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 13:09:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 4150 transitions. [2021-12-22 13:09:02,988 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 4150 transitions. Word has length 106 [2021-12-22 13:09:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:02,988 INFO L470 AbstractCegarLoop]: Abstraction has 2598 states and 4150 transitions. [2021-12-22 13:09:02,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 4150 transitions. [2021-12-22 13:09:02,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:09:02,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:02,990 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] [2021-12-22 13:09:02,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:09:02,991 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2021-12-22 13:09:02,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:02,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879444785] [2021-12-22 13:09:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:02,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:03,046 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 13:09:03,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:03,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879444785] [2021-12-22 13:09:03,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879444785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:03,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:03,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:03,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838236279] [2021-12-22 13:09:03,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:03,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:09:03,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:03,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:09:03,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:03,049 INFO L87 Difference]: Start difference. First operand 2598 states and 4150 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:03,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:03,139 INFO L93 Difference]: Finished difference Result 4554 states and 7224 transitions. [2021-12-22 13:09:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:03,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:09:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:03,152 INFO L225 Difference]: With dead ends: 4554 [2021-12-22 13:09:03,153 INFO L226 Difference]: Without dead ends: 3528 [2021-12-22 13:09:03,155 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 13:09:03,155 INFO L933 BasicCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:03,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2021-12-22 13:09:03,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2021-12-22 13:09:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3524 states have (on average 1.5862656072644723) internal successors, (5590), 3525 states have internal predecessors, (5590), 0 states have call successors, (0), 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 13:09:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5590 transitions. [2021-12-22 13:09:03,264 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5590 transitions. Word has length 106 [2021-12-22 13:09:03,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:03,264 INFO L470 AbstractCegarLoop]: Abstraction has 3526 states and 5590 transitions. [2021-12-22 13:09:03,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5590 transitions. [2021-12-22 13:09:03,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:09:03,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:03,266 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] [2021-12-22 13:09:03,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:09:03,267 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:03,267 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2021-12-22 13:09:03,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:03,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117067531] [2021-12-22 13:09:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:03,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:03,325 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 13:09:03,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:03,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117067531] [2021-12-22 13:09:03,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117067531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:03,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:03,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:03,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053601039] [2021-12-22 13:09:03,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:03,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:09:03,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:03,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:09:03,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:03,328 INFO L87 Difference]: Start difference. First operand 3526 states and 5590 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:03,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:03,466 INFO L93 Difference]: Finished difference Result 7242 states and 11384 transitions. [2021-12-22 13:09:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:03,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:09:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:03,484 INFO L225 Difference]: With dead ends: 7242 [2021-12-22 13:09:03,485 INFO L226 Difference]: Without dead ends: 5288 [2021-12-22 13:09:03,488 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 13:09:03,490 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:03,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2021-12-22 13:09:03,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 5286. [2021-12-22 13:09:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 5284 states have (on average 1.5696442089326268) internal successors, (8294), 5285 states have internal predecessors, (8294), 0 states have call successors, (0), 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 13:09:03,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8294 transitions. [2021-12-22 13:09:03,741 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8294 transitions. Word has length 106 [2021-12-22 13:09:03,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:03,742 INFO L470 AbstractCegarLoop]: Abstraction has 5286 states and 8294 transitions. [2021-12-22 13:09:03,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8294 transitions. [2021-12-22 13:09:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:09:03,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:03,743 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] [2021-12-22 13:09:03,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:09:03,746 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:03,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2021-12-22 13:09:03,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:03,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623351267] [2021-12-22 13:09:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:03,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:03,803 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 13:09:03,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:03,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623351267] [2021-12-22 13:09:03,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623351267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:03,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:03,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:03,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765560676] [2021-12-22 13:09:03,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:03,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:09:03,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:09:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:03,806 INFO L87 Difference]: Start difference. First operand 5286 states and 8294 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:04,066 INFO L93 Difference]: Finished difference Result 12330 states and 19176 transitions. [2021-12-22 13:09:04,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:04,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:09:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:04,106 INFO L225 Difference]: With dead ends: 12330 [2021-12-22 13:09:04,106 INFO L226 Difference]: Without dead ends: 8616 [2021-12-22 13:09:04,114 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 13:09:04,115 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:04,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:04,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2021-12-22 13:09:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 8614. [2021-12-22 13:09:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8614 states, 8612 states have (on average 1.5501625638643752) internal successors, (13350), 8613 states have internal predecessors, (13350), 0 states have call successors, (0), 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 13:09:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8614 states to 8614 states and 13350 transitions. [2021-12-22 13:09:04,484 INFO L78 Accepts]: Start accepts. Automaton has 8614 states and 13350 transitions. Word has length 106 [2021-12-22 13:09:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:04,485 INFO L470 AbstractCegarLoop]: Abstraction has 8614 states and 13350 transitions. [2021-12-22 13:09:04,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8614 states and 13350 transitions. [2021-12-22 13:09:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-22 13:09:04,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:04,487 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] [2021-12-22 13:09:04,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 13:09:04,488 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:04,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:04,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2021-12-22 13:09:04,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:04,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937108566] [2021-12-22 13:09:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:04,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:04,613 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 13:09:04,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937108566] [2021-12-22 13:09:04,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937108566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:04,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:04,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:09:04,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552293385] [2021-12-22 13:09:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:04,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:09:04,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:04,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:09:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:09:04,616 INFO L87 Difference]: Start difference. First operand 8614 states and 13350 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:09,501 INFO L93 Difference]: Finished difference Result 121286 states and 186422 transitions. [2021-12-22 13:09:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 13:09:09,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-22 13:09:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:09,789 INFO L225 Difference]: With dead ends: 121286 [2021-12-22 13:09:09,789 INFO L226 Difference]: Without dead ends: 114244 [2021-12-22 13:09:09,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-22 13:09:09,838 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:09,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:09:09,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114244 states. [2021-12-22 13:09:12,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114244 to 15654. [2021-12-22 13:09:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15654 states, 15652 states have (on average 1.527600306670074) internal successors, (23910), 15653 states have internal predecessors, (23910), 0 states have call successors, (0), 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 13:09:12,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15654 states to 15654 states and 23910 transitions. [2021-12-22 13:09:12,158 INFO L78 Accepts]: Start accepts. Automaton has 15654 states and 23910 transitions. Word has length 106 [2021-12-22 13:09:12,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:12,158 INFO L470 AbstractCegarLoop]: Abstraction has 15654 states and 23910 transitions. [2021-12-22 13:09:12,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 15654 states and 23910 transitions. [2021-12-22 13:09:12,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 13:09:12,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:12,160 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 13:09:12,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 13:09:12,160 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:12,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:12,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2021-12-22 13:09:12,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:12,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084889861] [2021-12-22 13:09:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:12,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:12,238 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 13:09:12,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:12,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084889861] [2021-12-22 13:09:12,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084889861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:12,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:12,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:12,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722749535] [2021-12-22 13:09:12,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:12,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:09:12,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:12,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:09:12,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:12,241 INFO L87 Difference]: Start difference. First operand 15654 states and 23910 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:14,094 INFO L93 Difference]: Finished difference Result 42410 states and 64232 transitions. [2021-12-22 13:09:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:14,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-22 13:09:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:14,133 INFO L225 Difference]: With dead ends: 42410 [2021-12-22 13:09:14,134 INFO L226 Difference]: Without dead ends: 28328 [2021-12-22 13:09:14,155 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 13:09:14,156 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:14,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28328 states. [2021-12-22 13:09:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28328 to 28070. [2021-12-22 13:09:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4948696023941856) internal successors, (41958), 28069 states have internal predecessors, (41958), 0 states have call successors, (0), 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 13:09:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41958 transitions. [2021-12-22 13:09:16,104 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41958 transitions. Word has length 108 [2021-12-22 13:09:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:16,104 INFO L470 AbstractCegarLoop]: Abstraction has 28070 states and 41958 transitions. [2021-12-22 13:09:16,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41958 transitions. [2021-12-22 13:09:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-22 13:09:16,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:16,106 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 13:09:16,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 13:09:16,107 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2021-12-22 13:09:16,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:16,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572855916] [2021-12-22 13:09:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:16,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:16,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:16,417 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 13:09:16,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:16,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572855916] [2021-12-22 13:09:16,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572855916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:16,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:16,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:09:16,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709767274] [2021-12-22 13:09:16,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:16,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:09:16,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:09:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:09:16,420 INFO L87 Difference]: Start difference. First operand 28070 states and 41958 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:18,319 INFO L93 Difference]: Finished difference Result 54570 states and 81384 transitions. [2021-12-22 13:09:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:09:18,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-22 13:09:18,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:18,354 INFO L225 Difference]: With dead ends: 54570 [2021-12-22 13:09:18,354 INFO L226 Difference]: Without dead ends: 28072 [2021-12-22 13:09:18,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-22 13:09:18,383 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 3608 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:18,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3608 Valid, 2473 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:09:18,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28072 states. [2021-12-22 13:09:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28072 to 28070. [2021-12-22 13:09:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4857488955394043) internal successors, (41702), 28069 states have internal predecessors, (41702), 0 states have call successors, (0), 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 13:09:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41702 transitions. [2021-12-22 13:09:20,610 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41702 transitions. Word has length 108 [2021-12-22 13:09:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:20,610 INFO L470 AbstractCegarLoop]: Abstraction has 28070 states and 41702 transitions. [2021-12-22 13:09:20,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41702 transitions. [2021-12-22 13:09:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-22 13:09:20,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:20,612 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] [2021-12-22 13:09:20,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 13:09:20,612 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:20,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2021-12-22 13:09:20,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:20,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669448365] [2021-12-22 13:09:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:20,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:20,702 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 13:09:20,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:20,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669448365] [2021-12-22 13:09:20,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669448365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:20,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:20,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:09:20,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664279301] [2021-12-22 13:09:20,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:20,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:09:20,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:20,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:09:20,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:09:20,705 INFO L87 Difference]: Start difference. First operand 28070 states and 41702 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:22,517 INFO L93 Difference]: Finished difference Result 54568 states and 80871 transitions. [2021-12-22 13:09:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:09:22,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-22 13:09:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:22,553 INFO L225 Difference]: With dead ends: 54568 [2021-12-22 13:09:22,553 INFO L226 Difference]: Without dead ends: 28070 [2021-12-22 13:09:22,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:09:22,572 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 4752 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:22,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4752 Valid, 3123 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:09:22,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28070 states. [2021-12-22 13:09:24,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28070 to 28070. [2021-12-22 13:09:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.476628188684623) internal successors, (41446), 28069 states have internal predecessors, (41446), 0 states have call successors, (0), 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 13:09:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41446 transitions. [2021-12-22 13:09:24,510 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41446 transitions. Word has length 109 [2021-12-22 13:09:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:24,510 INFO L470 AbstractCegarLoop]: Abstraction has 28070 states and 41446 transitions. [2021-12-22 13:09:24,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41446 transitions. [2021-12-22 13:09:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-22 13:09:24,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:24,512 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] [2021-12-22 13:09:24,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 13:09:24,512 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2021-12-22 13:09:24,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:24,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132226013] [2021-12-22 13:09:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:24,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:24,594 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 13:09:24,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:24,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132226013] [2021-12-22 13:09:24,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132226013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:24,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:24,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:09:24,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649854314] [2021-12-22 13:09:24,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:24,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:09:24,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:24,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:09:24,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:09:24,597 INFO L87 Difference]: Start difference. First operand 28070 states and 41446 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:28,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:28,198 INFO L93 Difference]: Finished difference Result 47696 states and 69915 transitions. [2021-12-22 13:09:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 13:09:28,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-22 13:09:28,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:28,253 INFO L225 Difference]: With dead ends: 47696 [2021-12-22 13:09:28,253 INFO L226 Difference]: Without dead ends: 47694 [2021-12-22 13:09:28,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:09:28,268 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:28,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:28,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47694 states. [2021-12-22 13:09:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47694 to 28838. [2021-12-22 13:09:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28838 states, 28836 states have (on average 1.4594950755999445) internal successors, (42086), 28837 states have internal predecessors, (42086), 0 states have call successors, (0), 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 13:09:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28838 states to 28838 states and 42086 transitions. [2021-12-22 13:09:30,417 INFO L78 Accepts]: Start accepts. Automaton has 28838 states and 42086 transitions. Word has length 109 [2021-12-22 13:09:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:30,417 INFO L470 AbstractCegarLoop]: Abstraction has 28838 states and 42086 transitions. [2021-12-22 13:09:30,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:09:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 28838 states and 42086 transitions. [2021-12-22 13:09:30,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-22 13:09:30,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:30,419 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 13:09:30,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 13:09:30,419 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:30,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:30,419 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2021-12-22 13:09:30,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:30,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928328507] [2021-12-22 13:09:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:30,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:30,481 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 13:09:30,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:30,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928328507] [2021-12-22 13:09:30,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928328507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:30,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:30,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:30,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190398063] [2021-12-22 13:09:30,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:30,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:09:30,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:09:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:09:30,485 INFO L87 Difference]: Start difference. First operand 28838 states and 42086 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 13:09:33,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:33,373 INFO L93 Difference]: Finished difference Result 56493 states and 82540 transitions. [2021-12-22 13:09:33,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:09:33,374 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 13:09:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:33,421 INFO L225 Difference]: With dead ends: 56493 [2021-12-22 13:09:33,421 INFO L226 Difference]: Without dead ends: 41642 [2021-12-22 13:09:33,432 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 13:09:33,432 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:33,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:09:33,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41642 states. [2021-12-22 13:09:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41642 to 41640. [2021-12-22 13:09:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41640 states, 41638 states have (on average 1.4504058792449206) internal successors, (60392), 41639 states have internal predecessors, (60392), 0 states have call successors, (0), 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 13:09:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41640 states to 41640 states and 60392 transitions. [2021-12-22 13:09:36,774 INFO L78 Accepts]: Start accepts. Automaton has 41640 states and 60392 transitions. Word has length 110 [2021-12-22 13:09:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:36,775 INFO L470 AbstractCegarLoop]: Abstraction has 41640 states and 60392 transitions. [2021-12-22 13:09:36,775 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 13:09:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 41640 states and 60392 transitions. [2021-12-22 13:09:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-22 13:09:36,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:36,776 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:09:36,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 13:09:36,777 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:36,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:36,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2047202396, now seen corresponding path program 1 times [2021-12-22 13:09:36,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:36,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762884081] [2021-12-22 13:09:36,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:36,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:09:36,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:36,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762884081] [2021-12-22 13:09:36,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762884081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:36,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:36,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:09:36,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529149229] [2021-12-22 13:09:36,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:36,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:09:36,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:09:36,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:09:36,859 INFO L87 Difference]: Start difference. First operand 41640 states and 60392 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 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 13:09:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:09:43,198 INFO L93 Difference]: Finished difference Result 44685 states and 65357 transitions. [2021-12-22 13:09:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:09:43,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 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 13:09:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:09:43,247 INFO L225 Difference]: With dead ends: 44685 [2021-12-22 13:09:43,247 INFO L226 Difference]: Without dead ends: 43144 [2021-12-22 13:09:43,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:09:43,257 INFO L933 BasicCegarLoop]: 829 mSDtfsCounter, 881 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 4397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:09:43,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 1038 Invalid, 4397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-22 13:09:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43144 states. [2021-12-22 13:09:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43144 to 43142. [2021-12-22 13:09:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43142 states, 43140 states have (on average 1.4362772369031063) internal successors, (61961), 43141 states have internal predecessors, (61961), 0 states have call successors, (0), 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 13:09:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43142 states to 43142 states and 61961 transitions. [2021-12-22 13:09:46,505 INFO L78 Accepts]: Start accepts. Automaton has 43142 states and 61961 transitions. Word has length 119 [2021-12-22 13:09:46,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:09:46,505 INFO L470 AbstractCegarLoop]: Abstraction has 43142 states and 61961 transitions. [2021-12-22 13:09:46,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 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 13:09:46,506 INFO L276 IsEmpty]: Start isEmpty. Operand 43142 states and 61961 transitions. [2021-12-22 13:09:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-22 13:09:46,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:09:46,524 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:09:46,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 13:09:46,525 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:09:46,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:09:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2021-12-22 13:09:46,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:09:46,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341223444] [2021-12-22 13:09:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:09:46,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:09:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:09:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 13:09:46,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:09:46,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341223444] [2021-12-22 13:09:46,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341223444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:09:46,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:09:46,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:09:46,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87048595] [2021-12-22 13:09:46,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:09:46,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:09:46,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:09:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:09:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:09:46,649 INFO L87 Difference]: Start difference. First operand 43142 states and 61961 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)