./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_label44+token_ring.03.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 9a16e358cfe89c56ff212fd47034f5c1550027d42d4d56ed5c454e284a697aae --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 06:56:53,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:56:53,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:56:53,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:56:53,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:56:53,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:56:53,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:56:53,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:56:53,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:56:53,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:56:53,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:56:53,314 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:56:53,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:56:53,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:56:53,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:56:53,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:56:53,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:56:53,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:56:53,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:56:53,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:56:53,332 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:56:53,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:56:53,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:56:53,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:56:53,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:56:53,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:56:53,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:56:53,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:56:53,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:56:53,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:56:53,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:56:53,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:56:53,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:56:53,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:56:53,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:56:53,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:56:53,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:56:53,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:56:53,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:56:53,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:56:53,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:56:53,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:56:53,356 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:56:53,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:56:53,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:56:53,384 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:56:53,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:56:53,385 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:56:53,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:56:53,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:56:53,386 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:56:53,386 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:56:53,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:56:53,387 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:56:53,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:56:53,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:56:53,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:56:53,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:56:53,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:56:53,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:56:53,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:56:53,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:56:53,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:56:53,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:56:53,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:56:53,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:56:53,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:56:53,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:56:53,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:56:53,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:56:53,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:56:53,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:56:53,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:56:53,390 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:56:53,390 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:56:53,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:56:53,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a16e358cfe89c56ff212fd47034f5c1550027d42d4d56ed5c454e284a697aae [2022-07-21 06:56:53,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:56:53,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:56:53,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:56:53,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:56:53,689 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:56:53,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c [2022-07-21 06:56:53,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b460a7fca/8f34045a2b2748b0998067adc99c686c/FLAGa3fac8d31 [2022-07-21 06:56:54,506 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:56:54,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c [2022-07-21 06:56:54,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b460a7fca/8f34045a2b2748b0998067adc99c686c/FLAGa3fac8d31 [2022-07-21 06:56:54,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b460a7fca/8f34045a2b2748b0998067adc99c686c [2022-07-21 06:56:54,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:56:54,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:56:54,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:56:54,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:56:54,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:56:54,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:56:54" (1/1) ... [2022-07-21 06:56:54,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0677cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:54, skipping insertion in model container [2022-07-21 06:56:54,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:56:54" (1/1) ... [2022-07-21 06:56:54,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:56:54,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:56:56,116 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_label44+token_ring.03.cil-2.c[377340,377353] [2022-07-21 06:56:56,136 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_label44+token_ring.03.cil-2.c[383339,383352] [2022-07-21 06:56:56,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:56:56,265 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:56:57,025 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_label44+token_ring.03.cil-2.c[377340,377353] [2022-07-21 06:56:57,031 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_label44+token_ring.03.cil-2.c[383339,383352] [2022-07-21 06:56:57,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:56:57,095 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:56:57,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57 WrapperNode [2022-07-21 06:56:57,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:56:57,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:56:57,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:56:57,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:56:57,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,521 INFO L137 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-07-21 06:56:57,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:56:57,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:56:57,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:56:57,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:56:57,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:56:57,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:56:57,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:56:57,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:56:57,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (1/1) ... [2022-07-21 06:56:57,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:56:57,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:56:57,976 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) [2022-07-21 06:56:58,023 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 [2022-07-21 06:56:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:56:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 06:56:58,063 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 06:56:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 06:56:58,063 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 06:56:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 06:56:58,063 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 06:56:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 06:56:58,063 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 06:56:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 06:56:58,064 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 06:56:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 06:56:58,064 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 06:56:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:56:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:56:58,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:56:58,211 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:56:58,212 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:57:02,968 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:57:02,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:57:02,992 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-21 06:57:02,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:57:02 BoogieIcfgContainer [2022-07-21 06:57:02,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:57:02,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:57:02,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:57:02,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:57:02,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:56:54" (1/3) ... [2022-07-21 06:57:02,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b85679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:57:02, skipping insertion in model container [2022-07-21 06:57:02,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:56:57" (2/3) ... [2022-07-21 06:57:02,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b85679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:57:02, skipping insertion in model container [2022-07-21 06:57:03,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:57:02" (3/3) ... [2022-07-21 06:57:03,001 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.03.cil-2.c [2022-07-21 06:57:03,010 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:57:03,010 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 06:57:03,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:57:03,072 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@7e6c2783, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6c1b6d51 [2022-07-21 06:57:03,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 06:57:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-21 06:57:03,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 06:57:03,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:03,089 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] [2022-07-21 06:57:03,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:03,093 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-07-21 06:57:03,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:03,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987756283] [2022-07-21 06:57:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:03,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:03,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:03,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:57:03,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:03,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987756283] [2022-07-21 06:57:03,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987756283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:03,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:57:03,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 06:57:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391778265] [2022-07-21 06:57:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:03,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 06:57:03,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:03,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 06:57:03,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 06:57:03,371 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-21 06:57:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:04,194 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-07-21 06:57:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 06:57:04,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-07-21 06:57:04,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:04,223 INFO L225 Difference]: With dead ends: 4899 [2022-07-21 06:57:04,224 INFO L226 Difference]: Without dead ends: 2500 [2022-07-21 06:57:04,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:57:04,268 INFO L413 NwaCegarLoop]: 4287 mSDtfsCounter, 4543 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:04,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 16755 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 06:57:04,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-07-21 06:57:04,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-07-21 06:57:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-07-21 06:57:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-07-21 06:57:04,446 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-07-21 06:57:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:04,446 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-07-21 06:57:04,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-21 06:57:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-07-21 06:57:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 06:57:04,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:04,450 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] [2022-07-21 06:57:04,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 06:57:04,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:04,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:04,451 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-07-21 06:57:04,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:04,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912959068] [2022-07-21 06:57:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:04,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:04,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:04,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:04,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:57:04,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:04,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912959068] [2022-07-21 06:57:04,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912959068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:04,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:57:04,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:57:04,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637935574] [2022-07-21 06:57:04,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:04,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:57:04,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:57:04,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:57:04,564 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:05,412 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-07-21 06:57:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:57:05,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-21 06:57:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:05,423 INFO L225 Difference]: With dead ends: 2969 [2022-07-21 06:57:05,423 INFO L226 Difference]: Without dead ends: 2686 [2022-07-21 06:57:05,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:57:05,427 INFO L413 NwaCegarLoop]: 4320 mSDtfsCounter, 4469 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 20875 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:05,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 20875 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 06:57:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-07-21 06:57:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-07-21 06:57:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-21 06:57:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-07-21 06:57:05,564 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-07-21 06:57:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:05,565 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-07-21 06:57:05,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-07-21 06:57:05,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 06:57:05,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:05,567 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] [2022-07-21 06:57:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 06:57:05,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:05,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:05,569 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-07-21 06:57:05,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:05,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909805509] [2022-07-21 06:57:05,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:05,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:57:05,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:05,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909805509] [2022-07-21 06:57:05,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909805509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:05,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:57:05,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:57:05,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484356810] [2022-07-21 06:57:05,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:05,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:57:05,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:05,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:57:05,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:57:05,703 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:06,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:06,550 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-07-21 06:57:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:57:06,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-21 06:57:06,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:06,561 INFO L225 Difference]: With dead ends: 3451 [2022-07-21 06:57:06,561 INFO L226 Difference]: Without dead ends: 3035 [2022-07-21 06:57:06,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:57:06,564 INFO L413 NwaCegarLoop]: 4312 mSDtfsCounter, 4466 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 20867 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:06,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 20867 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 06:57:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-07-21 06:57:06,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-07-21 06:57:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-21 06:57:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-07-21 06:57:06,629 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-07-21 06:57:06,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:06,630 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-07-21 06:57:06,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-07-21 06:57:06,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 06:57:06,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:06,632 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] [2022-07-21 06:57:06,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 06:57:06,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-07-21 06:57:06,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:06,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734540462] [2022-07-21 06:57:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:06,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:06,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:06,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:06,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:06,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:06,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:06,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:57:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:06,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734540462] [2022-07-21 06:57:06,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734540462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:06,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:57:06,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:57:06,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589856050] [2022-07-21 06:57:06,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:06,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:57:06,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:57:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:57:06,696 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:07,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:07,555 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2022-07-21 06:57:07,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:57:07,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-21 06:57:07,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:07,569 INFO L225 Difference]: With dead ends: 4382 [2022-07-21 06:57:07,569 INFO L226 Difference]: Without dead ends: 3699 [2022-07-21 06:57:07,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:57:07,574 INFO L413 NwaCegarLoop]: 4308 mSDtfsCounter, 4462 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4472 SdHoareTripleChecker+Valid, 20863 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:07,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4472 Valid, 20863 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 06:57:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-07-21 06:57:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2022-07-21 06:57:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-07-21 06:57:07,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2022-07-21 06:57:07,655 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2022-07-21 06:57:07,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:07,655 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2022-07-21 06:57:07,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:07,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2022-07-21 06:57:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 06:57:07,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:07,657 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] [2022-07-21 06:57:07,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 06:57:07,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:07,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:07,658 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2022-07-21 06:57:07,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:07,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928245279] [2022-07-21 06:57:07,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:07,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:07,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:07,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:07,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:57:07,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:07,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928245279] [2022-07-21 06:57:07,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928245279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:07,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:57:07,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:57:07,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056759502] [2022-07-21 06:57:07,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:07,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:57:07,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:57:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:57:07,731 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:08,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:08,656 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2022-07-21 06:57:08,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 06:57:08,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-21 06:57:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:08,674 INFO L225 Difference]: With dead ends: 6651 [2022-07-21 06:57:08,674 INFO L226 Difference]: Without dead ends: 5433 [2022-07-21 06:57:08,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:57:08,680 INFO L413 NwaCegarLoop]: 4302 mSDtfsCounter, 4593 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 20849 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:08,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 20849 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 06:57:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-07-21 06:57:08,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2022-07-21 06:57:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-07-21 06:57:08,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2022-07-21 06:57:08,887 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2022-07-21 06:57:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:08,888 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2022-07-21 06:57:08,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2022-07-21 06:57:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 06:57:08,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:08,890 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] [2022-07-21 06:57:08,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 06:57:08,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:08,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:08,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2022-07-21 06:57:08,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:08,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640083618] [2022-07-21 06:57:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:08,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:57:08,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:08,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640083618] [2022-07-21 06:57:08,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640083618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:08,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:57:08,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:57:08,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984525569] [2022-07-21 06:57:08,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:08,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:57:08,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:08,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:57:08,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:57:08,949 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:09,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:09,923 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2022-07-21 06:57:09,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 06:57:09,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-21 06:57:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:09,970 INFO L225 Difference]: With dead ends: 10516 [2022-07-21 06:57:09,971 INFO L226 Difference]: Without dead ends: 8247 [2022-07-21 06:57:09,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:57:09,997 INFO L413 NwaCegarLoop]: 4339 mSDtfsCounter, 4479 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4488 SdHoareTripleChecker+Valid, 20883 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:09,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4488 Valid, 20883 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 06:57:10,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2022-07-21 06:57:10,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2022-07-21 06:57:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-07-21 06:57:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2022-07-21 06:57:10,295 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2022-07-21 06:57:10,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:10,295 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2022-07-21 06:57:10,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2022-07-21 06:57:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 06:57:10,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:10,301 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] [2022-07-21 06:57:10,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 06:57:10,301 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:10,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2022-07-21 06:57:10,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:10,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073638497] [2022-07-21 06:57:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:10,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:57:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:10,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073638497] [2022-07-21 06:57:10,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073638497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:10,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:57:10,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:57:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493373736] [2022-07-21 06:57:10,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:10,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:57:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:57:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:57:10,407 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:11,444 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2022-07-21 06:57:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 06:57:11,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-21 06:57:11,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:11,492 INFO L225 Difference]: With dead ends: 17230 [2022-07-21 06:57:11,493 INFO L226 Difference]: Without dead ends: 12950 [2022-07-21 06:57:11,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:57:11,510 INFO L413 NwaCegarLoop]: 4289 mSDtfsCounter, 4470 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 20836 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:11,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4484 Valid, 20836 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 06:57:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-07-21 06:57:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2022-07-21 06:57:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-07-21 06:57:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2022-07-21 06:57:11,853 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2022-07-21 06:57:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:11,854 INFO L495 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2022-07-21 06:57:11,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-21 06:57:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2022-07-21 06:57:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 06:57:11,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:11,861 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] [2022-07-21 06:57:11,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 06:57:11,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:11,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2022-07-21 06:57:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:11,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144246347] [2022-07-21 06:57:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:11,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:11,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:57:11,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:11,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144246347] [2022-07-21 06:57:11,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144246347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:11,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:57:11,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 06:57:11,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341847923] [2022-07-21 06:57:11,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:11,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 06:57:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 06:57:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 06:57:11,924 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-21 06:57:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:13,098 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2022-07-21 06:57:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 06:57:13,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-07-21 06:57:13,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:13,155 INFO L225 Difference]: With dead ends: 25979 [2022-07-21 06:57:13,155 INFO L226 Difference]: Without dead ends: 17584 [2022-07-21 06:57:13,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-21 06:57:13,184 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 4630 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 16716 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:13,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 16716 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 06:57:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-07-21 06:57:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2022-07-21 06:57:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-07-21 06:57:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2022-07-21 06:57:13,763 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2022-07-21 06:57:13,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:13,764 INFO L495 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2022-07-21 06:57:13,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-21 06:57:13,764 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2022-07-21 06:57:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 06:57:13,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:13,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:57:13,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 06:57:13,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:13,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:13,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2022-07-21 06:57:13,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:13,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212824881] [2022-07-21 06:57:13,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:13,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 06:57:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:57:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 06:57:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 06:57:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:13,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212824881] [2022-07-21 06:57:13,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212824881] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:57:13,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994905352] [2022-07-21 06:57:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:13,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:57:13,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:57:13,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:57:13,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 06:57:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:14,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:57:14,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:57:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 06:57:14,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:57:14,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994905352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:14,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:57:14,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 06:57:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407919867] [2022-07-21 06:57:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:14,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:57:14,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:57:14,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:57:14,081 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 06:57:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:14,817 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2022-07-21 06:57:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:57:14,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-21 06:57:14,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:14,906 INFO L225 Difference]: With dead ends: 39550 [2022-07-21 06:57:14,906 INFO L226 Difference]: Without dead ends: 26962 [2022-07-21 06:57:14,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:57:14,940 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:14,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:57:14,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2022-07-21 06:57:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2022-07-21 06:57:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-07-21 06:57:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2022-07-21 06:57:15,812 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2022-07-21 06:57:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:15,812 INFO L495 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2022-07-21 06:57:15,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 06:57:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2022-07-21 06:57:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 06:57:15,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:15,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:57:15,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 06:57:16,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:57:16,080 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:16,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:16,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2022-07-21 06:57:16,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:16,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040098606] [2022-07-21 06:57:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:16,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 06:57:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:57:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 06:57:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 06:57:16,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:16,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040098606] [2022-07-21 06:57:16,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040098606] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:57:16,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893503702] [2022-07-21 06:57:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:16,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:57:16,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:57:16,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:57:16,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 06:57:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:16,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:57:16,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:57:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 06:57:16,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:57:16,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893503702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:16,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:57:16,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 06:57:16,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977881698] [2022-07-21 06:57:16,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:16,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:57:16,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:16,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:57:16,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:57:16,322 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 06:57:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:17,612 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2022-07-21 06:57:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:57:17,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-21 06:57:17,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:17,808 INFO L225 Difference]: With dead ends: 75333 [2022-07-21 06:57:17,808 INFO L226 Difference]: Without dead ends: 50702 [2022-07-21 06:57:17,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:57:17,879 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:17,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:57:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2022-07-21 06:57:19,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2022-07-21 06:57:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-07-21 06:57:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2022-07-21 06:57:19,867 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2022-07-21 06:57:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:19,868 INFO L495 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2022-07-21 06:57:19,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 06:57:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2022-07-21 06:57:19,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-21 06:57:19,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:19,943 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:57:19,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 06:57:20,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 06:57:20,160 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2022-07-21 06:57:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:20,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591129612] [2022-07-21 06:57:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:20,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 06:57:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:57:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 06:57:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 06:57:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591129612] [2022-07-21 06:57:20,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591129612] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:57:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844418786] [2022-07-21 06:57:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:20,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:57:20,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:57:20,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:57:20,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 06:57:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:20,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:57:20,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:57:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 06:57:20,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:57:20,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844418786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:20,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:57:20,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 06:57:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028220113] [2022-07-21 06:57:20,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:57:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:57:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:57:20,622 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 06:57:23,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:23,519 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2022-07-21 06:57:23,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:57:23,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-07-21 06:57:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:23,939 INFO L225 Difference]: With dead ends: 144685 [2022-07-21 06:57:23,939 INFO L226 Difference]: Without dead ends: 96511 [2022-07-21 06:57:24,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:57:24,038 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:24,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:57:24,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2022-07-21 06:57:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2022-07-21 06:57:27,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-07-21 06:57:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96511 states to 96511 states and 147320 transitions. [2022-07-21 06:57:27,972 INFO L78 Accepts]: Start accepts. Automaton has 96511 states and 147320 transitions. Word has length 128 [2022-07-21 06:57:27,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:27,974 INFO L495 AbstractCegarLoop]: Abstraction has 96511 states and 147320 transitions. [2022-07-21 06:57:27,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 06:57:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 96511 states and 147320 transitions. [2022-07-21 06:57:28,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-21 06:57:28,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:28,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:57:28,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 06:57:28,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:57:28,416 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1108291405, now seen corresponding path program 1 times [2022-07-21 06:57:28,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:28,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988270818] [2022-07-21 06:57:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:28,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 06:57:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:57:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 06:57:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:57:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 06:57:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 06:57:28,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:28,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988270818] [2022-07-21 06:57:28,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988270818] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:57:28,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537068266] [2022-07-21 06:57:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:28,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:57:28,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:57:28,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:57:28,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 06:57:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:28,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:57:28,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:57:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 06:57:28,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:57:28,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537068266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:28,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:57:28,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 06:57:28,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026093737] [2022-07-21 06:57:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:28,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:57:28,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:28,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:57:28,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:57:28,724 INFO L87 Difference]: Start difference. First operand 96511 states and 147320 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 06:57:34,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:34,652 INFO L93 Difference]: Finished difference Result 280463 states and 429619 transitions. [2022-07-21 06:57:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:57:34,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-07-21 06:57:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:35,605 INFO L225 Difference]: With dead ends: 280463 [2022-07-21 06:57:35,605 INFO L226 Difference]: Without dead ends: 186091 [2022-07-21 06:57:35,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:57:35,799 INFO L413 NwaCegarLoop]: 4201 mSDtfsCounter, 4086 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4399 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:35,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4399 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:57:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186091 states. [2022-07-21 06:57:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186091 to 184521. [2022-07-21 06:57:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184521 states, 159460 states have (on average 1.465803336259877) internal successors, (233737), 161263 states have internal predecessors, (233737), 14405 states have call successors, (14405), 9118 states have call predecessors, (14405), 10654 states have return successors, (32274), 14267 states have call predecessors, (32274), 14405 states have call successors, (32274) [2022-07-21 06:57:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184521 states to 184521 states and 280416 transitions. [2022-07-21 06:57:43,504 INFO L78 Accepts]: Start accepts. Automaton has 184521 states and 280416 transitions. Word has length 166 [2022-07-21 06:57:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:43,505 INFO L495 AbstractCegarLoop]: Abstraction has 184521 states and 280416 transitions. [2022-07-21 06:57:43,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 06:57:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 184521 states and 280416 transitions. [2022-07-21 06:57:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-21 06:57:44,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:44,333 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:57:44,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 06:57:44,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:57:44,549 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:44,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:44,549 INFO L85 PathProgramCache]: Analyzing trace with hash 399987983, now seen corresponding path program 1 times [2022-07-21 06:57:44,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:44,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058494722] [2022-07-21 06:57:44,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:44,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 06:57:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 06:57:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 06:57:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 06:57:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 06:57:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:57:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:57:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 06:57:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:57:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 06:57:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 06:57:44,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058494722] [2022-07-21 06:57:44,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058494722] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:57:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685331515] [2022-07-21 06:57:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:44,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:57:44,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:57:44,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:57:44,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 06:57:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:44,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:57:44,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:57:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 06:57:44,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:57:44,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685331515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:44,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:57:44,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 06:57:44,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296145611] [2022-07-21 06:57:44,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:44,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:57:44,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:44,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:57:44,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:57:44,876 INFO L87 Difference]: Start difference. First operand 184521 states and 280416 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)