./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.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 29f58006f2dcb74445f74971d42059f9136b4de9a536aa3c519655ea459ca984 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:41:40,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:41:40,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:41:40,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:41:40,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:41:40,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:41:40,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:41:40,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:41:40,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:41:40,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:41:40,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:41:40,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:41:40,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:41:40,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:41:40,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:41:40,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:41:40,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:41:40,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:41:40,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:41:40,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:41:40,944 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:41:40,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:41:40,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:41:40,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:41:40,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:41:40,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:41:40,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:41:40,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:41:40,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:41:40,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:41:40,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:41:40,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:41:40,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:41:40,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:41:40,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:41:40,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:41:40,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:41:40,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:41:40,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:41:40,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:41:40,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:41:40,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:41:40,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:41:40,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:41:40,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:41:40,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:41:40,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:41:40,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:41:40,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:41:40,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:41:40,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:41:40,986 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:41:40,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:41:40,987 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:41:40,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:41:40,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:41:40,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:41:40,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:41:40,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:41:40,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:41:40,988 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:41:40,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:41:40,988 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:41:40,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:41:40,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:41:40,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:41:40,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:41:40,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:41:40,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:41:40,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:41:40,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:41:40,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:41:40,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:41:40,990 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:41:40,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:41:40,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:41:40,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29f58006f2dcb74445f74971d42059f9136b4de9a536aa3c519655ea459ca984 [2022-07-22 19:41:41,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:41:41,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:41:41,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:41:41,216 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:41:41,225 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:41:41,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c [2022-07-22 19:41:41,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950bc414f/653f4c6f96304f5f8e719dbf2bcce97c/FLAGf3a8d5687 [2022-07-22 19:41:41,985 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:41:41,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-2.c [2022-07-22 19:41:42,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950bc414f/653f4c6f96304f5f8e719dbf2bcce97c/FLAGf3a8d5687 [2022-07-22 19:41:42,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950bc414f/653f4c6f96304f5f8e719dbf2bcce97c [2022-07-22 19:41:42,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:41:42,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:41:42,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:41:42,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:41:42,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:41:42,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:41:42" (1/1) ... [2022-07-22 19:41:42,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a690660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:42, skipping insertion in model container [2022-07-22 19:41:42,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:41:42" (1/1) ... [2022-07-22 19:41:42,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:41:42,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:41:43,380 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.13.cil-2.c[382357,382370] [2022-07-22 19:41:43,397 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.13.cil-2.c[383339,383352] [2022-07-22 19:41:43,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:41:43,612 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:41:44,205 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.13.cil-2.c[382357,382370] [2022-07-22 19:41:44,209 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.13.cil-2.c[383339,383352] [2022-07-22 19:41:44,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:41:44,282 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:41:44,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44 WrapperNode [2022-07-22 19:41:44,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:41:44,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:41:44,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:41:44,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:41:44,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:44,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:44,779 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2022-07-22 19:41:44,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:41:44,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:41:44,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:41:44,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:41:44,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:44,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:44,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:44,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:45,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:45,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:45,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:45,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:41:45,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:41:45,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:41:45,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:41:45,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (1/1) ... [2022-07-22 19:41:45,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:41:45,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:41:45,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 19:41:45,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 19:41:45,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:41:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:41:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:41:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:41:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:41:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:41:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:41:45,347 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:41:45,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:41:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:41:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:41:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:41:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:41:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:41:45,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:41:45,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:41:45,464 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:41:45,466 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:41:50,230 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:41:50,256 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:41:50,256 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-07-22 19:41:50,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:41:50 BoogieIcfgContainer [2022-07-22 19:41:50,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:41:50,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:41:50,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:41:50,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:41:50,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:41:42" (1/3) ... [2022-07-22 19:41:50,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453697ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:41:50, skipping insertion in model container [2022-07-22 19:41:50,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:41:44" (2/3) ... [2022-07-22 19:41:50,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453697ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:41:50, skipping insertion in model container [2022-07-22 19:41:50,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:41:50" (3/3) ... [2022-07-22 19:41:50,269 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.13.cil-2.c [2022-07-22 19:41:50,278 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:41:50,279 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:41:50,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:41:50,351 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@7ce3f9c1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37c3b929 [2022-07-22 19:41:50,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:41:50,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 19:41:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:41:50,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:50,387 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] [2022-07-22 19:41:50,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2022-07-22 19:41:50,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:50,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429500285] [2022-07-22 19:41:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:41:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:41:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:41:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:41:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:50,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:50,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429500285] [2022-07-22 19:41:50,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429500285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:50,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:50,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:41:50,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107390252] [2022-07-22 19:41:50,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:50,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:41:50,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:41:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:41:50,732 INFO L87 Difference]: Start difference. First operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:52,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:52,331 INFO L93 Difference]: Finished difference Result 5325 states and 9765 transitions. [2022-07-22 19:41:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:41:52,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 19:41:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:52,359 INFO L225 Difference]: With dead ends: 5325 [2022-07-22 19:41:52,359 INFO L226 Difference]: Without dead ends: 2676 [2022-07-22 19:41:52,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:41:52,372 INFO L413 NwaCegarLoop]: 4729 mSDtfsCounter, 1107 mSDsluCounter, 12491 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 17220 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:52,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 17220 Invalid, 838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 19:41:52,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-07-22 19:41:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2022-07-22 19:41:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8243569131832797) internal successors, (4539), 2490 states have internal predecessors, (4539), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 19:41:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4593 transitions. [2022-07-22 19:41:52,566 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4593 transitions. Word has length 189 [2022-07-22 19:41:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:52,567 INFO L495 AbstractCegarLoop]: Abstraction has 2523 states and 4593 transitions. [2022-07-22 19:41:52,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4593 transitions. [2022-07-22 19:41:52,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:41:52,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:52,572 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] [2022-07-22 19:41:52,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:41:52,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:52,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:52,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1444519429, now seen corresponding path program 1 times [2022-07-22 19:41:52,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:52,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118386703] [2022-07-22 19:41:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:52,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:52,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:41:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:52,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:41:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:41:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:52,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:41:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:52,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118386703] [2022-07-22 19:41:52,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118386703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:52,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:52,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:41:52,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836724319] [2022-07-22 19:41:52,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:52,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:41:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:52,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:41:52,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:41:52,826 INFO L87 Difference]: Start difference. First operand 2523 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:54,024 INFO L93 Difference]: Finished difference Result 3061 states and 5463 transitions. [2022-07-22 19:41:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:41:54,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 19:41:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:54,037 INFO L225 Difference]: With dead ends: 3061 [2022-07-22 19:41:54,037 INFO L226 Difference]: Without dead ends: 2676 [2022-07-22 19:41:54,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:41:54,041 INFO L413 NwaCegarLoop]: 4659 mSDtfsCounter, 1093 mSDsluCounter, 12288 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 16947 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:54,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 16947 Invalid, 837 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:41:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-07-22 19:41:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2022-07-22 19:41:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8239549839228295) internal successors, (4538), 2490 states have internal predecessors, (4538), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 19:41:54,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4592 transitions. [2022-07-22 19:41:54,103 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4592 transitions. Word has length 189 [2022-07-22 19:41:54,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:54,104 INFO L495 AbstractCegarLoop]: Abstraction has 2523 states and 4592 transitions. [2022-07-22 19:41:54,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4592 transitions. [2022-07-22 19:41:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:41:54,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:54,107 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] [2022-07-22 19:41:54,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:41:54,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1347349561, now seen corresponding path program 1 times [2022-07-22 19:41:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:54,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310417673] [2022-07-22 19:41:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:54,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:54,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:41:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:41:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:54,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:41:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:54,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:41:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:54,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310417673] [2022-07-22 19:41:54,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310417673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:54,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:54,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:41:54,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153607640] [2022-07-22 19:41:54,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:54,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:41:54,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:41:54,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:41:54,303 INFO L87 Difference]: Start difference. First operand 2523 states and 4592 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:41:57,081 INFO L93 Difference]: Finished difference Result 3611 states and 6359 transitions. [2022-07-22 19:41:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:41:57,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 189 [2022-07-22 19:41:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:41:57,093 INFO L225 Difference]: With dead ends: 3611 [2022-07-22 19:41:57,093 INFO L226 Difference]: Without dead ends: 3230 [2022-07-22 19:41:57,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:41:57,096 INFO L413 NwaCegarLoop]: 4715 mSDtfsCounter, 5624 mSDsluCounter, 12879 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5644 SdHoareTripleChecker+Valid, 17594 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:41:57,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5644 Valid, 17594 Invalid, 2280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 19:41:57,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2022-07-22 19:41:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 2925. [2022-07-22 19:41:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2861 states have (on average 1.7948269835721775) internal successors, (5135), 2864 states have internal predecessors, (5135), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-22 19:41:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5236 transitions. [2022-07-22 19:41:57,238 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5236 transitions. Word has length 189 [2022-07-22 19:41:57,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:41:57,239 INFO L495 AbstractCegarLoop]: Abstraction has 2925 states and 5236 transitions. [2022-07-22 19:41:57,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:41:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5236 transitions. [2022-07-22 19:41:57,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:41:57,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:41:57,241 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] [2022-07-22 19:41:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:41:57,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:41:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:41:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash 671278923, now seen corresponding path program 1 times [2022-07-22 19:41:57,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:41:57,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311364945] [2022-07-22 19:41:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:41:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:41:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:41:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:57,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:41:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:41:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:41:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:57,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:41:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:41:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:41:57,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:41:57,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311364945] [2022-07-22 19:41:57,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311364945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:41:57,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:41:57,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:41:57,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367089415] [2022-07-22 19:41:57,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:41:57,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:41:57,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:41:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:41:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:41:57,420 INFO L87 Difference]: Start difference. First operand 2925 states and 5236 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:00,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:42:00,822 INFO L93 Difference]: Finished difference Result 4589 states and 7942 transitions. [2022-07-22 19:42:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:42:00,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:42:00,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:42:00,835 INFO L225 Difference]: With dead ends: 4589 [2022-07-22 19:42:00,836 INFO L226 Difference]: Without dead ends: 3806 [2022-07-22 19:42:00,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:42:00,840 INFO L413 NwaCegarLoop]: 5036 mSDtfsCounter, 5662 mSDsluCounter, 17829 mSDsCounter, 0 mSdLazyCounter, 3353 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5682 SdHoareTripleChecker+Valid, 22865 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:42:00,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5682 Valid, 22865 Invalid, 3435 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3353 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 19:42:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2022-07-22 19:42:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3298. [2022-07-22 19:42:00,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 3205 states have (on average 1.7703588143525741) internal successors, (5674), 3209 states have internal predecessors, (5674), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-22 19:42:00,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 5821 transitions. [2022-07-22 19:42:00,940 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 5821 transitions. Word has length 189 [2022-07-22 19:42:00,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:00,941 INFO L495 AbstractCegarLoop]: Abstraction has 3298 states and 5821 transitions. [2022-07-22 19:42:00,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:00,945 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 5821 transitions. [2022-07-22 19:42:00,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:42:00,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:00,947 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] [2022-07-22 19:42:00,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:42:00,948 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:00,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1053329399, now seen corresponding path program 1 times [2022-07-22 19:42:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:00,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650864025] [2022-07-22 19:42:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:42:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:42:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:42:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:42:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:01,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650864025] [2022-07-22 19:42:01,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650864025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:01,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:01,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:01,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864999389] [2022-07-22 19:42:01,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:01,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:01,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:01,108 INFO L87 Difference]: Start difference. First operand 3298 states and 5821 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:04,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:42:04,459 INFO L93 Difference]: Finished difference Result 6030 states and 10255 transitions. [2022-07-22 19:42:04,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:42:04,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:42:04,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:42:04,476 INFO L225 Difference]: With dead ends: 6030 [2022-07-22 19:42:04,476 INFO L226 Difference]: Without dead ends: 4874 [2022-07-22 19:42:04,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:42:04,487 INFO L413 NwaCegarLoop]: 5024 mSDtfsCounter, 5656 mSDsluCounter, 17829 mSDsCounter, 0 mSdLazyCounter, 3342 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5676 SdHoareTripleChecker+Valid, 22853 SdHoareTripleChecker+Invalid, 3426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:42:04,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5676 Valid, 22853 Invalid, 3426 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3342 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 19:42:04,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2022-07-22 19:42:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4048. [2022-07-22 19:42:04,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 3897 states have (on average 1.7344110854503465) internal successors, (6759), 3903 states have internal predecessors, (6759), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-22 19:42:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 7002 transitions. [2022-07-22 19:42:04,681 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 7002 transitions. Word has length 189 [2022-07-22 19:42:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:04,681 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 7002 transitions. [2022-07-22 19:42:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 7002 transitions. [2022-07-22 19:42:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:42:04,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:04,685 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] [2022-07-22 19:42:04,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:42:04,685 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:04,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash -483057593, now seen corresponding path program 1 times [2022-07-22 19:42:04,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:04,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696822241] [2022-07-22 19:42:04,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:04,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:04,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:04,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:42:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:42:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:42:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:04,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:42:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:04,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:04,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696822241] [2022-07-22 19:42:04,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696822241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:04,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:04,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:04,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947297902] [2022-07-22 19:42:04,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:04,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:04,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:04,833 INFO L87 Difference]: Start difference. First operand 4048 states and 7002 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:42:08,182 INFO L93 Difference]: Finished difference Result 8806 states and 14680 transitions. [2022-07-22 19:42:08,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:42:08,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:42:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:42:08,214 INFO L225 Difference]: With dead ends: 8806 [2022-07-22 19:42:08,214 INFO L226 Difference]: Without dead ends: 6900 [2022-07-22 19:42:08,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:42:08,223 INFO L413 NwaCegarLoop]: 5019 mSDtfsCounter, 5655 mSDsluCounter, 17829 mSDsCounter, 0 mSdLazyCounter, 3334 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5675 SdHoareTripleChecker+Valid, 22848 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:42:08,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5675 Valid, 22848 Invalid, 3418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3334 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 19:42:08,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6900 states. [2022-07-22 19:42:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6900 to 5549. [2022-07-22 19:42:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5282 states have (on average 1.690458159787959) internal successors, (8929), 5292 states have internal predecessors, (8929), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-22 19:42:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 9370 transitions. [2022-07-22 19:42:08,425 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 9370 transitions. Word has length 189 [2022-07-22 19:42:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:08,425 INFO L495 AbstractCegarLoop]: Abstraction has 5549 states and 9370 transitions. [2022-07-22 19:42:08,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 9370 transitions. [2022-07-22 19:42:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:42:08,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:08,429 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] [2022-07-22 19:42:08,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:42:08,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:08,430 INFO L85 PathProgramCache]: Analyzing trace with hash 920811593, now seen corresponding path program 1 times [2022-07-22 19:42:08,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:08,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783219550] [2022-07-22 19:42:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:08,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:42:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:42:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:08,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:42:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:42:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:08,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:08,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783219550] [2022-07-22 19:42:08,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783219550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:08,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:08,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:08,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795786382] [2022-07-22 19:42:08,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:08,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:08,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:08,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:08,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:08,563 INFO L87 Difference]: Start difference. First operand 5549 states and 9370 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:12,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:42:12,262 INFO L93 Difference]: Finished difference Result 14357 states and 23546 transitions. [2022-07-22 19:42:12,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:42:12,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:42:12,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:42:12,295 INFO L225 Difference]: With dead ends: 14357 [2022-07-22 19:42:12,295 INFO L226 Difference]: Without dead ends: 10950 [2022-07-22 19:42:12,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:42:12,310 INFO L413 NwaCegarLoop]: 5014 mSDtfsCounter, 5654 mSDsluCounter, 17829 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5674 SdHoareTripleChecker+Valid, 22843 SdHoareTripleChecker+Invalid, 3410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:42:12,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5674 Valid, 22843 Invalid, 3410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3326 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 19:42:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2022-07-22 19:42:12,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 8558. [2022-07-22 19:42:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8059 states have (on average 1.6477230425611118) internal successors, (13279), 8077 states have internal predecessors, (13279), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-22 19:42:12,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 14134 transitions. [2022-07-22 19:42:12,773 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 14134 transitions. Word has length 189 [2022-07-22 19:42:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:12,774 INFO L495 AbstractCegarLoop]: Abstraction has 8558 states and 14134 transitions. [2022-07-22 19:42:12,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 14134 transitions. [2022-07-22 19:42:12,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:42:12,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:12,778 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] [2022-07-22 19:42:12,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:42:12,781 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:12,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 134813703, now seen corresponding path program 1 times [2022-07-22 19:42:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:12,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054614410] [2022-07-22 19:42:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:12,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:42:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:42:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:42:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:12,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:42:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:12,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:12,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054614410] [2022-07-22 19:42:12,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054614410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:12,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:12,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:12,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075492860] [2022-07-22 19:42:12,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:12,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:12,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:12,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:12,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:12,916 INFO L87 Difference]: Start difference. First operand 8558 states and 14134 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:16,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:42:16,938 INFO L93 Difference]: Finished difference Result 25460 states and 41340 transitions. [2022-07-22 19:42:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:42:16,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:42:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:42:16,990 INFO L225 Difference]: With dead ends: 25460 [2022-07-22 19:42:16,990 INFO L226 Difference]: Without dead ends: 19044 [2022-07-22 19:42:17,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:42:17,012 INFO L413 NwaCegarLoop]: 4750 mSDtfsCounter, 5763 mSDsluCounter, 17145 mSDsCounter, 0 mSdLazyCounter, 2957 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5783 SdHoareTripleChecker+Valid, 21895 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:42:17,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5783 Valid, 21895 Invalid, 3079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 2957 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 19:42:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19044 states. [2022-07-22 19:42:17,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19044 to 14591. [2022-07-22 19:42:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14591 states, 13628 states have (on average 1.6143968300557676) internal successors, (22001), 13662 states have internal predecessors, (22001), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-22 19:42:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14591 states to 14591 states and 23738 transitions. [2022-07-22 19:42:17,745 INFO L78 Accepts]: Start accepts. Automaton has 14591 states and 23738 transitions. Word has length 189 [2022-07-22 19:42:17,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:17,745 INFO L495 AbstractCegarLoop]: Abstraction has 14591 states and 23738 transitions. [2022-07-22 19:42:17,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 14591 states and 23738 transitions. [2022-07-22 19:42:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:42:17,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:17,753 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] [2022-07-22 19:42:17,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:42:17,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash 802195593, now seen corresponding path program 1 times [2022-07-22 19:42:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:17,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078613183] [2022-07-22 19:42:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:42:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:42:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:17,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:42:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:42:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:17,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:17,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078613183] [2022-07-22 19:42:17,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078613183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:17,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:17,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124023968] [2022-07-22 19:42:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:17,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:17,896 INFO L87 Difference]: Start difference. First operand 14591 states and 23738 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:20,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:42:20,557 INFO L93 Difference]: Finished difference Result 31774 states and 51709 transitions. [2022-07-22 19:42:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:42:20,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:42:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:42:20,607 INFO L225 Difference]: With dead ends: 31774 [2022-07-22 19:42:20,608 INFO L226 Difference]: Without dead ends: 19325 [2022-07-22 19:42:20,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:42:20,644 INFO L413 NwaCegarLoop]: 4637 mSDtfsCounter, 5161 mSDsluCounter, 16824 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5182 SdHoareTripleChecker+Valid, 21461 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:42:20,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5182 Valid, 21461 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1585 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:42:20,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19325 states. [2022-07-22 19:42:21,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19325 to 14591. [2022-07-22 19:42:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14591 states, 13628 states have (on average 1.611975344878192) internal successors, (21968), 13662 states have internal predecessors, (21968), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-22 19:42:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14591 states to 14591 states and 23705 transitions. [2022-07-22 19:42:21,539 INFO L78 Accepts]: Start accepts. Automaton has 14591 states and 23705 transitions. Word has length 189 [2022-07-22 19:42:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:21,539 INFO L495 AbstractCegarLoop]: Abstraction has 14591 states and 23705 transitions. [2022-07-22 19:42:21,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 14591 states and 23705 transitions. [2022-07-22 19:42:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:42:21,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:21,548 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] [2022-07-22 19:42:21,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:42:21,549 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:21,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:21,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1393033273, now seen corresponding path program 1 times [2022-07-22 19:42:21,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:21,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418583659] [2022-07-22 19:42:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:21,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:21,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:21,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:42:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:42:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:21,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:42:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:21,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:42:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:21,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418583659] [2022-07-22 19:42:21,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418583659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:21,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:21,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:21,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83209335] [2022-07-22 19:42:21,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:21,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:21,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:21,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:21,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:21,703 INFO L87 Difference]: Start difference. First operand 14591 states and 23705 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:26,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:42:26,840 INFO L93 Difference]: Finished difference Result 47633 states and 76890 transitions. [2022-07-22 19:42:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:42:26,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:42:26,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:42:26,960 INFO L225 Difference]: With dead ends: 47633 [2022-07-22 19:42:26,960 INFO L226 Difference]: Without dead ends: 35184 [2022-07-22 19:42:26,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:42:26,994 INFO L413 NwaCegarLoop]: 4998 mSDtfsCounter, 5645 mSDsluCounter, 17829 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5665 SdHoareTripleChecker+Valid, 22827 SdHoareTripleChecker+Invalid, 3375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:42:26,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5665 Valid, 22827 Invalid, 3375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 19:42:27,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35184 states. [2022-07-22 19:42:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35184 to 26721. [2022-07-22 19:42:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26721 states, 24830 states have (on average 1.5892066049134113) internal successors, (39460), 24896 states have internal predecessors, (39460), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-22 19:42:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26721 states to 26721 states and 43123 transitions. [2022-07-22 19:42:28,652 INFO L78 Accepts]: Start accepts. Automaton has 26721 states and 43123 transitions. Word has length 189 [2022-07-22 19:42:28,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:28,652 INFO L495 AbstractCegarLoop]: Abstraction has 26721 states and 43123 transitions. [2022-07-22 19:42:28,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:28,653 INFO L276 IsEmpty]: Start isEmpty. Operand 26721 states and 43123 transitions. [2022-07-22 19:42:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:42:28,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:28,665 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] [2022-07-22 19:42:28,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:42:28,666 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:28,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:28,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1048205111, now seen corresponding path program 1 times [2022-07-22 19:42:28,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:28,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621653494] [2022-07-22 19:42:28,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:28,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:28,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:28,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:42:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:28,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:42:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:42:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:28,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:42:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:28,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:28,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621653494] [2022-07-22 19:42:28,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621653494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:28,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:28,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:28,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909946798] [2022-07-22 19:42:28,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:28,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:28,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:28,784 INFO L87 Difference]: Start difference. First operand 26721 states and 43123 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:36,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:42:36,890 INFO L93 Difference]: Finished difference Result 92049 states and 148866 transitions. [2022-07-22 19:42:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:42:36,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:42:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:42:37,097 INFO L225 Difference]: With dead ends: 92049 [2022-07-22 19:42:37,097 INFO L226 Difference]: Without dead ends: 67470 [2022-07-22 19:42:37,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:42:37,165 INFO L413 NwaCegarLoop]: 4991 mSDtfsCounter, 5647 mSDsluCounter, 17829 mSDsCounter, 0 mSdLazyCounter, 3280 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 22820 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:42:37,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5667 Valid, 22820 Invalid, 3367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 3280 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 19:42:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67470 states. [2022-07-22 19:42:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67470 to 51042. [2022-07-22 19:42:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51042 states, 47295 states have (on average 1.575938259858336) internal successors, (74534), 47425 states have internal predecessors, (74534), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-22 19:42:40,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51042 states to 51042 states and 82535 transitions. [2022-07-22 19:42:40,866 INFO L78 Accepts]: Start accepts. Automaton has 51042 states and 82535 transitions. Word has length 189 [2022-07-22 19:42:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:40,866 INFO L495 AbstractCegarLoop]: Abstraction has 51042 states and 82535 transitions. [2022-07-22 19:42:40,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 51042 states and 82535 transitions. [2022-07-22 19:42:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:42:40,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:40,889 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] [2022-07-22 19:42:40,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:42:40,890 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:40,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:40,890 INFO L85 PathProgramCache]: Analyzing trace with hash -67250297, now seen corresponding path program 1 times [2022-07-22 19:42:40,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:40,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010485125] [2022-07-22 19:42:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:40,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:40,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:42:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:42:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:42:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:42:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:41,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:41,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:41,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010485125] [2022-07-22 19:42:41,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010485125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:41,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:41,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:41,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924862161] [2022-07-22 19:42:41,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:41,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:41,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:41,023 INFO L87 Difference]: Start difference. First operand 51042 states and 82535 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:42:48,197 INFO L93 Difference]: Finished difference Result 117340 states and 192222 transitions. [2022-07-22 19:42:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:42:48,197 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:42:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:42:48,444 INFO L225 Difference]: With dead ends: 117340 [2022-07-22 19:42:48,445 INFO L226 Difference]: Without dead ends: 68440 [2022-07-22 19:42:48,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:42:48,563 INFO L413 NwaCegarLoop]: 4623 mSDtfsCounter, 5162 mSDsluCounter, 16824 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5183 SdHoareTripleChecker+Valid, 21447 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:42:48,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5183 Valid, 21447 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:42:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68440 states. [2022-07-22 19:42:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68440 to 51042. [2022-07-22 19:42:52,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51042 states, 47295 states have (on average 1.5732106988053705) internal successors, (74405), 47425 states have internal predecessors, (74405), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-22 19:42:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51042 states to 51042 states and 82406 transitions. [2022-07-22 19:42:52,538 INFO L78 Accepts]: Start accepts. Automaton has 51042 states and 82406 transitions. Word has length 189 [2022-07-22 19:42:52,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:42:52,539 INFO L495 AbstractCegarLoop]: Abstraction has 51042 states and 82406 transitions. [2022-07-22 19:42:52,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:42:52,539 INFO L276 IsEmpty]: Start isEmpty. Operand 51042 states and 82406 transitions. [2022-07-22 19:42:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:42:52,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:42:52,560 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] [2022-07-22 19:42:52,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 19:42:52,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:42:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:42:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash -678519355, now seen corresponding path program 1 times [2022-07-22 19:42:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:42:52,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961709761] [2022-07-22 19:42:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:42:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:42:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:42:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:42:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:52,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:42:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:42:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:52,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:42:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:42:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:42:52,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:42:52,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961709761] [2022-07-22 19:42:52,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961709761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:42:52,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:42:52,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:42:52,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500363068] [2022-07-22 19:42:52,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:42:52,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:42:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:42:52,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:42:52,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:42:52,690 INFO L87 Difference]: Start difference. First operand 51042 states and 82406 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:43:07,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:43:07,021 INFO L93 Difference]: Finished difference Result 180620 states and 293500 transitions. [2022-07-22 19:43:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:43:07,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:43:07,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:43:07,566 INFO L225 Difference]: With dead ends: 180620 [2022-07-22 19:43:07,567 INFO L226 Difference]: Without dead ends: 131720 [2022-07-22 19:43:07,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:43:07,735 INFO L413 NwaCegarLoop]: 4976 mSDtfsCounter, 5635 mSDsluCounter, 17829 mSDsCounter, 0 mSdLazyCounter, 3243 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5655 SdHoareTripleChecker+Valid, 22805 SdHoareTripleChecker+Invalid, 3330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:43:07,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5655 Valid, 22805 Invalid, 3330 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 3243 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 19:43:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131720 states. [2022-07-22 19:43:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131720 to 100069. [2022-07-22 19:43:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100069 states, 92610 states have (on average 1.5657380412482453) internal successors, (145003), 92868 states have internal predecessors, (145003), 5659 states have call successors, (5659), 1542 states have call predecessors, (5659), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-22 19:43:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100069 states to 100069 states and 163138 transitions. [2022-07-22 19:43:15,843 INFO L78 Accepts]: Start accepts. Automaton has 100069 states and 163138 transitions. Word has length 189 [2022-07-22 19:43:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:43:15,843 INFO L495 AbstractCegarLoop]: Abstraction has 100069 states and 163138 transitions. [2022-07-22 19:43:15,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:43:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 100069 states and 163138 transitions. [2022-07-22 19:43:15,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 19:43:15,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:43:15,881 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] [2022-07-22 19:43:15,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 19:43:15,882 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:43:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:43:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash -2083711033, now seen corresponding path program 1 times [2022-07-22 19:43:15,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:43:15,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827500149] [2022-07-22 19:43:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:43:15,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:43:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:43:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:43:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:43:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 19:43:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:43:15,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 19:43:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:43:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 19:43:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:43:16,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 19:43:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:43:16,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:43:16,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:43:16,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827500149] [2022-07-22 19:43:16,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827500149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:43:16,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:43:16,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:43:16,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832237072] [2022-07-22 19:43:16,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:43:16,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:43:16,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:43:16,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:43:16,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:43:16,009 INFO L87 Difference]: Start difference. First operand 100069 states and 163138 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:43:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:43:44,082 INFO L93 Difference]: Finished difference Result 358285 states and 589974 transitions. [2022-07-22 19:43:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:43:44,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 189 [2022-07-22 19:43:44,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted.