./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/Problem05_label49+token_ring.07.cil-1.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 212f1e6cc1aae5a1223162e16d5bd8071b486da78643961fa0a66e81c45b8eae --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:45:48,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:45:48,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:45:48,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:45:48,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:45:48,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:45:48,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:45:48,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:45:48,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:45:48,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:45:48,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:45:48,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:45:48,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:45:48,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:45:48,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:45:48,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:45:48,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:45:48,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:45:48,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:45:48,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:45:48,859 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:45:48,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:45:48,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:45:48,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:45:48,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:45:48,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:45:48,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:45:48,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:45:48,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:45:48,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:45:48,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:45:48,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:45:48,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:45:48,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:45:48,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:45:48,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:45:48,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:45:48,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:45:48,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:45:48,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:45:48,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:45:48,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:45:48,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:45:48,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:45:48,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:45:48,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:45:48,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:45:48,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:45:48,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:45:48,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:45:48,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:45:48,912 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:45:48,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:45:48,913 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:45:48,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:45:48,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:45:48,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:45:48,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:45:48,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:45:48,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:45:48,914 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:45:48,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:45:48,915 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:45:48,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:45:48,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:45:48,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:45:48,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:45:48,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:45:48,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:45:48,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:45:48,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:45:48,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:45:48,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:45:48,917 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:45:48,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:45:48,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:45:48,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 212f1e6cc1aae5a1223162e16d5bd8071b486da78643961fa0a66e81c45b8eae [2022-07-22 19:45:49,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:45:49,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:45:49,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:45:49,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:45:49,126 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:45:49,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c [2022-07-22 19:45:49,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39eec428d/69e88d58005945bda35585868130db99/FLAG9454f7a34 [2022-07-22 19:45:50,047 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:45:50,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-1.c [2022-07-22 19:45:50,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39eec428d/69e88d58005945bda35585868130db99/FLAG9454f7a34 [2022-07-22 19:45:50,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39eec428d/69e88d58005945bda35585868130db99 [2022-07-22 19:45:50,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:45:50,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:45:50,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:45:50,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:45:50,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:45:50,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:45:50" (1/1) ... [2022-07-22 19:45:50,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730d01b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:50, skipping insertion in model container [2022-07-22 19:45:50,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:45:50" (1/1) ... [2022-07-22 19:45:50,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:45:50,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:45:51,884 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/Problem05_label49+token_ring.07.cil-1.c[380593,380606] [2022-07-22 19:45:51,919 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/Problem05_label49+token_ring.07.cil-1.c[383339,383352] [2022-07-22 19:45:52,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:45:52,125 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:45:52,901 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/Problem05_label49+token_ring.07.cil-1.c[380593,380606] [2022-07-22 19:45:52,907 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/Problem05_label49+token_ring.07.cil-1.c[383339,383352] [2022-07-22 19:45:52,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:45:53,013 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:45:53,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53 WrapperNode [2022-07-22 19:45:53,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:45:53,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:45:53,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:45:53,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:45:53,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:53,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:53,412 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2022-07-22 19:45:53,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:45:53,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:45:53,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:45:53,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:45:53,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:53,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:53,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:53,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:53,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:53,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:53,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:54,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:45:54,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:45:54,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:45:54,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:45:54,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (1/1) ... [2022-07-22 19:45:54,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:45:54,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:45:54,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 19:45:54,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 19:45:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:45:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:45:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:45:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:45:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:45:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:45:54,212 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:45:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:45:54,212 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:45:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:45:54,212 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:45:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:45:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:45:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:45:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:45:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:45:54,316 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:45:54,317 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:46:00,044 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:46:00,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:46:00,073 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-22 19:46:00,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:46:00 BoogieIcfgContainer [2022-07-22 19:46:00,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:46:00,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:46:00,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:46:00,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:46:00,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:45:50" (1/3) ... [2022-07-22 19:46:00,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56101df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:46:00, skipping insertion in model container [2022-07-22 19:46:00,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:53" (2/3) ... [2022-07-22 19:46:00,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56101df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:46:00, skipping insertion in model container [2022-07-22 19:46:00,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:46:00" (3/3) ... [2022-07-22 19:46:00,084 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.07.cil-1.c [2022-07-22 19:46:00,096 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:46:00,096 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:46:00,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:46:00,182 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2aa005da, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3dbeaac0 [2022-07-22 19:46:00,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:46:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-22 19:46:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:00,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:00,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:00,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2022-07-22 19:46:00,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:00,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038089479] [2022-07-22 19:46:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:00,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:00,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:00,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:00,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:00,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:00,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038089479] [2022-07-22 19:46:00,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038089479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:00,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:00,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:46:00,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770397030] [2022-07-22 19:46:00,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:00,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:46:00,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:00,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:46:00,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:46:00,612 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:01,737 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2022-07-22 19:46:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:46:01,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:01,765 INFO L225 Difference]: With dead ends: 4955 [2022-07-22 19:46:01,765 INFO L226 Difference]: Without dead ends: 2460 [2022-07-22 19:46:01,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:46:01,777 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12335 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16788 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:01,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 16788 Invalid, 508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 19:46:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2022-07-22 19:46:01,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2022-07-22 19:46:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-22 19:46:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2022-07-22 19:46:01,901 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2022-07-22 19:46:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:01,901 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2022-07-22 19:46:01,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2022-07-22 19:46:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:01,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:01,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:01,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:46:01,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:01,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:01,908 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2022-07-22 19:46:01,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:01,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251153507] [2022-07-22 19:46:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:01,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:02,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:02,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251153507] [2022-07-22 19:46:02,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251153507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:02,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:02,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:46:02,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498922136] [2022-07-22 19:46:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:02,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:46:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:46:02,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:46:02,133 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:03,819 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2022-07-22 19:46:03,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:46:03,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:03,834 INFO L225 Difference]: With dead ends: 3029 [2022-07-22 19:46:03,834 INFO L226 Difference]: Without dead ends: 2792 [2022-07-22 19:46:03,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:46:03,838 INFO L413 NwaCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16919 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:03,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4949 Valid, 16919 Invalid, 1381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:46:03,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2022-07-22 19:46:03,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2022-07-22 19:46:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-22 19:46:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2022-07-22 19:46:03,913 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2022-07-22 19:46:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:03,914 INFO L495 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2022-07-22 19:46:03,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2022-07-22 19:46:03,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:03,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:03,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:03,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:46:03,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:03,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2022-07-22 19:46:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:03,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465561759] [2022-07-22 19:46:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:04,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:04,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:04,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:04,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465561759] [2022-07-22 19:46:04,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465561759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:04,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:04,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820431014] [2022-07-22 19:46:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:04,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:04,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:04,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:04,135 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:06,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:06,145 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2022-07-22 19:46:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:46:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:06,160 INFO L225 Difference]: With dead ends: 3617 [2022-07-22 19:46:06,160 INFO L226 Difference]: Without dead ends: 3134 [2022-07-22 19:46:06,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:46:06,164 INFO L413 NwaCegarLoop]: 4607 mSDtfsCounter, 4944 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 21671 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:06,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4958 Valid, 21671 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:46:06,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2022-07-22 19:46:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2022-07-22 19:46:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-22 19:46:06,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2022-07-22 19:46:06,249 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2022-07-22 19:46:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:06,250 INFO L495 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2022-07-22 19:46:06,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2022-07-22 19:46:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:06,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:06,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:06,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:46:06,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:06,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2022-07-22 19:46:06,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:06,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276697005] [2022-07-22 19:46:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:06,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:06,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:06,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276697005] [2022-07-22 19:46:06,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276697005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:06,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:06,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900350579] [2022-07-22 19:46:06,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:06,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:06,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:06,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:06,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:06,370 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:08,502 INFO L93 Difference]: Finished difference Result 4483 states and 7682 transitions. [2022-07-22 19:46:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:46:08,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:08,520 INFO L225 Difference]: With dead ends: 4483 [2022-07-22 19:46:08,520 INFO L226 Difference]: Without dead ends: 3771 [2022-07-22 19:46:08,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:46:08,525 INFO L413 NwaCegarLoop]: 4599 mSDtfsCounter, 4941 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 21663 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:08,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4955 Valid, 21663 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:46:08,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2022-07-22 19:46:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3307. [2022-07-22 19:46:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3186 states have (on average 1.7602008788449466) internal successors, (5608), 3192 states have internal predecessors, (5608), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-07-22 19:46:08,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5791 transitions. [2022-07-22 19:46:08,670 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5791 transitions. Word has length 123 [2022-07-22 19:46:08,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:08,671 INFO L495 AbstractCegarLoop]: Abstraction has 3307 states and 5791 transitions. [2022-07-22 19:46:08,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:08,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5791 transitions. [2022-07-22 19:46:08,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:08,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:08,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:08,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:46:08,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:08,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:08,682 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2022-07-22 19:46:08,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:08,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456781305] [2022-07-22 19:46:08,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:08,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:08,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:08,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:08,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:08,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456781305] [2022-07-22 19:46:08,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456781305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:08,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:08,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:08,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082792950] [2022-07-22 19:46:08,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:08,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:08,823 INFO L87 Difference]: Start difference. First operand 3307 states and 5791 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:10,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:10,834 INFO L93 Difference]: Finished difference Result 6150 states and 10285 transitions. [2022-07-22 19:46:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:46:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:10,854 INFO L225 Difference]: With dead ends: 6150 [2022-07-22 19:46:10,854 INFO L226 Difference]: Without dead ends: 4979 [2022-07-22 19:46:10,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:46:10,861 INFO L413 NwaCegarLoop]: 4595 mSDtfsCounter, 4937 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4951 SdHoareTripleChecker+Valid, 21659 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:10,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4951 Valid, 21659 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 19:46:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2022-07-22 19:46:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4226. [2022-07-22 19:46:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4013 states have (on average 1.7139297283827561) internal successors, (6878), 4023 states have internal predecessors, (6878), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-07-22 19:46:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 7211 transitions. [2022-07-22 19:46:11,055 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 7211 transitions. Word has length 123 [2022-07-22 19:46:11,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:11,056 INFO L495 AbstractCegarLoop]: Abstraction has 4226 states and 7211 transitions. [2022-07-22 19:46:11,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 7211 transitions. [2022-07-22 19:46:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:11,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:11,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:11,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:46:11,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:11,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2022-07-22 19:46:11,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:11,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340680791] [2022-07-22 19:46:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:11,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:11,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:11,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340680791] [2022-07-22 19:46:11,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340680791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:11,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:11,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368196004] [2022-07-22 19:46:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:11,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:11,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:11,194 INFO L87 Difference]: Start difference. First operand 4226 states and 7211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:13,192 INFO L93 Difference]: Finished difference Result 9483 states and 15507 transitions. [2022-07-22 19:46:13,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:46:13,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:13,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:13,227 INFO L225 Difference]: With dead ends: 9483 [2022-07-22 19:46:13,228 INFO L226 Difference]: Without dead ends: 7393 [2022-07-22 19:46:13,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:46:13,239 INFO L413 NwaCegarLoop]: 4591 mSDtfsCounter, 4933 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21655 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:13,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4947 Valid, 21655 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:46:13,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2022-07-22 19:46:13,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6069. [2022-07-22 19:46:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 5672 states have (on average 1.6614950634696757) internal successors, (9424), 5690 states have internal predecessors, (9424), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-22 19:46:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10075 transitions. [2022-07-22 19:46:13,515 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10075 transitions. Word has length 123 [2022-07-22 19:46:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:13,515 INFO L495 AbstractCegarLoop]: Abstraction has 6069 states and 10075 transitions. [2022-07-22 19:46:13,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:13,516 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10075 transitions. [2022-07-22 19:46:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:13,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:13,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:13,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:46:13,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:13,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2022-07-22 19:46:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:13,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336346870] [2022-07-22 19:46:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:13,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:13,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:13,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:13,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:13,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336346870] [2022-07-22 19:46:13,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336346870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:13,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:13,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:13,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371363143] [2022-07-22 19:46:13,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:13,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:13,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:13,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:13,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:13,648 INFO L87 Difference]: Start difference. First operand 6069 states and 10075 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:15,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:15,719 INFO L93 Difference]: Finished difference Result 16148 states and 26009 transitions. [2022-07-22 19:46:15,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:46:15,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:15,767 INFO L225 Difference]: With dead ends: 16148 [2022-07-22 19:46:15,767 INFO L226 Difference]: Without dead ends: 12215 [2022-07-22 19:46:15,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:46:15,785 INFO L413 NwaCegarLoop]: 4585 mSDtfsCounter, 4932 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21649 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:15,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4946 Valid, 21649 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:46:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2022-07-22 19:46:16,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 9768. [2022-07-22 19:46:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6143507719649006) internal successors, (14534), 9037 states have internal predecessors, (14534), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-22 19:46:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15875 transitions. [2022-07-22 19:46:16,271 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15875 transitions. Word has length 123 [2022-07-22 19:46:16,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:16,272 INFO L495 AbstractCegarLoop]: Abstraction has 9768 states and 15875 transitions. [2022-07-22 19:46:16,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15875 transitions. [2022-07-22 19:46:16,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:16,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:16,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:16,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:46:16,283 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:16,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2022-07-22 19:46:16,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:16,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746521895] [2022-07-22 19:46:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:16,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:16,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:16,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:16,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746521895] [2022-07-22 19:46:16,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746521895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:16,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:16,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314273754] [2022-07-22 19:46:16,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:16,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:16,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:16,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:16,402 INFO L87 Difference]: Start difference. First operand 9768 states and 15875 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:17,648 INFO L93 Difference]: Finished difference Result 19942 states and 32204 transitions. [2022-07-22 19:46:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:46:17,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:17,695 INFO L225 Difference]: With dead ends: 19942 [2022-07-22 19:46:17,695 INFO L226 Difference]: Without dead ends: 12310 [2022-07-22 19:46:17,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:46:17,723 INFO L413 NwaCegarLoop]: 4350 mSDtfsCounter, 4776 mSDsluCounter, 12356 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16706 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:17,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4791 Valid, 16706 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 19:46:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2022-07-22 19:46:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 9768. [2022-07-22 19:46:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6106853271131845) internal successors, (14501), 9037 states have internal predecessors, (14501), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-22 19:46:18,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15842 transitions. [2022-07-22 19:46:18,172 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15842 transitions. Word has length 123 [2022-07-22 19:46:18,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:18,172 INFO L495 AbstractCegarLoop]: Abstraction has 9768 states and 15842 transitions. [2022-07-22 19:46:18,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:18,173 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15842 transitions. [2022-07-22 19:46:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:18,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:18,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:18,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:46:18,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:18,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2022-07-22 19:46:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:18,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912078239] [2022-07-22 19:46:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:18,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:18,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:18,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:18,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912078239] [2022-07-22 19:46:18,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912078239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:18,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:18,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:18,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658872437] [2022-07-22 19:46:18,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:18,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:18,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:18,301 INFO L87 Difference]: Start difference. First operand 9768 states and 15842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:21,711 INFO L93 Difference]: Finished difference Result 32836 states and 52097 transitions. [2022-07-22 19:46:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:46:21,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:21,790 INFO L225 Difference]: With dead ends: 32836 [2022-07-22 19:46:21,790 INFO L226 Difference]: Without dead ends: 25204 [2022-07-22 19:46:21,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:46:21,818 INFO L413 NwaCegarLoop]: 4569 mSDtfsCounter, 5211 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5233 SdHoareTripleChecker+Valid, 21625 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:21,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5233 Valid, 21625 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:46:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25204 states. [2022-07-22 19:46:22,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25204 to 17165. [2022-07-22 19:46:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 15696 states have (on average 1.5779179408766564) internal successors, (24767), 15762 states have internal predecessors, (24767), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2022-07-22 19:46:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 27586 transitions. [2022-07-22 19:46:22,745 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 27586 transitions. Word has length 123 [2022-07-22 19:46:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:22,746 INFO L495 AbstractCegarLoop]: Abstraction has 17165 states and 27586 transitions. [2022-07-22 19:46:22,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 27586 transitions. [2022-07-22 19:46:22,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:22,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:22,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:22,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:46:22,757 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:22,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:22,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2022-07-22 19:46:22,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:22,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940201656] [2022-07-22 19:46:22,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:22,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:22,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:22,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:22,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:22,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:22,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:22,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940201656] [2022-07-22 19:46:22,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940201656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:22,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:22,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599644205] [2022-07-22 19:46:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:22,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:22,861 INFO L87 Difference]: Start difference. First operand 17165 states and 27586 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:27,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:27,572 INFO L93 Difference]: Finished difference Result 61867 states and 98487 transitions. [2022-07-22 19:46:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:46:27,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:27,723 INFO L225 Difference]: With dead ends: 61867 [2022-07-22 19:46:27,723 INFO L226 Difference]: Without dead ends: 46838 [2022-07-22 19:46:27,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:46:27,770 INFO L413 NwaCegarLoop]: 4671 mSDtfsCounter, 4981 mSDsluCounter, 17053 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 21724 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:27,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4994 Valid, 21724 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:46:27,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46838 states. [2022-07-22 19:46:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46838 to 31602. [2022-07-22 19:46:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31602 states, 28757 states have (on average 1.5581945265500574) internal successors, (44809), 28887 states have internal predecessors, (44809), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2022-07-22 19:46:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31602 states to 31602 states and 51006 transitions. [2022-07-22 19:46:29,805 INFO L78 Accepts]: Start accepts. Automaton has 31602 states and 51006 transitions. Word has length 123 [2022-07-22 19:46:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:29,805 INFO L495 AbstractCegarLoop]: Abstraction has 31602 states and 51006 transitions. [2022-07-22 19:46:29,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 31602 states and 51006 transitions. [2022-07-22 19:46:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:29,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:29,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:29,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:46:29,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2022-07-22 19:46:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:29,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477352850] [2022-07-22 19:46:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:29,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:29,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:29,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:29,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:29,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477352850] [2022-07-22 19:46:29,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477352850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:29,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:29,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:29,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529783076] [2022-07-22 19:46:29,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:29,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:29,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:29,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:29,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:29,917 INFO L87 Difference]: Start difference. First operand 31602 states and 51006 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:37,586 INFO L93 Difference]: Finished difference Result 117782 states and 189717 transitions. [2022-07-22 19:46:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:46:37,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:37,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:37,914 INFO L225 Difference]: With dead ends: 117782 [2022-07-22 19:46:37,915 INFO L226 Difference]: Without dead ends: 88316 [2022-07-22 19:46:38,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:46:38,015 INFO L413 NwaCegarLoop]: 4559 mSDtfsCounter, 5131 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5153 SdHoareTripleChecker+Valid, 21615 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:38,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5153 Valid, 21615 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:46:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88316 states. [2022-07-22 19:46:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88316 to 60731. [2022-07-22 19:46:42,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60731 states, 55198 states have (on average 1.5483713178013696) internal successors, (85467), 55456 states have internal predecessors, (85467), 3733 states have call successors, (3733), 1542 states have call predecessors, (3733), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2022-07-22 19:46:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60731 states to 60731 states and 99750 transitions. [2022-07-22 19:46:42,310 INFO L78 Accepts]: Start accepts. Automaton has 60731 states and 99750 transitions. Word has length 123 [2022-07-22 19:46:42,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:42,310 INFO L495 AbstractCegarLoop]: Abstraction has 60731 states and 99750 transitions. [2022-07-22 19:46:42,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:42,311 INFO L276 IsEmpty]: Start isEmpty. Operand 60731 states and 99750 transitions. [2022-07-22 19:46:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 19:46:42,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:42,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:42,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:46:42,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:42,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2022-07-22 19:46:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:42,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743462625] [2022-07-22 19:46:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:42,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:42,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 19:46:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:42,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 19:46:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 19:46:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:42,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:42,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743462625] [2022-07-22 19:46:42,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743462625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:42,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:42,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730673397] [2022-07-22 19:46:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:42,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:42,473 INFO L87 Difference]: Start difference. First operand 60731 states and 99750 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:46:56,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:56,429 INFO L93 Difference]: Finished difference Result 228077 states and 375643 transitions. [2022-07-22 19:46:56,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:46:56,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-22 19:46:56,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:57,195 INFO L225 Difference]: With dead ends: 228077 [2022-07-22 19:46:57,195 INFO L226 Difference]: Without dead ends: 169482 [2022-07-22 19:46:57,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:46:57,341 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 5091 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5113 SdHoareTripleChecker+Valid, 21610 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:57,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5113 Valid, 21610 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 19:46:57,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169482 states.