./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/systemc/transmitter.09.cil.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 3945fa4b58cef50cb4b44b435a699812e99a1f6375664d08551274c6b50bee45 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:17:13,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:17:13,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:17:13,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:17:13,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:17:13,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:17:13,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:17:13,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:17:13,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:17:13,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:17:13,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:17:13,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:17:13,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:17:13,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:17:13,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:17:13,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:17:13,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:17:13,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:17:13,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:17:13,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:17:13,883 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:17:13,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:17:13,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:17:13,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:17:13,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:17:13,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:17:13,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:17:13,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:17:13,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:17:13,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:17:13,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:17:13,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:17:13,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:17:13,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:17:13,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:17:13,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:17:13,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:17:13,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:17:13,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:17:13,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:17:13,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:17:13,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:17:13,942 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:17:13,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:17:13,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:17:13,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:17:13,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:17:13,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:17:13,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:17:13,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:17:13,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:17:13,981 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:17:13,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:17:13,982 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:17:13,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:17:13,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:17:13,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:17:13,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:17:13,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:17:13,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:17:13,987 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:17:13,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:17:13,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:17:13,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:17:13,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:17:13,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:17:13,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:17:13,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:17:13,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:17:13,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:17:13,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:17:13,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:17:13,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:17:13,990 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:17:13,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:17:13,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:17:13,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3945fa4b58cef50cb4b44b435a699812e99a1f6375664d08551274c6b50bee45 [2022-07-13 18:17:14,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:17:14,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:17:14,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:17:14,406 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:17:14,407 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:17:14,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.09.cil.c [2022-07-13 18:17:14,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a89bd4f/b0fdf625d2f04af7966cdfe42ae240a7/FLAGbd25a9b32 [2022-07-13 18:17:15,123 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:17:15,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.09.cil.c [2022-07-13 18:17:15,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a89bd4f/b0fdf625d2f04af7966cdfe42ae240a7/FLAGbd25a9b32 [2022-07-13 18:17:15,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a89bd4f/b0fdf625d2f04af7966cdfe42ae240a7 [2022-07-13 18:17:15,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:17:15,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:17:15,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:17:15,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:17:15,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:17:15,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d71179f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15, skipping insertion in model container [2022-07-13 18:17:15,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:17:15,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:17:15,443 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/systemc/transmitter.09.cil.c[706,719] [2022-07-13 18:17:15,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:17:15,583 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:17:15,612 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/systemc/transmitter.09.cil.c[706,719] [2022-07-13 18:17:15,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:17:15,749 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:17:15,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15 WrapperNode [2022-07-13 18:17:15,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:17:15,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:17:15,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:17:15,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:17:15,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,841 INFO L137 Inliner]: procedures = 46, calls = 57, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 663 [2022-07-13 18:17:15,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:17:15,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:17:15,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:17:15,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:17:15,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:17:15,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:17:15,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:17:15,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:17:15,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (1/1) ... [2022-07-13 18:17:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:17:15,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:17:16,041 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) [2022-07-13 18:17:16,095 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 [2022-07-13 18:17:16,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:17:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 18:17:16,147 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 18:17:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 18:17:16,147 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 18:17:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 18:17:16,151 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 18:17:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 18:17:16,152 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 18:17:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 18:17:16,152 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 18:17:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:17:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 18:17:16,152 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 18:17:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:17:16,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:17:16,332 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:17:16,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:17:17,565 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:17:17,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:17:17,584 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-13 18:17:17,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:17:17 BoogieIcfgContainer [2022-07-13 18:17:17,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:17:17,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:17:17,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:17:17,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:17:17,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:17:15" (1/3) ... [2022-07-13 18:17:17,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66131a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:17:17, skipping insertion in model container [2022-07-13 18:17:17,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:17:15" (2/3) ... [2022-07-13 18:17:17,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66131a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:17:17, skipping insertion in model container [2022-07-13 18:17:17,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:17:17" (3/3) ... [2022-07-13 18:17:17,607 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.09.cil.c [2022-07-13 18:17:17,620 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:17:17,620 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:17:17,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:17:17,710 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@723ffdbc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4bccf757 [2022-07-13 18:17:17,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:17:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 303 states, 273 states have (on average 1.652014652014652) internal successors, (451), 275 states have internal predecessors, (451), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-13 18:17:17,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:17,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:17,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:17,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:17,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:17,794 INFO L85 PathProgramCache]: Analyzing trace with hash 832159514, now seen corresponding path program 1 times [2022-07-13 18:17:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:17,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971766502] [2022-07-13 18:17:17,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:18,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:18,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971766502] [2022-07-13 18:17:18,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971766502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:18,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:18,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:17:18,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091539793] [2022-07-13 18:17:18,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:18,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:17:18,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:17:18,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:17:18,406 INFO L87 Difference]: Start difference. First operand has 303 states, 273 states have (on average 1.652014652014652) internal successors, (451), 275 states have internal predecessors, (451), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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) [2022-07-13 18:17:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:19,909 INFO L93 Difference]: Finished difference Result 706 states and 1164 transitions. [2022-07-13 18:17:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:17:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:19,934 INFO L225 Difference]: With dead ends: 706 [2022-07-13 18:17:19,935 INFO L226 Difference]: Without dead ends: 405 [2022-07-13 18:17:19,945 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 [2022-07-13 18:17:19,949 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 795 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:19,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 829 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 18:17:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-13 18:17:20,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 298. [2022-07-13 18:17:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.553903345724907) internal successors, (418), 270 states have internal predecessors, (418), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-13 18:17:20,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 462 transitions. [2022-07-13 18:17:20,059 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 462 transitions. Word has length 151 [2022-07-13 18:17:20,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:20,060 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 462 transitions. [2022-07-13 18:17:20,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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) [2022-07-13 18:17:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 462 transitions. [2022-07-13 18:17:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:20,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:20,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:20,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:17:20,074 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:20,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash 493871964, now seen corresponding path program 1 times [2022-07-13 18:17:20,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:20,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869440628] [2022-07-13 18:17:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:20,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:20,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:20,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869440628] [2022-07-13 18:17:20,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869440628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:20,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:20,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:17:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658300294] [2022-07-13 18:17:20,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:20,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:17:20,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:20,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:17:20,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:17:20,389 INFO L87 Difference]: Start difference. First operand 298 states and 462 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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) [2022-07-13 18:17:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:22,226 INFO L93 Difference]: Finished difference Result 689 states and 1084 transitions. [2022-07-13 18:17:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 18:17:22,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:22,232 INFO L225 Difference]: With dead ends: 689 [2022-07-13 18:17:22,232 INFO L226 Difference]: Without dead ends: 405 [2022-07-13 18:17:22,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:17:22,238 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 782 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:22,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 815 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 18:17:22,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-13 18:17:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 298. [2022-07-13 18:17:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 269 states have (on average 1.550185873605948) internal successors, (417), 270 states have internal predecessors, (417), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-13 18:17:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 461 transitions. [2022-07-13 18:17:22,286 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 461 transitions. Word has length 151 [2022-07-13 18:17:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:22,288 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 461 transitions. [2022-07-13 18:17:22,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 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) [2022-07-13 18:17:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 461 transitions. [2022-07-13 18:17:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:22,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:22,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:22,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:17:22,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash 75983262, now seen corresponding path program 1 times [2022-07-13 18:17:22,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:22,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21581803] [2022-07-13 18:17:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:22,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:22,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:22,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:22,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:22,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:22,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:22,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21581803] [2022-07-13 18:17:22,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21581803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:22,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:22,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:17:22,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534946320] [2022-07-13 18:17:22,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:22,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:17:22,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:22,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:17:22,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:17:22,590 INFO L87 Difference]: Start difference. First operand 298 states and 461 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2022-07-13 18:17:25,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:25,352 INFO L93 Difference]: Finished difference Result 1085 states and 1730 transitions. [2022-07-13 18:17:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:17:25,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:25,357 INFO L225 Difference]: With dead ends: 1085 [2022-07-13 18:17:25,357 INFO L226 Difference]: Without dead ends: 804 [2022-07-13 18:17:25,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:17:25,360 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 1181 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:25,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 1289 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 18:17:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-07-13 18:17:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 590. [2022-07-13 18:17:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 537 states have (on average 1.5623836126629422) internal successors, (839), 539 states have internal predecessors, (839), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-13 18:17:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 920 transitions. [2022-07-13 18:17:25,469 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 920 transitions. Word has length 151 [2022-07-13 18:17:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:25,469 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 920 transitions. [2022-07-13 18:17:25,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 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) [2022-07-13 18:17:25,470 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 920 transitions. [2022-07-13 18:17:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:25,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:25,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:25,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:17:25,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:25,473 INFO L85 PathProgramCache]: Analyzing trace with hash -952893281, now seen corresponding path program 1 times [2022-07-13 18:17:25,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:25,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17741961] [2022-07-13 18:17:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:25,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:25,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:25,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:25,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:25,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:25,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17741961] [2022-07-13 18:17:25,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17741961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:25,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:25,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:25,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341863014] [2022-07-13 18:17:25,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:25,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:25,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:25,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:25,798 INFO L87 Difference]: Start difference. First operand 590 states and 920 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:29,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:29,410 INFO L93 Difference]: Finished difference Result 1925 states and 3043 transitions. [2022-07-13 18:17:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:29,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:29,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:29,419 INFO L225 Difference]: With dead ends: 1925 [2022-07-13 18:17:29,420 INFO L226 Difference]: Without dead ends: 1352 [2022-07-13 18:17:29,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:29,423 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 1290 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2992 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:29,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 2417 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2992 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 18:17:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-07-13 18:17:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 862. [2022-07-13 18:17:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 785 states have (on average 1.5554140127388536) internal successors, (1221), 788 states have internal predecessors, (1221), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-13 18:17:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1338 transitions. [2022-07-13 18:17:29,519 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1338 transitions. Word has length 151 [2022-07-13 18:17:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:29,520 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1338 transitions. [2022-07-13 18:17:29,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1338 transitions. [2022-07-13 18:17:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:29,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:29,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:29,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:17:29,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:29,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1497765855, now seen corresponding path program 1 times [2022-07-13 18:17:29,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:29,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110254127] [2022-07-13 18:17:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:29,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:29,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110254127] [2022-07-13 18:17:29,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110254127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:29,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:29,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:29,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052483879] [2022-07-13 18:17:29,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:29,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:29,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:29,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:29,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:29,768 INFO L87 Difference]: Start difference. First operand 862 states and 1338 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:33,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:33,602 INFO L93 Difference]: Finished difference Result 2963 states and 4675 transitions. [2022-07-13 18:17:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:33,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:33,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:33,615 INFO L225 Difference]: With dead ends: 2963 [2022-07-13 18:17:33,615 INFO L226 Difference]: Without dead ends: 2118 [2022-07-13 18:17:33,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:33,622 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 1287 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2409 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:33,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 2409 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 18:17:33,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2022-07-13 18:17:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1407. [2022-07-13 18:17:33,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1282 states have (on average 1.5491419656786272) internal successors, (1986), 1287 states have internal predecessors, (1986), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-13 18:17:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 2179 transitions. [2022-07-13 18:17:33,755 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 2179 transitions. Word has length 151 [2022-07-13 18:17:33,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:33,756 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 2179 transitions. [2022-07-13 18:17:33,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:33,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 2179 transitions. [2022-07-13 18:17:33,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:33,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:33,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:33,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:17:33,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:33,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:33,760 INFO L85 PathProgramCache]: Analyzing trace with hash -822605729, now seen corresponding path program 1 times [2022-07-13 18:17:33,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:33,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406067838] [2022-07-13 18:17:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:33,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:33,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:33,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:33,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406067838] [2022-07-13 18:17:33,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406067838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:33,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:33,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:33,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330746196] [2022-07-13 18:17:33,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:33,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:33,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:33,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:33,965 INFO L87 Difference]: Start difference. First operand 1407 states and 2179 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:37,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:37,991 INFO L93 Difference]: Finished difference Result 4962 states and 7800 transitions. [2022-07-13 18:17:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:37,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:37,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:38,011 INFO L225 Difference]: With dead ends: 4962 [2022-07-13 18:17:38,011 INFO L226 Difference]: Without dead ends: 3572 [2022-07-13 18:17:38,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:38,016 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 1283 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:38,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 2405 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 18:17:38,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2022-07-13 18:17:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2498. [2022-07-13 18:17:38,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2277 states have (on average 1.5441370223978919) internal successors, (3516), 2286 states have internal predecessors, (3516), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-13 18:17:38,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3867 transitions. [2022-07-13 18:17:38,380 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3867 transitions. Word has length 151 [2022-07-13 18:17:38,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:38,380 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 3867 transitions. [2022-07-13 18:17:38,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:38,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3867 transitions. [2022-07-13 18:17:38,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:38,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:38,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:38,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:17:38,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:38,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1770657695, now seen corresponding path program 1 times [2022-07-13 18:17:38,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:38,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143064475] [2022-07-13 18:17:38,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:38,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:38,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:38,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:38,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:38,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:38,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:38,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143064475] [2022-07-13 18:17:38,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143064475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:38,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:38,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:38,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971457183] [2022-07-13 18:17:38,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:38,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:38,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:38,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:38,694 INFO L87 Difference]: Start difference. First operand 2498 states and 3867 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:42,277 INFO L93 Difference]: Finished difference Result 8959 states and 14066 transitions. [2022-07-13 18:17:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:42,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:42,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:42,340 INFO L225 Difference]: With dead ends: 8959 [2022-07-13 18:17:42,340 INFO L226 Difference]: Without dead ends: 6478 [2022-07-13 18:17:42,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:42,351 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 1282 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:42,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 2399 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2981 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 18:17:42,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6478 states. [2022-07-13 18:17:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6478 to 4685. [2022-07-13 18:17:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4272 states have (on average 1.5407303370786516) internal successors, (6582), 4289 states have internal predecessors, (6582), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-13 18:17:42,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 7267 transitions. [2022-07-13 18:17:42,953 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 7267 transitions. Word has length 151 [2022-07-13 18:17:42,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:42,954 INFO L495 AbstractCegarLoop]: Abstraction has 4685 states and 7267 transitions. [2022-07-13 18:17:42,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:42,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 7267 transitions. [2022-07-13 18:17:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:42,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:42,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:42,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:17:42,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:42,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1939537951, now seen corresponding path program 1 times [2022-07-13 18:17:42,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:42,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792787826] [2022-07-13 18:17:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:42,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:43,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:43,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:43,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792787826] [2022-07-13 18:17:43,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792787826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:43,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:43,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842302072] [2022-07-13 18:17:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:43,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:43,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:43,096 INFO L87 Difference]: Start difference. First operand 4685 states and 7267 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:46,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:46,932 INFO L93 Difference]: Finished difference Result 16937 states and 26628 transitions. [2022-07-13 18:17:46,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:46,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:47,062 INFO L225 Difference]: With dead ends: 16937 [2022-07-13 18:17:47,062 INFO L226 Difference]: Without dead ends: 12269 [2022-07-13 18:17:47,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:47,105 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 1277 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2961 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:47,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1292 Valid, 2391 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2961 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 18:17:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12269 states. [2022-07-13 18:17:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12269 to 9089. [2022-07-13 18:17:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9089 states, 8292 states have (on average 1.539556198745779) internal successors, (12766), 8325 states have internal predecessors, (12766), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-13 18:17:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9089 states to 9089 states and 14173 transitions. [2022-07-13 18:17:47,931 INFO L78 Accepts]: Start accepts. Automaton has 9089 states and 14173 transitions. Word has length 151 [2022-07-13 18:17:47,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:47,931 INFO L495 AbstractCegarLoop]: Abstraction has 9089 states and 14173 transitions. [2022-07-13 18:17:47,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:47,932 INFO L276 IsEmpty]: Start isEmpty. Operand 9089 states and 14173 transitions. [2022-07-13 18:17:47,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:47,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:47,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:47,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:17:47,947 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1509879645, now seen corresponding path program 1 times [2022-07-13 18:17:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:47,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642598483] [2022-07-13 18:17:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:47,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:48,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:48,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:48,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:48,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642598483] [2022-07-13 18:17:48,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642598483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:48,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:48,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:48,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688428198] [2022-07-13 18:17:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:48,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:48,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:48,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:48,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:48,252 INFO L87 Difference]: Start difference. First operand 9089 states and 14173 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:50,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:50,864 INFO L93 Difference]: Finished difference Result 21358 states and 33834 transitions. [2022-07-13 18:17:50,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:17:50,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:50,981 INFO L225 Difference]: With dead ends: 21358 [2022-07-13 18:17:50,981 INFO L226 Difference]: Without dead ends: 12286 [2022-07-13 18:17:51,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:17:51,042 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 904 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:51,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1181 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 18:17:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12286 states. [2022-07-13 18:17:52,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12286 to 9089. [2022-07-13 18:17:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9089 states, 8292 states have (on average 1.5355764592378196) internal successors, (12733), 8325 states have internal predecessors, (12733), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-13 18:17:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9089 states to 9089 states and 14140 transitions. [2022-07-13 18:17:52,528 INFO L78 Accepts]: Start accepts. Automaton has 9089 states and 14140 transitions. Word has length 151 [2022-07-13 18:17:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:17:52,539 INFO L495 AbstractCegarLoop]: Abstraction has 9089 states and 14140 transitions. [2022-07-13 18:17:52,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9089 states and 14140 transitions. [2022-07-13 18:17:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:17:52,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:17:52,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:17:52,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:17:52,574 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:17:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:17:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash 803283039, now seen corresponding path program 1 times [2022-07-13 18:17:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:17:52,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996434832] [2022-07-13 18:17:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:17:52,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:17:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:17:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:17:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:52,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:17:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:17:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:17:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:17:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:17:52,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:17:52,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996434832] [2022-07-13 18:17:52,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996434832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:17:52,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:17:52,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:17:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155813449] [2022-07-13 18:17:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:17:52,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:17:52,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:17:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:17:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:17:52,717 INFO L87 Difference]: Start difference. First operand 9089 states and 14140 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:17:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:17:58,164 INFO L93 Difference]: Finished difference Result 32893 states and 51776 transitions. [2022-07-13 18:17:58,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:17:58,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:17:58,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:17:58,339 INFO L225 Difference]: With dead ends: 32893 [2022-07-13 18:17:58,339 INFO L226 Difference]: Without dead ends: 23821 [2022-07-13 18:17:58,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:17:58,381 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 1269 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 3010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 18:17:58,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 2380 Invalid, 3010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 18:17:58,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23821 states. [2022-07-13 18:17:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23821 to 17959. [2022-07-13 18:17:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17959 states, 16394 states have (on average 1.5337928510430645) internal successors, (25145), 16459 states have internal predecessors, (25145), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-07-13 18:18:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17959 states to 17959 states and 28158 transitions. [2022-07-13 18:18:00,045 INFO L78 Accepts]: Start accepts. Automaton has 17959 states and 28158 transitions. Word has length 151 [2022-07-13 18:18:00,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:00,045 INFO L495 AbstractCegarLoop]: Abstraction has 17959 states and 28158 transitions. [2022-07-13 18:18:00,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:18:00,046 INFO L276 IsEmpty]: Start isEmpty. Operand 17959 states and 28158 transitions. [2022-07-13 18:18:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:18:00,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:00,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:00,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:18:00,072 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:00,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:00,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1750320925, now seen corresponding path program 1 times [2022-07-13 18:18:00,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:00,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71541071] [2022-07-13 18:18:00,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:00,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:18:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:00,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:18:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:18:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:00,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:18:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:18:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:18:00,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:00,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71541071] [2022-07-13 18:18:00,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71541071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:00,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:00,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:18:00,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280287002] [2022-07-13 18:18:00,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:00,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:18:00,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:18:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:18:00,205 INFO L87 Difference]: Start difference. First operand 17959 states and 28158 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:18:07,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:07,080 INFO L93 Difference]: Finished difference Result 64873 states and 102944 transitions. [2022-07-13 18:18:07,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:18:07,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:18:07,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:07,357 INFO L225 Difference]: With dead ends: 64873 [2022-07-13 18:18:07,357 INFO L226 Difference]: Without dead ends: 46931 [2022-07-13 18:18:07,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 18:18:07,427 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 1268 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2926 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 3002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:07,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 2375 Invalid, 3002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2926 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 18:18:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46931 states. [2022-07-13 18:18:11,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46931 to 35760. [2022-07-13 18:18:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35760 states, 32659 states have (on average 1.5327781009828838) internal successors, (50059), 32788 states have internal predecessors, (50059), 2198 states have call successors, (2198), 774 states have call predecessors, (2198), 902 states have return successors, (4513), 2325 states have call predecessors, (4513), 2198 states have call successors, (4513) [2022-07-13 18:18:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35760 states to 35760 states and 56770 transitions. [2022-07-13 18:18:11,245 INFO L78 Accepts]: Start accepts. Automaton has 35760 states and 56770 transitions. Word has length 151 [2022-07-13 18:18:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:11,245 INFO L495 AbstractCegarLoop]: Abstraction has 35760 states and 56770 transitions. [2022-07-13 18:18:11,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:18:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 35760 states and 56770 transitions. [2022-07-13 18:18:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:18:11,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:11,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:11,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:18:11,385 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:11,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:11,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1682812769, now seen corresponding path program 1 times [2022-07-13 18:18:11,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:11,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752352799] [2022-07-13 18:18:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:11,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:18:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:18:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:18:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:18:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:18:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:18:11,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:11,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752352799] [2022-07-13 18:18:11,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752352799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:11,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:11,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:18:11,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972291826] [2022-07-13 18:18:11,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:11,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:18:11,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:11,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:18:11,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:18:11,541 INFO L87 Difference]: Start difference. First operand 35760 states and 56770 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:18:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:18:27,089 INFO L93 Difference]: Finished difference Result 144704 states and 231192 transitions. [2022-07-13 18:18:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 18:18:27,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:18:27,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:18:28,530 INFO L225 Difference]: With dead ends: 144704 [2022-07-13 18:18:28,547 INFO L226 Difference]: Without dead ends: 108961 [2022-07-13 18:18:28,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:18:28,723 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1350 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 3016 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:18:28,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 2360 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3016 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 18:18:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108961 states. [2022-07-13 18:18:36,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108961 to 70977. [2022-07-13 18:18:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70977 states, 64932 states have (on average 1.5353446682683423) internal successors, (99693), 65189 states have internal predecessors, (99693), 4246 states have call successors, (4246), 1542 states have call predecessors, (4246), 1798 states have return successors, (11063), 4501 states have call predecessors, (11063), 4246 states have call successors, (11063) [2022-07-13 18:18:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70977 states to 70977 states and 115002 transitions. [2022-07-13 18:18:37,088 INFO L78 Accepts]: Start accepts. Automaton has 70977 states and 115002 transitions. Word has length 151 [2022-07-13 18:18:37,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:18:37,089 INFO L495 AbstractCegarLoop]: Abstraction has 70977 states and 115002 transitions. [2022-07-13 18:18:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:18:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 70977 states and 115002 transitions. [2022-07-13 18:18:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-13 18:18:37,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:18:37,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:18:37,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:18:37,229 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:18:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:18:37,230 INFO L85 PathProgramCache]: Analyzing trace with hash 561745629, now seen corresponding path program 1 times [2022-07-13 18:18:37,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:18:37,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368787670] [2022-07-13 18:18:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:18:37,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:18:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:37,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:18:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:37,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 18:18:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 18:18:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 18:18:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 18:18:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:18:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:18:37,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:18:37,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368787670] [2022-07-13 18:18:37,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368787670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:18:37,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:18:37,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:18:37,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308874686] [2022-07-13 18:18:37,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:18:37,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:18:37,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:18:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:18:37,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:18:37,380 INFO L87 Difference]: Start difference. First operand 70977 states and 115002 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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) [2022-07-13 18:19:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:19:03,118 INFO L93 Difference]: Finished difference Result 283375 states and 461710 transitions. [2022-07-13 18:19:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 18:19:03,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 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 151 [2022-07-13 18:19:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:19:04,141 INFO L225 Difference]: With dead ends: 283375 [2022-07-13 18:19:04,141 INFO L226 Difference]: Without dead ends: 212415 [2022-07-13 18:19:04,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:19:04,325 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 1557 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:19:04,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 2231 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 18:19:04,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212415 states.