./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.01.cil-1.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/combinations/Problem05_label46+token_ring.01.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 352e453d29e3ec1e2ba2c1191212dcec23d3b6a54e25ae049f0e79e2798ccd2e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:01:54,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:01:54,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:01:54,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:01:54,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:01:54,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:01:54,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:01:54,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:01:54,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:01:54,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:01:54,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:01:54,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:01:54,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:01:54,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:01:54,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:01:54,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:01:54,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:01:54,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:01:54,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:01:54,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:01:54,197 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:01:54,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:01:54,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:01:54,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:01:54,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:01:54,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:01:54,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:01:54,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:01:54,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:01:54,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:01:54,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:01:54,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:01:54,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:01:54,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:01:54,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:01:54,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:01:54,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:01:54,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:01:54,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:01:54,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:01:54,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:01:54,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:01:54,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:01:54,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:01:54,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:01:54,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:01:54,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:01:54,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:01:54,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:01:54,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:01:54,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:01:54,248 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:01:54,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:01:54,249 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:01:54,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:01:54,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:01:54,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:01:54,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:01:54,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:01:54,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:01:54,250 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:01:54,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:01:54,251 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:01:54,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:01:54,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:01:54,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:01:54,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:01:54,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:01:54,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:01:54,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:01:54,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:01:54,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:01:54,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:01:54,254 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:01:54,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:01:54,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:01:54,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 352e453d29e3ec1e2ba2c1191212dcec23d3b6a54e25ae049f0e79e2798ccd2e [2022-07-13 20:01:54,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:01:54,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:01:54,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:01:54,555 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:01:54,556 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:01:54,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.01.cil-1.c [2022-07-13 20:01:54,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2547dcc/4cb556a51e694a1396a2561e71fd6bc2/FLAGa56806698 [2022-07-13 20:01:55,462 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:01:55,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.01.cil-1.c [2022-07-13 20:01:55,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2547dcc/4cb556a51e694a1396a2561e71fd6bc2/FLAGa56806698 [2022-07-13 20:01:55,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2547dcc/4cb556a51e694a1396a2561e71fd6bc2 [2022-07-13 20:01:55,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:01:55,989 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:01:55,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:01:55,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:01:55,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:01:55,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:01:55" (1/1) ... [2022-07-13 20:01:55,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112f27a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:55, skipping insertion in model container [2022-07-13 20:01:55,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:01:55" (1/1) ... [2022-07-13 20:01:56,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:01:56,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:01:57,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.01.cil-1.c[382357,382370] [2022-07-13 20:01:57,728 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.01.cil-1.c[383339,383352] [2022-07-13 20:01:57,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:01:57,886 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:01:58,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.01.cil-1.c[382357,382370] [2022-07-13 20:01:58,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.01.cil-1.c[383339,383352] [2022-07-13 20:01:58,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:01:58,752 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:01:58,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58 WrapperNode [2022-07-13 20:01:58,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:01:58,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:01:58,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:01:58,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:01:58,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:58,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:59,300 INFO L137 Inliner]: procedures = 46, calls = 44, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 12561 [2022-07-13 20:01:59,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:01:59,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:01:59,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:01:59,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:01:59,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:59,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:59,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:59,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:59,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:59,684 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:59,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:59,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:01:59,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:01:59,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:01:59,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:01:59,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (1/1) ... [2022-07-13 20:01:59,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:01:59,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:01:59,913 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 20:01:59,969 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 20:02:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:02:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:02:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:02:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:02:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:02:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:02:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:02:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:02:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:02:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:02:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:02:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:02:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:02:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:02:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:02:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:02:00,178 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:02:00,179 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:02:06,086 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:02:06,112 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:02:06,113 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 20:02:06,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:02:06 BoogieIcfgContainer [2022-07-13 20:02:06,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:02:06,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:02:06,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:02:06,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:02:06,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:01:55" (1/3) ... [2022-07-13 20:02:06,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ca0ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:02:06, skipping insertion in model container [2022-07-13 20:02:06,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:01:58" (2/3) ... [2022-07-13 20:02:06,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ca0ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:02:06, skipping insertion in model container [2022-07-13 20:02:06,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:02:06" (3/3) ... [2022-07-13 20:02:06,128 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.01.cil-1.c [2022-07-13 20:02:06,142 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:02:06,143 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:02:06,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:02:06,232 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@495b38f7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3cafe5bd [2022-07-13 20:02:06,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:02:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand has 2290 states, 2266 states have (on average 1.8587819947043247) internal successors, (4212), 2269 states have internal predecessors, (4212), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-13 20:02:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 20:02:06,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:06,256 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] [2022-07-13 20:02:06,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:06,261 INFO L85 PathProgramCache]: Analyzing trace with hash -36301034, now seen corresponding path program 1 times [2022-07-13 20:02:06,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:06,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472387794] [2022-07-13 20:02:06,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:06,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:06,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:06,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:06,571 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 20:02:06,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:06,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472387794] [2022-07-13 20:02:06,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472387794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:06,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:06,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:02:06,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068470335] [2022-07-13 20:02:06,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:06,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:02:06,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:02:06,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:02:06,624 INFO L87 Difference]: Start difference. First operand has 2290 states, 2266 states have (on average 1.8587819947043247) internal successors, (4212), 2269 states have internal predecessors, (4212), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 20:02:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:07,288 INFO L93 Difference]: Finished difference Result 4705 states and 8678 transitions. [2022-07-13 20:02:07,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:02:07,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 57 [2022-07-13 20:02:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:07,327 INFO L225 Difference]: With dead ends: 4705 [2022-07-13 20:02:07,327 INFO L226 Difference]: Without dead ends: 2354 [2022-07-13 20:02:07,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:02:07,343 INFO L413 NwaCegarLoop]: 4187 mSDtfsCounter, 4313 mSDsluCounter, 12342 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4321 SdHoareTripleChecker+Valid, 16529 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:07,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4321 Valid, 16529 Invalid, 482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:02:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2022-07-13 20:02:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 2313. [2022-07-13 20:02:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2273 states have (on average 1.8376594808622966) internal successors, (4177), 2276 states have internal predecessors, (4177), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2022-07-13 20:02:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 4230 transitions. [2022-07-13 20:02:07,500 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 4230 transitions. Word has length 57 [2022-07-13 20:02:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:07,500 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 4230 transitions. [2022-07-13 20:02:07,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 20:02:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 4230 transitions. [2022-07-13 20:02:07,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 20:02:07,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:07,503 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] [2022-07-13 20:02:07,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:02:07,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:07,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:07,505 INFO L85 PathProgramCache]: Analyzing trace with hash -948253030, now seen corresponding path program 1 times [2022-07-13 20:02:07,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:07,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144412243] [2022-07-13 20:02:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:07,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:07,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:07,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:07,629 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 20:02:07,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:07,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144412243] [2022-07-13 20:02:07,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144412243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:07,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:07,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:02:07,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330827044] [2022-07-13 20:02:07,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:07,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:02:07,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:07,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:02:07,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:02:07,632 INFO L87 Difference]: Start difference. First operand 2313 states and 4230 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 20:02:08,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:08,254 INFO L93 Difference]: Finished difference Result 2645 states and 4704 transitions. [2022-07-13 20:02:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:02:08,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 57 [2022-07-13 20:02:08,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:08,267 INFO L225 Difference]: With dead ends: 2645 [2022-07-13 20:02:08,267 INFO L226 Difference]: Without dead ends: 2462 [2022-07-13 20:02:08,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:02:08,271 INFO L413 NwaCegarLoop]: 4176 mSDtfsCounter, 4231 mSDsluCounter, 16299 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4239 SdHoareTripleChecker+Valid, 20475 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:08,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4239 Valid, 20475 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:02:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2022-07-13 20:02:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 2398. [2022-07-13 20:02:08,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2341 states have (on average 1.8248611704399829) internal successors, (4272), 2345 states have internal predecessors, (4272), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (40), 36 states have call predecessors, (40), 35 states have call successors, (40) [2022-07-13 20:02:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4347 transitions. [2022-07-13 20:02:08,328 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4347 transitions. Word has length 57 [2022-07-13 20:02:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:08,328 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4347 transitions. [2022-07-13 20:02:08,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 20:02:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4347 transitions. [2022-07-13 20:02:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 20:02:08,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:08,331 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] [2022-07-13 20:02:08,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:02:08,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1297326424, now seen corresponding path program 1 times [2022-07-13 20:02:08,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:08,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326840319] [2022-07-13 20:02:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:08,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:08,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:08,401 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 20:02:08,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:08,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326840319] [2022-07-13 20:02:08,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326840319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:08,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:08,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:02:08,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428393043] [2022-07-13 20:02:08,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:08,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:02:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:08,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:02:08,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:02:08,403 INFO L87 Difference]: Start difference. First operand 2398 states and 4347 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 20:02:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:09,063 INFO L93 Difference]: Finished difference Result 2981 states and 5171 transitions. [2022-07-13 20:02:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:02:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 57 [2022-07-13 20:02:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:09,076 INFO L225 Difference]: With dead ends: 2981 [2022-07-13 20:02:09,076 INFO L226 Difference]: Without dead ends: 2713 [2022-07-13 20:02:09,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:02:09,080 INFO L413 NwaCegarLoop]: 4166 mSDtfsCounter, 4285 mSDsluCounter, 16291 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4295 SdHoareTripleChecker+Valid, 20457 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:09,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4295 Valid, 20457 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:02:09,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-07-13 20:02:09,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2563. [2022-07-13 20:02:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2474 states have (on average 1.8023443815683104) internal successors, (4459), 2480 states have internal predecessors, (4459), 53 states have call successors, (53), 30 states have call predecessors, (53), 34 states have return successors, (66), 56 states have call predecessors, (66), 53 states have call successors, (66) [2022-07-13 20:02:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4578 transitions. [2022-07-13 20:02:09,151 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4578 transitions. Word has length 57 [2022-07-13 20:02:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:09,152 INFO L495 AbstractCegarLoop]: Abstraction has 2563 states and 4578 transitions. [2022-07-13 20:02:09,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 20:02:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4578 transitions. [2022-07-13 20:02:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 20:02:09,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:09,154 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] [2022-07-13 20:02:09,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:02:09,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash 399933146, now seen corresponding path program 1 times [2022-07-13 20:02:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:09,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717397051] [2022-07-13 20:02:09,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:09,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:09,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:09,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:09,311 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 20:02:09,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717397051] [2022-07-13 20:02:09,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717397051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:09,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:09,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:02:09,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195675603] [2022-07-13 20:02:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:09,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:02:09,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:09,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:02:09,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:02:09,314 INFO L87 Difference]: Start difference. First operand 2563 states and 4578 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 20:02:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:09,944 INFO L93 Difference]: Finished difference Result 3503 states and 5902 transitions. [2022-07-13 20:02:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:02:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 57 [2022-07-13 20:02:09,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:09,958 INFO L225 Difference]: With dead ends: 3503 [2022-07-13 20:02:09,958 INFO L226 Difference]: Without dead ends: 3070 [2022-07-13 20:02:09,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:02:09,962 INFO L413 NwaCegarLoop]: 4167 mSDtfsCounter, 4228 mSDsluCounter, 16273 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4235 SdHoareTripleChecker+Valid, 20440 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:09,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4235 Valid, 20440 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:02:09,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2022-07-13 20:02:10,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2862. [2022-07-13 20:02:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2715 states have (on average 1.7661141804788214) internal successors, (4795), 2725 states have internal predecessors, (4795), 85 states have call successors, (85), 52 states have call predecessors, (85), 60 states have return successors, (120), 92 states have call predecessors, (120), 85 states have call successors, (120) [2022-07-13 20:02:10,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 5000 transitions. [2022-07-13 20:02:10,048 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 5000 transitions. Word has length 57 [2022-07-13 20:02:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:10,048 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 5000 transitions. [2022-07-13 20:02:10,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 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 20:02:10,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 5000 transitions. [2022-07-13 20:02:10,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 20:02:10,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:10,050 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] [2022-07-13 20:02:10,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:02:10,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:10,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash 648079640, now seen corresponding path program 1 times [2022-07-13 20:02:10,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:10,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828620378] [2022-07-13 20:02:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:10,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,110 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 20:02:10,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:10,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828620378] [2022-07-13 20:02:10,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828620378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:10,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:10,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:02:10,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055742413] [2022-07-13 20:02:10,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:10,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:02:10,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:02:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:02:10,113 INFO L87 Difference]: Start difference. First operand 2862 states and 5000 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 20:02:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:10,651 INFO L93 Difference]: Finished difference Result 4199 states and 6894 transitions. [2022-07-13 20:02:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:02:10,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 57 [2022-07-13 20:02:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:10,667 INFO L225 Difference]: With dead ends: 4199 [2022-07-13 20:02:10,667 INFO L226 Difference]: Without dead ends: 3468 [2022-07-13 20:02:10,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 20:02:10,677 INFO L413 NwaCegarLoop]: 4213 mSDtfsCounter, 4340 mSDsluCounter, 12156 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4363 SdHoareTripleChecker+Valid, 16369 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:10,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4363 Valid, 16369 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 20:02:10,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2022-07-13 20:02:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3263. [2022-07-13 20:02:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 3033 states have (on average 1.7213979558193209) internal successors, (5221), 3052 states have internal predecessors, (5221), 134 states have call successors, (134), 82 states have call predecessors, (134), 94 states have return successors, (179), 136 states have call predecessors, (179), 134 states have call successors, (179) [2022-07-13 20:02:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 5534 transitions. [2022-07-13 20:02:10,779 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 5534 transitions. Word has length 57 [2022-07-13 20:02:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:10,779 INFO L495 AbstractCegarLoop]: Abstraction has 3263 states and 5534 transitions. [2022-07-13 20:02:10,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 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 20:02:10,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 5534 transitions. [2022-07-13 20:02:10,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 20:02:10,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:10,784 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:10,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:02:10,784 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:10,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:10,785 INFO L85 PathProgramCache]: Analyzing trace with hash 12281189, now seen corresponding path program 1 times [2022-07-13 20:02:10,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:10,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9941415] [2022-07-13 20:02:10,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:10,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 20:02:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 20:02:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-13 20:02:10,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:10,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9941415] [2022-07-13 20:02:10,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9941415] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:02:10,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65362954] [2022-07-13 20:02:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:10,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:10,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:02:10,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:02:10,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:02:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:02:11,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:02:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 20:02:11,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:02:11,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65362954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:11,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:02:11,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:02:11,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75113240] [2022-07-13 20:02:11,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:11,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:02:11,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:02:11,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:11,050 INFO L87 Difference]: Start difference. First operand 3263 states and 5534 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:11,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:11,157 INFO L93 Difference]: Finished difference Result 5442 states and 8608 transitions. [2022-07-13 20:02:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:02:11,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2022-07-13 20:02:11,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:11,180 INFO L225 Difference]: With dead ends: 5442 [2022-07-13 20:02:11,180 INFO L226 Difference]: Without dead ends: 4311 [2022-07-13 20:02:11,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:11,187 INFO L413 NwaCegarLoop]: 4217 mSDtfsCounter, 114 mSDsluCounter, 4096 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 8313 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:11,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 8313 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:02:11,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-07-13 20:02:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 4311. [2022-07-13 20:02:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 3872 states have (on average 1.6417871900826446) internal successors, (6357), 3904 states have internal predecessors, (6357), 253 states have call successors, (253), 160 states have call predecessors, (253), 184 states have return successors, (376), 262 states have call predecessors, (376), 253 states have call successors, (376) [2022-07-13 20:02:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 6986 transitions. [2022-07-13 20:02:11,327 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 6986 transitions. Word has length 92 [2022-07-13 20:02:11,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:11,329 INFO L495 AbstractCegarLoop]: Abstraction has 4311 states and 6986 transitions. [2022-07-13 20:02:11,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:11,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 6986 transitions. [2022-07-13 20:02:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-13 20:02:11,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:11,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:02:11,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:02:11,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 20:02:11,564 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:11,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:11,564 INFO L85 PathProgramCache]: Analyzing trace with hash -788169551, now seen corresponding path program 1 times [2022-07-13 20:02:11,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:11,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761761940] [2022-07-13 20:02:11,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:11,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 20:02:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 20:02:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 20:02:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 20:02:11,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:11,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761761940] [2022-07-13 20:02:11,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761761940] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:02:11,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556581179] [2022-07-13 20:02:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:11,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:11,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:02:11,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:02:11,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:02:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:11,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:02:11,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:02:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 20:02:11,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:02:11,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556581179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:11,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:02:11,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 20:02:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150677115] [2022-07-13 20:02:11,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:11,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:02:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:02:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:11,970 INFO L87 Difference]: Start difference. First operand 4311 states and 6986 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 20:02:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:12,148 INFO L93 Difference]: Finished difference Result 8527 states and 12855 transitions. [2022-07-13 20:02:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:02:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 118 [2022-07-13 20:02:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:12,196 INFO L225 Difference]: With dead ends: 8527 [2022-07-13 20:02:12,196 INFO L226 Difference]: Without dead ends: 6351 [2022-07-13 20:02:12,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:12,208 INFO L413 NwaCegarLoop]: 4117 mSDtfsCounter, 4026 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4026 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:12,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4026 Valid, 4237 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:02:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6351 states. [2022-07-13 20:02:12,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6351 to 6293. [2022-07-13 20:02:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6293 states, 5460 states have (on average 1.5576923076923077) internal successors, (8505), 5521 states have internal predecessors, (8505), 473 states have call successors, (473), 310 states have call predecessors, (473), 358 states have return successors, (688), 477 states have call predecessors, (688), 473 states have call successors, (688) [2022-07-13 20:02:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6293 states to 6293 states and 9666 transitions. [2022-07-13 20:02:12,476 INFO L78 Accepts]: Start accepts. Automaton has 6293 states and 9666 transitions. Word has length 118 [2022-07-13 20:02:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:12,477 INFO L495 AbstractCegarLoop]: Abstraction has 6293 states and 9666 transitions. [2022-07-13 20:02:12,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 20:02:12,478 INFO L276 IsEmpty]: Start isEmpty. Operand 6293 states and 9666 transitions. [2022-07-13 20:02:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-13 20:02:12,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:12,489 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:02:12,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 20:02:12,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-13 20:02:12,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:12,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1080279049, now seen corresponding path program 1 times [2022-07-13 20:02:12,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:12,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658425401] [2022-07-13 20:02:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:12,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 20:02:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 20:02:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 20:02:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:12,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 20:02:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,810 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-13 20:02:12,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:12,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658425401] [2022-07-13 20:02:12,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658425401] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:02:12,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830365674] [2022-07-13 20:02:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:12,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:12,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:02:12,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:02:12,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 20:02:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:12,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 20:02:12,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:02:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-13 20:02:12,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:02:12,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830365674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:12,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:02:12,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:02:12,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927179740] [2022-07-13 20:02:12,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:12,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:02:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:02:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:12,959 INFO L87 Difference]: Start difference. First operand 6293 states and 9666 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 20:02:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:13,149 INFO L93 Difference]: Finished difference Result 9515 states and 14095 transitions. [2022-07-13 20:02:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:02:13,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 134 [2022-07-13 20:02:13,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:13,174 INFO L225 Difference]: With dead ends: 9515 [2022-07-13 20:02:13,174 INFO L226 Difference]: Without dead ends: 6621 [2022-07-13 20:02:13,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:13,186 INFO L413 NwaCegarLoop]: 4120 mSDtfsCounter, 4059 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4059 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:13,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4059 Valid, 4248 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:02:13,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6621 states. [2022-07-13 20:02:13,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6621 to 6583. [2022-07-13 20:02:13,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6583 states, 5718 states have (on average 1.5318293109478838) internal successors, (8759), 5779 states have internal predecessors, (8759), 479 states have call successors, (479), 336 states have call predecessors, (479), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2022-07-13 20:02:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6583 states to 6583 states and 9958 transitions. [2022-07-13 20:02:13,521 INFO L78 Accepts]: Start accepts. Automaton has 6583 states and 9958 transitions. Word has length 134 [2022-07-13 20:02:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:13,521 INFO L495 AbstractCegarLoop]: Abstraction has 6583 states and 9958 transitions. [2022-07-13 20:02:13,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-13 20:02:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 6583 states and 9958 transitions. [2022-07-13 20:02:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 20:02:13,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:13,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:02:13,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 20:02:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:13,760 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 703612430, now seen corresponding path program 1 times [2022-07-13 20:02:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:13,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966944012] [2022-07-13 20:02:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:13,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:02:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:02:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 20:02:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 20:02:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 20:02:13,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:13,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966944012] [2022-07-13 20:02:13,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966944012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:02:13,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880603435] [2022-07-13 20:02:13,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:13,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:13,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:02:13,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:02:13,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 20:02:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:13,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 20:02:13,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:02:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 20:02:14,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:02:14,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880603435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:14,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:02:14,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:02:14,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987755954] [2022-07-13 20:02:14,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:14,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:02:14,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:14,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:02:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:14,024 INFO L87 Difference]: Start difference. First operand 6583 states and 9958 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 20:02:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:14,225 INFO L93 Difference]: Finished difference Result 8950 states and 13283 transitions. [2022-07-13 20:02:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:02:14,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 135 [2022-07-13 20:02:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:14,252 INFO L225 Difference]: With dead ends: 8950 [2022-07-13 20:02:14,252 INFO L226 Difference]: Without dead ends: 6617 [2022-07-13 20:02:14,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:14,265 INFO L413 NwaCegarLoop]: 4205 mSDtfsCounter, 99 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 8292 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:14,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 8292 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:02:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2022-07-13 20:02:14,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 6559. [2022-07-13 20:02:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6559 states, 5694 states have (on average 1.5175623463294696) internal successors, (8641), 5755 states have internal predecessors, (8641), 479 states have call successors, (479), 336 states have call predecessors, (479), 384 states have return successors, (720), 483 states have call predecessors, (720), 479 states have call successors, (720) [2022-07-13 20:02:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 9840 transitions. [2022-07-13 20:02:14,532 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 9840 transitions. Word has length 135 [2022-07-13 20:02:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:14,534 INFO L495 AbstractCegarLoop]: Abstraction has 6559 states and 9840 transitions. [2022-07-13 20:02:14,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 20:02:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 9840 transitions. [2022-07-13 20:02:14,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 20:02:14,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:14,549 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:02:14,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 20:02:14,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:14,763 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:14,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:14,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1285829934, now seen corresponding path program 1 times [2022-07-13 20:02:14,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:14,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741208282] [2022-07-13 20:02:14,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:14,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:02:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:02:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 20:02:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 20:02:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 20:02:14,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:14,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741208282] [2022-07-13 20:02:14,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741208282] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:02:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201470650] [2022-07-13 20:02:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:14,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:14,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:02:14,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:02:14,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 20:02:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:14,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 20:02:14,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:02:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 20:02:15,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:02:15,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201470650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:15,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:02:15,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 20:02:15,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675155916] [2022-07-13 20:02:15,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:15,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:02:15,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:15,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:02:15,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:15,005 INFO L87 Difference]: Start difference. First operand 6559 states and 9840 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 20:02:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:15,204 INFO L93 Difference]: Finished difference Result 9831 states and 14294 transitions. [2022-07-13 20:02:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:02:15,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 135 [2022-07-13 20:02:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:15,230 INFO L225 Difference]: With dead ends: 9831 [2022-07-13 20:02:15,230 INFO L226 Difference]: Without dead ends: 5941 [2022-07-13 20:02:15,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:02:15,245 INFO L413 NwaCegarLoop]: 4100 mSDtfsCounter, 4077 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 4124 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:15,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 4124 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:02:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2022-07-13 20:02:15,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 5711. [2022-07-13 20:02:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5711 states, 5012 states have (on average 1.5157621707901037) internal successors, (7597), 5057 states have internal predecessors, (7597), 391 states have call successors, (391), 274 states have call predecessors, (391), 306 states have return successors, (510), 387 states have call predecessors, (510), 391 states have call successors, (510) [2022-07-13 20:02:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5711 states to 5711 states and 8498 transitions. [2022-07-13 20:02:15,574 INFO L78 Accepts]: Start accepts. Automaton has 5711 states and 8498 transitions. Word has length 135 [2022-07-13 20:02:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:15,575 INFO L495 AbstractCegarLoop]: Abstraction has 5711 states and 8498 transitions. [2022-07-13 20:02:15,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-13 20:02:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 5711 states and 8498 transitions. [2022-07-13 20:02:15,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 20:02:15,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:15,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:02:15,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 20:02:15,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 20:02:15,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash -371269117, now seen corresponding path program 1 times [2022-07-13 20:02:15,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:15,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266975261] [2022-07-13 20:02:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:02:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:02:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 20:02:15,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 20:02:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 20:02:15,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:15,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266975261] [2022-07-13 20:02:15,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266975261] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:02:15,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677463442] [2022-07-13 20:02:15,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:15,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:15,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:02:15,917 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:02:15,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 20:02:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 20:02:16,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:02:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 20:02:16,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:02:16,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677463442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:16,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:02:16,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-13 20:02:16,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184746749] [2022-07-13 20:02:16,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:16,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:02:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:16,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:02:16,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 20:02:16,119 INFO L87 Difference]: Start difference. First operand 5711 states and 8498 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:16,365 INFO L93 Difference]: Finished difference Result 7117 states and 10335 transitions. [2022-07-13 20:02:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:02:16,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-07-13 20:02:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:16,380 INFO L225 Difference]: With dead ends: 7117 [2022-07-13 20:02:16,381 INFO L226 Difference]: Without dead ends: 4791 [2022-07-13 20:02:16,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:02:16,389 INFO L413 NwaCegarLoop]: 4078 mSDtfsCounter, 4094 mSDsluCounter, 8053 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 12131 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:16,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 12131 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:02:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2022-07-13 20:02:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 4779. [2022-07-13 20:02:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4262 states have (on average 1.544580009385265) internal successors, (6583), 4289 states have internal predecessors, (6583), 295 states have call successors, (295), 204 states have call predecessors, (295), 220 states have return successors, (354), 289 states have call predecessors, (354), 295 states have call successors, (354) [2022-07-13 20:02:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 7232 transitions. [2022-07-13 20:02:16,550 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 7232 transitions. Word has length 136 [2022-07-13 20:02:16,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:16,550 INFO L495 AbstractCegarLoop]: Abstraction has 4779 states and 7232 transitions. [2022-07-13 20:02:16,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 7232 transitions. [2022-07-13 20:02:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 20:02:16,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:16,555 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:02:16,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 20:02:16,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:16,780 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:16,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1678411515, now seen corresponding path program 1 times [2022-07-13 20:02:16,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:16,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073374435] [2022-07-13 20:02:16,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:16,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:02:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:02:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 20:02:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 20:02:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,873 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 20:02:16,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:16,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073374435] [2022-07-13 20:02:16,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073374435] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:02:16,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816512100] [2022-07-13 20:02:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:16,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:16,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:02:16,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:02:16,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 20:02:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:16,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 20:02:16,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:02:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 20:02:17,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:02:17,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816512100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:17,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:02:17,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-13 20:02:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811279835] [2022-07-13 20:02:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:17,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:02:17,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:02:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 20:02:17,051 INFO L87 Difference]: Start difference. First operand 4779 states and 7232 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:17,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:17,379 INFO L93 Difference]: Finished difference Result 7083 states and 10147 transitions. [2022-07-13 20:02:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:02:17,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-07-13 20:02:17,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:17,394 INFO L225 Difference]: With dead ends: 7083 [2022-07-13 20:02:17,395 INFO L226 Difference]: Without dead ends: 4732 [2022-07-13 20:02:17,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-13 20:02:17,403 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 4115 mSDsluCounter, 8048 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4123 SdHoareTripleChecker+Valid, 12138 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:17,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4123 Valid, 12138 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 20:02:17,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2022-07-13 20:02:17,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 3773. [2022-07-13 20:02:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 3468 states have (on average 1.6000576701268743) internal successors, (5549), 3483 states have internal predecessors, (5549), 173 states have call successors, (173), 122 states have call predecessors, (173), 130 states have return successors, (203), 169 states have call predecessors, (203), 173 states have call successors, (203) [2022-07-13 20:02:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5925 transitions. [2022-07-13 20:02:17,541 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5925 transitions. Word has length 136 [2022-07-13 20:02:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:17,541 INFO L495 AbstractCegarLoop]: Abstraction has 3773 states and 5925 transitions. [2022-07-13 20:02:17,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5925 transitions. [2022-07-13 20:02:17,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 20:02:17,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:17,545 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:02:17,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 20:02:17,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:17,761 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:17,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:17,761 INFO L85 PathProgramCache]: Analyzing trace with hash 219085251, now seen corresponding path program 1 times [2022-07-13 20:02:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:17,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225330808] [2022-07-13 20:02:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:02:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:02:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 20:02:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 20:02:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-13 20:02:17,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225330808] [2022-07-13 20:02:17,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225330808] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:02:17,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417883194] [2022-07-13 20:02:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:17,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:17,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:02:17,877 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:02:17,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 20:02:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:17,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 20:02:17,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:02:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-13 20:02:18,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:02:18,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417883194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:18,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:02:18,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-13 20:02:18,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482617215] [2022-07-13 20:02:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:18,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:02:18,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:18,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:02:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:02:18,003 INFO L87 Difference]: Start difference. First operand 3773 states and 5925 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:18,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:18,188 INFO L93 Difference]: Finished difference Result 4900 states and 7289 transitions. [2022-07-13 20:02:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:02:18,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-07-13 20:02:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:18,199 INFO L225 Difference]: With dead ends: 4900 [2022-07-13 20:02:18,199 INFO L226 Difference]: Without dead ends: 3258 [2022-07-13 20:02:18,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:02:18,206 INFO L413 NwaCegarLoop]: 4090 mSDtfsCounter, 48 mSDsluCounter, 12279 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 16369 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:18,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 16369 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:02:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2022-07-13 20:02:18,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 3222. [2022-07-13 20:02:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 3024 states have (on average 1.6537698412698412) internal successors, (5001), 3035 states have internal predecessors, (5001), 110 states have call successors, (110), 79 states have call predecessors, (110), 86 states have return successors, (121), 108 states have call predecessors, (121), 110 states have call successors, (121) [2022-07-13 20:02:18,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 5232 transitions. [2022-07-13 20:02:18,343 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 5232 transitions. Word has length 136 [2022-07-13 20:02:18,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:18,344 INFO L495 AbstractCegarLoop]: Abstraction has 3222 states and 5232 transitions. [2022-07-13 20:02:18,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 5232 transitions. [2022-07-13 20:02:18,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 20:02:18,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:18,347 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:02:18,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 20:02:18,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 20:02:18,563 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 731116351, now seen corresponding path program 1 times [2022-07-13 20:02:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:18,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057530040] [2022-07-13 20:02:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:18,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:02:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:02:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 20:02:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 20:02:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 20:02:18,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057530040] [2022-07-13 20:02:18,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057530040] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:02:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368398169] [2022-07-13 20:02:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:18,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:02:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:02:18,660 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:02:18,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 20:02:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:18,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 20:02:18,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:02:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 20:02:18,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 20:02:18,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368398169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:18,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 20:02:18,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-13 20:02:18,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053109633] [2022-07-13 20:02:18,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:18,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:02:18,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:18,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:02:18,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:02:18,785 INFO L87 Difference]: Start difference. First operand 3222 states and 5232 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:18,936 INFO L93 Difference]: Finished difference Result 4341 states and 6571 transitions. [2022-07-13 20:02:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:02:18,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 136 [2022-07-13 20:02:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:18,946 INFO L225 Difference]: With dead ends: 4341 [2022-07-13 20:02:18,946 INFO L226 Difference]: Without dead ends: 3250 [2022-07-13 20:02:18,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:02:18,952 INFO L413 NwaCegarLoop]: 4089 mSDtfsCounter, 10 mSDsluCounter, 12266 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16355 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:18,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 16355 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:02:18,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2022-07-13 20:02:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 3234. [2022-07-13 20:02:19,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3036 states have (on average 1.6442687747035574) internal successors, (4992), 3047 states have internal predecessors, (4992), 110 states have call successors, (110), 79 states have call predecessors, (110), 86 states have return successors, (121), 108 states have call predecessors, (121), 110 states have call successors, (121) [2022-07-13 20:02:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5223 transitions. [2022-07-13 20:02:19,067 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5223 transitions. Word has length 136 [2022-07-13 20:02:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:19,067 INFO L495 AbstractCegarLoop]: Abstraction has 3234 states and 5223 transitions. [2022-07-13 20:02:19,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 20:02:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5223 transitions. [2022-07-13 20:02:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-13 20:02:19,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:19,072 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:19,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 20:02:19,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 20:02:19,291 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash -26178757, now seen corresponding path program 1 times [2022-07-13 20:02:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484978481] [2022-07-13 20:02:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:19,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:02:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:02:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 20:02:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 20:02:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-13 20:02:19,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:19,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484978481] [2022-07-13 20:02:19,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484978481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:19,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:19,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:02:19,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372372947] [2022-07-13 20:02:19,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:19,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:02:19,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:02:19,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:02:19,425 INFO L87 Difference]: Start difference. First operand 3234 states and 5223 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-13 20:02:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:20,019 INFO L93 Difference]: Finished difference Result 4191 states and 6295 transitions. [2022-07-13 20:02:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 20:02:20,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 136 [2022-07-13 20:02:20,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:20,031 INFO L225 Difference]: With dead ends: 4191 [2022-07-13 20:02:20,031 INFO L226 Difference]: Without dead ends: 4189 [2022-07-13 20:02:20,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-13 20:02:20,034 INFO L413 NwaCegarLoop]: 4160 mSDtfsCounter, 4428 mSDsluCounter, 12146 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4451 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:20,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4451 Valid, 16306 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 20:02:20,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2022-07-13 20:02:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 3610. [2022-07-13 20:02:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3346 states have (on average 1.5971309025702332) internal successors, (5344), 3361 states have internal predecessors, (5344), 144 states have call successors, (144), 103 states have call predecessors, (144), 118 states have return successors, (163), 146 states have call predecessors, (163), 144 states have call successors, (163) [2022-07-13 20:02:20,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 5651 transitions. [2022-07-13 20:02:20,236 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 5651 transitions. Word has length 136 [2022-07-13 20:02:20,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:20,236 INFO L495 AbstractCegarLoop]: Abstraction has 3610 states and 5651 transitions. [2022-07-13 20:02:20,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-13 20:02:20,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 5651 transitions. [2022-07-13 20:02:20,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-13 20:02:20,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:20,240 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:02:20,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 20:02:20,241 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:20,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:20,241 INFO L85 PathProgramCache]: Analyzing trace with hash -970573154, now seen corresponding path program 2 times [2022-07-13 20:02:20,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:20,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249485116] [2022-07-13 20:02:20,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:20,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:02:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 20:02:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 20:02:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 20:02:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 20:02:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 20:02:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 20:02:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 20:02:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 20:02:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 20:02:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 20:02:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 20:02:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 20:02:20,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:20,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249485116] [2022-07-13 20:02:20,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249485116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:20,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:20,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:02:20,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294437562] [2022-07-13 20:02:20,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:20,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:02:20,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:20,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:02:20,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:02:20,328 INFO L87 Difference]: Start difference. First operand 3610 states and 5651 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-13 20:02:20,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:20,970 INFO L93 Difference]: Finished difference Result 5333 states and 7624 transitions. [2022-07-13 20:02:20,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 20:02:20,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 175 [2022-07-13 20:02:20,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:20,976 INFO L225 Difference]: With dead ends: 5333 [2022-07-13 20:02:20,976 INFO L226 Difference]: Without dead ends: 2123 [2022-07-13 20:02:20,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:02:20,982 INFO L413 NwaCegarLoop]: 4120 mSDtfsCounter, 4539 mSDsluCounter, 12130 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4554 SdHoareTripleChecker+Valid, 16250 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:20,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4554 Valid, 16250 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 20:02:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-07-13 20:02:21,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2123. [2022-07-13 20:02:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 1.8656927426955703) internal successors, (3959), 2122 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:21,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3959 transitions. [2022-07-13 20:02:21,018 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3959 transitions. Word has length 175 [2022-07-13 20:02:21,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:21,018 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 3959 transitions. [2022-07-13 20:02:21,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 4 states have internal predecessors, (92), 5 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-13 20:02:21,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3959 transitions. [2022-07-13 20:02:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1692 [2022-07-13 20:02:21,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:21,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:21,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 20:02:21,083 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:21,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash 414186075, now seen corresponding path program 1 times [2022-07-13 20:02:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:21,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099522868] [2022-07-13 20:02:21,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:21,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:22,628 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 20:02:22,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:22,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099522868] [2022-07-13 20:02:22,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099522868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:22,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:22,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:02:22,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575470273] [2022-07-13 20:02:22,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:22,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:02:22,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:22,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:02:22,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:02:22,632 INFO L87 Difference]: Start difference. First operand 2123 states and 3959 transitions. Second operand has 4 states, 4 states have (on average 422.75) internal successors, (1691), 3 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:33,946 INFO L93 Difference]: Finished difference Result 9399 states and 17961 transitions. [2022-07-13 20:02:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:02:33,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 422.75) internal successors, (1691), 3 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1691 [2022-07-13 20:02:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:33,965 INFO L225 Difference]: With dead ends: 9399 [2022-07-13 20:02:33,965 INFO L226 Difference]: Without dead ends: 7279 [2022-07-13 20:02:33,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:02:33,969 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 4172 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 10332 mSolverCounterSat, 5681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 16013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5681 IncrementalHoareTripleChecker+Valid, 10332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:33,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4172 Valid, 1608 Invalid, 16013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5681 Valid, 10332 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-07-13 20:02:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7279 states. [2022-07-13 20:02:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7279 to 5607. [2022-07-13 20:02:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5607 states, 5606 states have (on average 1.527827327863004) internal successors, (8565), 5606 states have internal predecessors, (8565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5607 states to 5607 states and 8565 transitions. [2022-07-13 20:02:34,067 INFO L78 Accepts]: Start accepts. Automaton has 5607 states and 8565 transitions. Word has length 1691 [2022-07-13 20:02:34,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:34,069 INFO L495 AbstractCegarLoop]: Abstraction has 5607 states and 8565 transitions. [2022-07-13 20:02:34,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 422.75) internal successors, (1691), 3 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5607 states and 8565 transitions. [2022-07-13 20:02:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1812 [2022-07-13 20:02:34,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:34,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:34,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 20:02:34,177 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2008541871, now seen corresponding path program 1 times [2022-07-13 20:02:34,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:34,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138725014] [2022-07-13 20:02:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:34,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 20:02:34,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:34,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138725014] [2022-07-13 20:02:34,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138725014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:34,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:34,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:02:34,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645071791] [2022-07-13 20:02:34,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:34,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:02:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:02:34,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:02:34,786 INFO L87 Difference]: Start difference. First operand 5607 states and 8565 transitions. Second operand has 3 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 2 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:39,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:39,820 INFO L93 Difference]: Finished difference Result 14650 states and 23316 transitions. [2022-07-13 20:02:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:02:39,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 2 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1811 [2022-07-13 20:02:39,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:39,847 INFO L225 Difference]: With dead ends: 14650 [2022-07-13 20:02:39,847 INFO L226 Difference]: Without dead ends: 9046 [2022-07-13 20:02:39,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:02:39,860 INFO L413 NwaCegarLoop]: 1752 mSDtfsCounter, 2322 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 4836 mSolverCounterSat, 2059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2322 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 6895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2059 IncrementalHoareTripleChecker+Valid, 4836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:39,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2322 Valid, 1947 Invalid, 6895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2059 Valid, 4836 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-13 20:02:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9046 states. [2022-07-13 20:02:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9046 to 9045. [2022-07-13 20:02:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9045 states, 9044 states have (on average 1.4606368863334807) internal successors, (13210), 9044 states have internal predecessors, (13210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9045 states to 9045 states and 13210 transitions. [2022-07-13 20:02:40,051 INFO L78 Accepts]: Start accepts. Automaton has 9045 states and 13210 transitions. Word has length 1811 [2022-07-13 20:02:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:40,052 INFO L495 AbstractCegarLoop]: Abstraction has 9045 states and 13210 transitions. [2022-07-13 20:02:40,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 600.6666666666666) internal successors, (1802), 2 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 9045 states and 13210 transitions. [2022-07-13 20:02:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1815 [2022-07-13 20:02:40,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:40,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:40,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 20:02:40,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:40,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash -98117404, now seen corresponding path program 1 times [2022-07-13 20:02:40,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:40,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076700598] [2022-07-13 20:02:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:40,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 20:02:40,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:40,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076700598] [2022-07-13 20:02:40,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076700598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:40,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:40,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:02:40,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61825904] [2022-07-13 20:02:40,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:40,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:02:40,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:40,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:02:40,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:02:40,638 INFO L87 Difference]: Start difference. First operand 9045 states and 13210 transitions. Second operand has 3 states, 3 states have (on average 601.3333333333334) internal successors, (1804), 2 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:45,521 INFO L93 Difference]: Finished difference Result 24894 states and 37193 transitions. [2022-07-13 20:02:45,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:02:45,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 601.3333333333334) internal successors, (1804), 2 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1814 [2022-07-13 20:02:45,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:45,563 INFO L225 Difference]: With dead ends: 24894 [2022-07-13 20:02:45,563 INFO L226 Difference]: Without dead ends: 15852 [2022-07-13 20:02:45,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:02:45,581 INFO L413 NwaCegarLoop]: 2060 mSDtfsCounter, 2101 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 4496 mSolverCounterSat, 2354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 6850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2354 IncrementalHoareTripleChecker+Valid, 4496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:45,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2101 Valid, 2201 Invalid, 6850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2354 Valid, 4496 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-13 20:02:45,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15852 states. [2022-07-13 20:02:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15852 to 15850. [2022-07-13 20:02:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15850 states, 15849 states have (on average 1.3722632342734558) internal successors, (21749), 15849 states have internal predecessors, (21749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:45,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15850 states to 15850 states and 21749 transitions. [2022-07-13 20:02:45,815 INFO L78 Accepts]: Start accepts. Automaton has 15850 states and 21749 transitions. Word has length 1814 [2022-07-13 20:02:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:45,816 INFO L495 AbstractCegarLoop]: Abstraction has 15850 states and 21749 transitions. [2022-07-13 20:02:45,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 601.3333333333334) internal successors, (1804), 2 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 15850 states and 21749 transitions. [2022-07-13 20:02:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1833 [2022-07-13 20:02:45,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:45,965 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:45,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 20:02:45,965 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:45,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:45,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1606874794, now seen corresponding path program 1 times [2022-07-13 20:02:45,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:45,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296328242] [2022-07-13 20:02:45,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:45,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 20:02:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296328242] [2022-07-13 20:02:46,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296328242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:46,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:46,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:02:46,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189611027] [2022-07-13 20:02:46,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:46,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:02:46,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:02:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:02:46,581 INFO L87 Difference]: Start difference. First operand 15850 states and 21749 transitions. Second operand has 3 states, 3 states have (on average 607.0) internal successors, (1821), 3 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:51,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:02:51,963 INFO L93 Difference]: Finished difference Result 45296 states and 62817 transitions. [2022-07-13 20:02:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:02:51,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 607.0) internal successors, (1821), 3 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1832 [2022-07-13 20:02:51,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:02:52,033 INFO L225 Difference]: With dead ends: 45296 [2022-07-13 20:02:52,033 INFO L226 Difference]: Without dead ends: 29449 [2022-07-13 20:02:52,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:02:52,062 INFO L413 NwaCegarLoop]: 3921 mSDtfsCounter, 1734 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 5779 mSolverCounterSat, 1484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 4144 SdHoareTripleChecker+Invalid, 7263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1484 IncrementalHoareTripleChecker+Valid, 5779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:02:52,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 4144 Invalid, 7263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1484 Valid, 5779 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-13 20:02:52,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29449 states. [2022-07-13 20:02:52,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29449 to 29438. [2022-07-13 20:02:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29438 states, 29437 states have (on average 1.2318850426334205) internal successors, (36263), 29437 states have internal predecessors, (36263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29438 states to 29438 states and 36263 transitions. [2022-07-13 20:02:52,636 INFO L78 Accepts]: Start accepts. Automaton has 29438 states and 36263 transitions. Word has length 1832 [2022-07-13 20:02:52,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:02:52,637 INFO L495 AbstractCegarLoop]: Abstraction has 29438 states and 36263 transitions. [2022-07-13 20:02:52,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 607.0) internal successors, (1821), 3 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:02:52,638 INFO L276 IsEmpty]: Start isEmpty. Operand 29438 states and 36263 transitions. [2022-07-13 20:02:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1837 [2022-07-13 20:02:52,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:02:52,714 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:02:52,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 20:02:52,715 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:02:52,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:02:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash 915782135, now seen corresponding path program 1 times [2022-07-13 20:02:52,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:02:52,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801781974] [2022-07-13 20:02:52,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:02:52,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:02:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:02:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 20:02:54,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:02:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801781974] [2022-07-13 20:02:54,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801781974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:02:54,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:02:54,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 20:02:54,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746841502] [2022-07-13 20:02:54,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:02:54,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:02:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:02:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:02:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:02:54,185 INFO L87 Difference]: Start difference. First operand 29438 states and 36263 transitions. Second operand has 5 states, 5 states have (on average 360.4) internal successors, (1802), 4 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:03:07,514 INFO L93 Difference]: Finished difference Result 77500 states and 94385 transitions. [2022-07-13 20:03:07,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:03:07,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 360.4) internal successors, (1802), 4 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1836 [2022-07-13 20:03:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:03:07,603 INFO L225 Difference]: With dead ends: 77500 [2022-07-13 20:03:07,603 INFO L226 Difference]: Without dead ends: 44713 [2022-07-13 20:03:07,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:03:07,643 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 7007 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 18069 mSolverCounterSat, 3124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7007 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 21193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3124 IncrementalHoareTripleChecker+Valid, 18069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:03:07,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7007 Valid, 2055 Invalid, 21193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3124 Valid, 18069 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2022-07-13 20:03:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44713 states. [2022-07-13 20:03:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44713 to 44711. [2022-07-13 20:03:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44711 states, 44710 states have (on average 1.1202415566987252) internal successors, (50086), 44710 states have internal predecessors, (50086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:08,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44711 states to 44711 states and 50086 transitions. [2022-07-13 20:03:08,321 INFO L78 Accepts]: Start accepts. Automaton has 44711 states and 50086 transitions. Word has length 1836 [2022-07-13 20:03:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:03:08,322 INFO L495 AbstractCegarLoop]: Abstraction has 44711 states and 50086 transitions. [2022-07-13 20:03:08,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 360.4) internal successors, (1802), 4 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 44711 states and 50086 transitions. [2022-07-13 20:03:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2082 [2022-07-13 20:03:08,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:03:08,395 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:08,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 20:03:08,395 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:03:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:03:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1880971073, now seen corresponding path program 1 times [2022-07-13 20:03:08,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:03:08,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665743671] [2022-07-13 20:03:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:03:08,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:03:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:03:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-07-13 20:03:09,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:03:09,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665743671] [2022-07-13 20:03:09,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665743671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:03:09,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:03:09,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:03:09,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10147608] [2022-07-13 20:03:09,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:03:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:03:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:03:09,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:03:09,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:09,217 INFO L87 Difference]: Start difference. First operand 44711 states and 50086 transitions. Second operand has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:03:14,510 INFO L93 Difference]: Finished difference Result 103015 states and 117001 transitions. [2022-07-13 20:03:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:03:14,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2081 [2022-07-13 20:03:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:03:14,599 INFO L225 Difference]: With dead ends: 103015 [2022-07-13 20:03:14,599 INFO L226 Difference]: Without dead ends: 58307 [2022-07-13 20:03:14,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:14,633 INFO L413 NwaCegarLoop]: 1722 mSDtfsCounter, 2443 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4815 mSolverCounterSat, 2162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 6977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2162 IncrementalHoareTripleChecker+Valid, 4815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:03:14,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2443 Valid, 1841 Invalid, 6977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2162 Valid, 4815 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-13 20:03:14,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58307 states. [2022-07-13 20:03:15,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58307 to 58305. [2022-07-13 20:03:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58305 states, 58304 states have (on average 1.131826289791438) internal successors, (65990), 58304 states have internal predecessors, (65990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58305 states to 58305 states and 65990 transitions. [2022-07-13 20:03:15,344 INFO L78 Accepts]: Start accepts. Automaton has 58305 states and 65990 transitions. Word has length 2081 [2022-07-13 20:03:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:03:15,345 INFO L495 AbstractCegarLoop]: Abstraction has 58305 states and 65990 transitions. [2022-07-13 20:03:15,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 646.3333333333334) internal successors, (1939), 3 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 58305 states and 65990 transitions. [2022-07-13 20:03:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2104 [2022-07-13 20:03:15,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:03:15,446 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:15,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 20:03:15,447 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:03:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:03:15,447 INFO L85 PathProgramCache]: Analyzing trace with hash -43093248, now seen corresponding path program 1 times [2022-07-13 20:03:15,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:03:15,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709095927] [2022-07-13 20:03:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:03:15,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:03:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:03:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 507 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-13 20:03:16,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:03:16,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709095927] [2022-07-13 20:03:16,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709095927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:03:16,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:03:16,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:03:16,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173762147] [2022-07-13 20:03:16,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:03:16,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:03:16,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:03:16,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:03:16,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:16,148 INFO L87 Difference]: Start difference. First operand 58305 states and 65990 transitions. Second operand has 3 states, 3 states have (on average 650.3333333333334) internal successors, (1951), 3 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:03:21,259 INFO L93 Difference]: Finished difference Result 142084 states and 160337 transitions. [2022-07-13 20:03:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:03:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 650.3333333333334) internal successors, (1951), 3 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2103 [2022-07-13 20:03:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:03:21,378 INFO L225 Difference]: With dead ends: 142084 [2022-07-13 20:03:21,378 INFO L226 Difference]: Without dead ends: 83782 [2022-07-13 20:03:21,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:21,436 INFO L413 NwaCegarLoop]: 1720 mSDtfsCounter, 1911 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 5585 mSolverCounterSat, 888 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 6473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 888 IncrementalHoareTripleChecker+Valid, 5585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-13 20:03:21,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 2014 Invalid, 6473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [888 Valid, 5585 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-13 20:03:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83782 states. [2022-07-13 20:03:22,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83782 to 78680. [2022-07-13 20:03:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78680 states, 78679 states have (on average 1.1164097154259713) internal successors, (87838), 78679 states have internal predecessors, (87838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78680 states to 78680 states and 87838 transitions. [2022-07-13 20:03:22,671 INFO L78 Accepts]: Start accepts. Automaton has 78680 states and 87838 transitions. Word has length 2103 [2022-07-13 20:03:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:03:22,672 INFO L495 AbstractCegarLoop]: Abstraction has 78680 states and 87838 transitions. [2022-07-13 20:03:22,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 650.3333333333334) internal successors, (1951), 3 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 78680 states and 87838 transitions. [2022-07-13 20:03:22,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2117 [2022-07-13 20:03:22,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:03:22,771 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:22,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 20:03:22,772 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:03:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:03:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2064628908, now seen corresponding path program 1 times [2022-07-13 20:03:22,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:03:22,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035040829] [2022-07-13 20:03:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:03:22,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:03:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:03:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-07-13 20:03:23,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:03:23,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035040829] [2022-07-13 20:03:23,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035040829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:03:23,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:03:23,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:03:23,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879087883] [2022-07-13 20:03:23,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:03:23,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:03:23,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:03:23,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:03:23,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:23,776 INFO L87 Difference]: Start difference. First operand 78680 states and 87838 transitions. Second operand has 3 states, 3 states have (on average 643.0) internal successors, (1929), 2 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:28,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:03:28,709 INFO L93 Difference]: Finished difference Result 176027 states and 196049 transitions. [2022-07-13 20:03:28,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:03:28,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 643.0) internal successors, (1929), 2 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2116 [2022-07-13 20:03:28,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:03:28,962 INFO L225 Difference]: With dead ends: 176027 [2022-07-13 20:03:28,962 INFO L226 Difference]: Without dead ends: 97350 [2022-07-13 20:03:28,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:28,993 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 2941 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4768 mSolverCounterSat, 1186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2941 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 5954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1186 IncrementalHoareTripleChecker+Valid, 4768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-13 20:03:28,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2941 Valid, 1114 Invalid, 5954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1186 Valid, 4768 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-13 20:03:29,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97350 states. [2022-07-13 20:03:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97350 to 85462. [2022-07-13 20:03:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85462 states, 85461 states have (on average 1.0891049718585086) internal successors, (93076), 85461 states have internal predecessors, (93076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85462 states to 85462 states and 93076 transitions. [2022-07-13 20:03:30,013 INFO L78 Accepts]: Start accepts. Automaton has 85462 states and 93076 transitions. Word has length 2116 [2022-07-13 20:03:30,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:03:30,014 INFO L495 AbstractCegarLoop]: Abstraction has 85462 states and 93076 transitions. [2022-07-13 20:03:30,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 643.0) internal successors, (1929), 2 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 85462 states and 93076 transitions. [2022-07-13 20:03:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2154 [2022-07-13 20:03:30,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:03:30,326 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:30,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 20:03:30,327 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:03:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:03:30,328 INFO L85 PathProgramCache]: Analyzing trace with hash -11946272, now seen corresponding path program 1 times [2022-07-13 20:03:30,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:03:30,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128771618] [2022-07-13 20:03:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:03:30,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:03:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:03:31,359 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-13 20:03:31,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:03:31,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128771618] [2022-07-13 20:03:31,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128771618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:03:31,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:03:31,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:03:31,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198791883] [2022-07-13 20:03:31,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:03:31,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:03:31,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:03:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:03:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:31,365 INFO L87 Difference]: Start difference. First operand 85462 states and 93076 transitions. Second operand has 3 states, 3 states have (on average 657.0) internal successors, (1971), 3 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:37,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:03:37,437 INFO L93 Difference]: Finished difference Result 215091 states and 236559 transitions. [2022-07-13 20:03:37,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:03:37,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 657.0) internal successors, (1971), 3 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2153 [2022-07-13 20:03:37,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:03:37,607 INFO L225 Difference]: With dead ends: 215091 [2022-07-13 20:03:37,607 INFO L226 Difference]: Without dead ends: 129632 [2022-07-13 20:03:37,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:37,639 INFO L413 NwaCegarLoop]: 3818 mSDtfsCounter, 1829 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 5997 mSolverCounterSat, 1401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 4039 SdHoareTripleChecker+Invalid, 7398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1401 IncrementalHoareTripleChecker+Valid, 5997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:03:37,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 4039 Invalid, 7398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1401 Valid, 5997 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-13 20:03:37,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129632 states. [2022-07-13 20:03:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129632 to 129616. [2022-07-13 20:03:39,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129616 states, 129615 states have (on average 1.0813871851251784) internal successors, (140164), 129615 states have internal predecessors, (140164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129616 states to 129616 states and 140164 transitions. [2022-07-13 20:03:39,249 INFO L78 Accepts]: Start accepts. Automaton has 129616 states and 140164 transitions. Word has length 2153 [2022-07-13 20:03:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:03:39,250 INFO L495 AbstractCegarLoop]: Abstraction has 129616 states and 140164 transitions. [2022-07-13 20:03:39,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 657.0) internal successors, (1971), 3 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 129616 states and 140164 transitions. [2022-07-13 20:03:39,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2274 [2022-07-13 20:03:39,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:03:39,794 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:39,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 20:03:39,794 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:03:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:03:39,795 INFO L85 PathProgramCache]: Analyzing trace with hash -702057184, now seen corresponding path program 1 times [2022-07-13 20:03:39,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:03:39,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237521885] [2022-07-13 20:03:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:03:39,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:03:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:03:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 968 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2022-07-13 20:03:40,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:03:40,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237521885] [2022-07-13 20:03:40,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237521885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:03:40,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:03:40,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:03:40,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274628120] [2022-07-13 20:03:40,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:03:40,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:03:40,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:03:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:03:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:40,839 INFO L87 Difference]: Start difference. First operand 129616 states and 140164 transitions. Second operand has 3 states, 3 states have (on average 650.3333333333334) internal successors, (1951), 3 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:45,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:03:45,968 INFO L93 Difference]: Finished difference Result 259223 states and 280319 transitions. [2022-07-13 20:03:45,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:03:45,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 650.3333333333334) internal successors, (1951), 3 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2273 [2022-07-13 20:03:45,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:03:46,189 INFO L225 Difference]: With dead ends: 259223 [2022-07-13 20:03:46,189 INFO L226 Difference]: Without dead ends: 129610 [2022-07-13 20:03:46,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:46,248 INFO L413 NwaCegarLoop]: 2991 mSDtfsCounter, 2074 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 5444 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 6141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 5444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:03:46,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 3290 Invalid, 6141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 5444 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-13 20:03:46,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129610 states. [2022-07-13 20:03:47,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129610 to 129609. [2022-07-13 20:03:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129609 states, 129608 states have (on average 1.0665776803900995) internal successors, (138237), 129608 states have internal predecessors, (138237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129609 states to 129609 states and 138237 transitions. [2022-07-13 20:03:47,937 INFO L78 Accepts]: Start accepts. Automaton has 129609 states and 138237 transitions. Word has length 2273 [2022-07-13 20:03:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:03:47,937 INFO L495 AbstractCegarLoop]: Abstraction has 129609 states and 138237 transitions. [2022-07-13 20:03:47,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 650.3333333333334) internal successors, (1951), 3 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 129609 states and 138237 transitions. [2022-07-13 20:03:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2480 [2022-07-13 20:03:48,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:03:48,089 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:48,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 20:03:48,090 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:03:48,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:03:48,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1343159202, now seen corresponding path program 1 times [2022-07-13 20:03:48,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:03:48,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997828795] [2022-07-13 20:03:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:03:48,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:03:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:03:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2018 backedges. 1212 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2022-07-13 20:03:49,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:03:49,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997828795] [2022-07-13 20:03:49,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997828795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:03:49,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:03:49,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:03:49,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887285041] [2022-07-13 20:03:49,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:03:49,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:03:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:03:49,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:03:49,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:49,338 INFO L87 Difference]: Start difference. First operand 129609 states and 138237 transitions. Second operand has 3 states, 3 states have (on average 647.3333333333334) internal successors, (1942), 3 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:55,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:03:55,032 INFO L93 Difference]: Finished difference Result 288108 states and 306668 transitions. [2022-07-13 20:03:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:03:55,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 647.3333333333334) internal successors, (1942), 3 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2479 [2022-07-13 20:03:55,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:03:55,247 INFO L225 Difference]: With dead ends: 288108 [2022-07-13 20:03:55,247 INFO L226 Difference]: Without dead ends: 158502 [2022-07-13 20:03:55,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:55,302 INFO L413 NwaCegarLoop]: 3917 mSDtfsCounter, 1724 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 5751 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 4145 SdHoareTripleChecker+Invalid, 6157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 5751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:03:55,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1724 Valid, 4145 Invalid, 6157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 5751 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-13 20:03:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158502 states. [2022-07-13 20:03:57,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158502 to 155082. [2022-07-13 20:03:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155082 states, 155081 states have (on average 1.0584662208781217) internal successors, (164148), 155081 states have internal predecessors, (164148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155082 states to 155082 states and 164148 transitions. [2022-07-13 20:03:57,667 INFO L78 Accepts]: Start accepts. Automaton has 155082 states and 164148 transitions. Word has length 2479 [2022-07-13 20:03:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:03:57,668 INFO L495 AbstractCegarLoop]: Abstraction has 155082 states and 164148 transitions. [2022-07-13 20:03:57,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 647.3333333333334) internal successors, (1942), 3 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:03:57,668 INFO L276 IsEmpty]: Start isEmpty. Operand 155082 states and 164148 transitions. [2022-07-13 20:03:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2515 [2022-07-13 20:03:57,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:03:57,873 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:03:57,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 20:03:57,873 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:03:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:03:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash 257831704, now seen corresponding path program 1 times [2022-07-13 20:03:57,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:03:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508157703] [2022-07-13 20:03:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:03:57,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:03:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:03:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2011 backedges. 1277 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2022-07-13 20:03:59,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:03:59,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508157703] [2022-07-13 20:03:59,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508157703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:03:59,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:03:59,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:03:59,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683154617] [2022-07-13 20:03:59,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:03:59,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:03:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:03:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:03:59,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:03:59,126 INFO L87 Difference]: Start difference. First operand 155082 states and 164148 transitions. Second operand has 3 states, 3 states have (on average 664.6666666666666) internal successors, (1994), 3 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:04:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:04:04,806 INFO L93 Difference]: Finished difference Result 320357 states and 338937 transitions. [2022-07-13 20:04:04,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:04:04,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 664.6666666666666) internal successors, (1994), 3 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2514 [2022-07-13 20:04:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:04:05,047 INFO L225 Difference]: With dead ends: 320357 [2022-07-13 20:04:05,048 INFO L226 Difference]: Without dead ends: 158482 [2022-07-13 20:04:05,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:04:05,116 INFO L413 NwaCegarLoop]: 3673 mSDtfsCounter, 2024 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4773 mSolverCounterSat, 1691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 6464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1691 IncrementalHoareTripleChecker+Valid, 4773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:04:05,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 3895 Invalid, 6464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1691 Valid, 4773 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-13 20:04:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158482 states. [2022-07-13 20:04:06,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158482 to 156773. [2022-07-13 20:04:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156773 states, 156772 states have (on average 1.0267713622330519) internal successors, (160969), 156772 states have internal predecessors, (160969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:04:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156773 states to 156773 states and 160969 transitions. [2022-07-13 20:04:07,112 INFO L78 Accepts]: Start accepts. Automaton has 156773 states and 160969 transitions. Word has length 2514 [2022-07-13 20:04:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:04:07,113 INFO L495 AbstractCegarLoop]: Abstraction has 156773 states and 160969 transitions. [2022-07-13 20:04:07,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 664.6666666666666) internal successors, (1994), 3 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:04:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 156773 states and 160969 transitions. [2022-07-13 20:04:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2633 [2022-07-13 20:04:07,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:04:07,308 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:07,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 20:04:07,308 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:04:07,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:04:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1438896021, now seen corresponding path program 1 times [2022-07-13 20:04:07,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:04:07,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717624513] [2022-07-13 20:04:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:04:07,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:04:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:04:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2524 backedges. 1873 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-07-13 20:04:08,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:04:08,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717624513] [2022-07-13 20:04:08,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717624513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:04:08,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:04:08,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:04:08,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785280182] [2022-07-13 20:04:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:04:08,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:04:08,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:04:08,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:04:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:04:08,666 INFO L87 Difference]: Start difference. First operand 156773 states and 160969 transitions. Second operand has 3 states, 3 states have (on average 721.3333333333334) internal successors, (2164), 3 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:04:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:04:13,318 INFO L93 Difference]: Finished difference Result 313550 states and 321946 transitions. [2022-07-13 20:04:13,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:04:13,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 721.3333333333334) internal successors, (2164), 3 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2632 [2022-07-13 20:04:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:04:13,598 INFO L225 Difference]: With dead ends: 313550 [2022-07-13 20:04:13,598 INFO L226 Difference]: Without dead ends: 156780 [2022-07-13 20:04:13,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:04:13,664 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1989 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4441 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 5171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 4441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:04:13,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 1046 Invalid, 5171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 4441 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-13 20:04:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156780 states. [2022-07-13 20:04:15,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156780 to 155074. [2022-07-13 20:04:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155074 states, 155073 states have (on average 1.022273380923823) internal successors, (158527), 155073 states have internal predecessors, (158527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:04:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155074 states to 155074 states and 158527 transitions. [2022-07-13 20:04:16,014 INFO L78 Accepts]: Start accepts. Automaton has 155074 states and 158527 transitions. Word has length 2632 [2022-07-13 20:04:16,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:04:16,015 INFO L495 AbstractCegarLoop]: Abstraction has 155074 states and 158527 transitions. [2022-07-13 20:04:16,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 721.3333333333334) internal successors, (2164), 3 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:04:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 155074 states and 158527 transitions. [2022-07-13 20:04:16,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2675 [2022-07-13 20:04:16,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:04:16,192 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:16,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 20:04:16,192 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:04:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:04:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash 396445747, now seen corresponding path program 1 times [2022-07-13 20:04:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:04:16,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073909308] [2022-07-13 20:04:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:04:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:04:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:04:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2811 backedges. 1831 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2022-07-13 20:04:17,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:04:17,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073909308] [2022-07-13 20:04:17,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073909308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:04:17,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:04:17,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:04:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834537685] [2022-07-13 20:04:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:04:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:04:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:04:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:04:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:04:17,560 INFO L87 Difference]: Start difference. First operand 155074 states and 158527 transitions. Second operand has 3 states, 3 states have (on average 659.0) internal successors, (1977), 3 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:04:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:04:22,577 INFO L93 Difference]: Finished difference Result 362807 states and 371689 transitions. [2022-07-13 20:04:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:04:22,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 659.0) internal successors, (1977), 3 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2674 [2022-07-13 20:04:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:04:22,893 INFO L225 Difference]: With dead ends: 362807 [2022-07-13 20:04:22,893 INFO L226 Difference]: Without dead ends: 207736 [2022-07-13 20:04:22,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:04:22,993 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 1964 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 4537 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 5733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 4537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:04:22,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 1268 Invalid, 5733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1196 Valid, 4537 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-13 20:04:23,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207736 states.