./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.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 9803c0f5a18eedfb3ad16cce49537bdc49a8790d5c61a825350a143730d73381 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:53:22,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:53:22,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:53:22,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:53:22,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:53:22,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:53:22,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:53:22,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:53:22,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:53:22,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:53:22,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:53:22,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:53:22,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:53:22,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:53:22,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:53:22,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:53:22,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:53:22,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:53:22,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:53:22,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:53:22,491 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:53:22,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:53:22,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:53:22,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:53:22,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:53:22,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:53:22,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:53:22,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:53:22,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:53:22,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:53:22,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:53:22,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:53:22,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:53:22,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:53:22,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:53:22,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:53:22,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:53:22,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:53:22,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:53:22,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:53:22,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:53:22,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:53:22,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:53:22,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:53:22,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:53:22,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:53:22,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:53:22,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:53:22,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:53:22,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:53:22,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:53:22,548 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:53:22,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:53:22,549 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:53:22,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:53:22,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:53:22,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:53:22,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:53:22,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:53:22,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:53:22,550 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:53:22,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:53:22,550 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:53:22,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:53:22,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:53:22,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:53:22,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:53:22,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:53:22,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:53:22,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:53:22,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:53:22,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:53:22,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:53:22,553 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:53:22,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:53:22,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:53:22,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9803c0f5a18eedfb3ad16cce49537bdc49a8790d5c61a825350a143730d73381 [2022-07-13 19:53:22,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:53:22,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:53:22,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:53:22,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:53:22,748 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:53:22,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c [2022-07-13 19:53:22,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e328755e7/8e9f4b86f53d41fa8dded2e873f188b7/FLAGf9b4fbf9b [2022-07-13 19:53:23,480 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:53:23,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.08.cil-2.c [2022-07-13 19:53:23,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e328755e7/8e9f4b86f53d41fa8dded2e873f188b7/FLAGf9b4fbf9b [2022-07-13 19:53:23,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e328755e7/8e9f4b86f53d41fa8dded2e873f188b7 [2022-07-13 19:53:23,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:53:23,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:53:23,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:53:23,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:53:23,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:53:23,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:53:23" (1/1) ... [2022-07-13 19:53:23,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e637326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:23, skipping insertion in model container [2022-07-13 19:53:23,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:53:23" (1/1) ... [2022-07-13 19:53:23,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:53:23,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:53:25,265 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_label42+token_ring.08.cil-2.c[378560,378573] [2022-07-13 19:53:25,288 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_label42+token_ring.08.cil-2.c[383339,383352] [2022-07-13 19:53:25,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:53:25,474 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:53:26,050 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_label42+token_ring.08.cil-2.c[378560,378573] [2022-07-13 19:53:26,055 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_label42+token_ring.08.cil-2.c[383339,383352] [2022-07-13 19:53:26,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:53:26,143 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:53:26,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26 WrapperNode [2022-07-13 19:53:26,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:53:26,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:53:26,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:53:26,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:53:26,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:26,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:26,524 INFO L137 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12972 [2022-07-13 19:53:26,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:53:26,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:53:26,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:53:26,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:53:26,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:26,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:26,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:26,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:26,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:26,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:26,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:26,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:53:26,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:53:26,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:53:26,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:53:26,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (1/1) ... [2022-07-13 19:53:27,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:53:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:53:27,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 19:53:27,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 19:53:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:53:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 19:53:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 19:53:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 19:53:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 19:53:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 19:53:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 19:53:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 19:53:27,122 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 19:53:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 19:53:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 19:53:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 19:53:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 19:53:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 19:53:27,123 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 19:53:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:53:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:53:27,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:53:27,259 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:53:27,261 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:53:32,120 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:53:32,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:53:32,150 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-13 19:53:32,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:53:32 BoogieIcfgContainer [2022-07-13 19:53:32,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:53:32,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:53:32,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:53:32,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:53:32,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:53:23" (1/3) ... [2022-07-13 19:53:32,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722738fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:53:32, skipping insertion in model container [2022-07-13 19:53:32,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:53:26" (2/3) ... [2022-07-13 19:53:32,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722738fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:53:32, skipping insertion in model container [2022-07-13 19:53:32,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:53:32" (3/3) ... [2022-07-13 19:53:32,159 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.08.cil-2.c [2022-07-13 19:53:32,169 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:53:32,169 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 19:53:32,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:53:32,261 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@5c3876b3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@759d1a2 [2022-07-13 19:53:32,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 19:53:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-13 19:53:32,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:32,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:32,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:32,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:32,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash -970277371, now seen corresponding path program 1 times [2022-07-13 19:53:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:32,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818806498] [2022-07-13 19:53:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:32,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:32,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:32,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818806498] [2022-07-13 19:53:32,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818806498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:32,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:32,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:53:32,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902640180] [2022-07-13 19:53:32,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:32,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:53:32,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:53:32,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:53:32,678 INFO L87 Difference]: Start difference. First operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:33,550 INFO L93 Difference]: Finished difference Result 5037 states and 9272 transitions. [2022-07-13 19:53:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:53:33,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:33,575 INFO L225 Difference]: With dead ends: 5037 [2022-07-13 19:53:33,576 INFO L226 Difference]: Without dead ends: 2503 [2022-07-13 19:53:33,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:53:33,588 INFO L413 NwaCegarLoop]: 4511 mSDtfsCounter, 748 mSDsluCounter, 12379 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 16890 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:33,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 16890 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:53:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2022-07-13 19:53:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2405. [2022-07-13 19:53:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2373 states have (on average 1.8348082595870205) internal successors, (4354), 2376 states have internal predecessors, (4354), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-13 19:53:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4400 transitions. [2022-07-13 19:53:33,701 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4400 transitions. Word has length 135 [2022-07-13 19:53:33,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:33,702 INFO L495 AbstractCegarLoop]: Abstraction has 2405 states and 4400 transitions. [2022-07-13 19:53:33,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4400 transitions. [2022-07-13 19:53:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:33,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:33,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:33,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:53:33,706 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:33,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:33,707 INFO L85 PathProgramCache]: Analyzing trace with hash -540619065, now seen corresponding path program 1 times [2022-07-13 19:53:33,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:33,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309998978] [2022-07-13 19:53:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:33,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:33,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:33,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:33,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:33,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:33,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309998978] [2022-07-13 19:53:33,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309998978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:33,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:33,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:53:33,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011080738] [2022-07-13 19:53:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:33,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:53:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:33,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:53:33,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:53:33,889 INFO L87 Difference]: Start difference. First operand 2405 states and 4400 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:35,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:35,543 INFO L93 Difference]: Finished difference Result 3147 states and 5591 transitions. [2022-07-13 19:53:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:53:35,544 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:35,554 INFO L225 Difference]: With dead ends: 3147 [2022-07-13 19:53:35,555 INFO L226 Difference]: Without dead ends: 2879 [2022-07-13 19:53:35,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:53:35,558 INFO L413 NwaCegarLoop]: 4478 mSDtfsCounter, 5066 mSDsluCounter, 12604 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:35,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5081 Valid, 17082 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 19:53:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2022-07-13 19:53:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2682. [2022-07-13 19:53:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2626 states have (on average 1.8111195734958112) internal successors, (4756), 2630 states have internal predecessors, (4756), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-13 19:53:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4839 transitions. [2022-07-13 19:53:35,617 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4839 transitions. Word has length 135 [2022-07-13 19:53:35,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:35,618 INFO L495 AbstractCegarLoop]: Abstraction has 2682 states and 4839 transitions. [2022-07-13 19:53:35,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4839 transitions. [2022-07-13 19:53:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:35,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:35,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:35,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:53:35,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:35,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1902621501, now seen corresponding path program 1 times [2022-07-13 19:53:35,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:35,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479590449] [2022-07-13 19:53:35,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:35,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:35,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:35,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:35,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:35,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:35,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479590449] [2022-07-13 19:53:35,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479590449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:35,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:35,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:35,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292774487] [2022-07-13 19:53:35,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:35,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:35,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:35,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:35,770 INFO L87 Difference]: Start difference. First operand 2682 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:37,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:37,782 INFO L93 Difference]: Finished difference Result 3810 states and 6649 transitions. [2022-07-13 19:53:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:37,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:37,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:37,794 INFO L225 Difference]: With dead ends: 3810 [2022-07-13 19:53:37,794 INFO L226 Difference]: Without dead ends: 3265 [2022-07-13 19:53:37,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:37,797 INFO L413 NwaCegarLoop]: 4701 mSDtfsCounter, 5078 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21976 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:37,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5093 Valid, 21976 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 19:53:37,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2022-07-13 19:53:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2940. [2022-07-13 19:53:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2860 states have (on average 1.7902097902097902) internal successors, (5120), 2865 states have internal predecessors, (5120), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-13 19:53:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 5239 transitions. [2022-07-13 19:53:37,928 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 5239 transitions. Word has length 135 [2022-07-13 19:53:37,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:37,929 INFO L495 AbstractCegarLoop]: Abstraction has 2940 states and 5239 transitions. [2022-07-13 19:53:37,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 5239 transitions. [2022-07-13 19:53:37,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:37,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:37,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:37,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:53:37,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:37,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:37,932 INFO L85 PathProgramCache]: Analyzing trace with hash 26310725, now seen corresponding path program 1 times [2022-07-13 19:53:37,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:37,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378458160] [2022-07-13 19:53:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:37,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:37,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:37,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:38,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:38,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378458160] [2022-07-13 19:53:38,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378458160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:38,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:38,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:38,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310978878] [2022-07-13 19:53:38,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:38,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:38,020 INFO L87 Difference]: Start difference. First operand 2940 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:40,006 INFO L93 Difference]: Finished difference Result 4787 states and 8197 transitions. [2022-07-13 19:53:40,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:40,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:40,024 INFO L225 Difference]: With dead ends: 4787 [2022-07-13 19:53:40,026 INFO L226 Difference]: Without dead ends: 3984 [2022-07-13 19:53:40,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:40,038 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 5157 mSDsluCounter, 16785 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21291 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:40,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 21291 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 19:53:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2022-07-13 19:53:40,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3457. [2022-07-13 19:53:40,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3329 states have (on average 1.756984079303094) internal successors, (5849), 3336 states have internal predecessors, (5849), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-13 19:53:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 6044 transitions. [2022-07-13 19:53:40,143 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 6044 transitions. Word has length 135 [2022-07-13 19:53:40,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:40,148 INFO L495 AbstractCegarLoop]: Abstraction has 3457 states and 6044 transitions. [2022-07-13 19:53:40,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:40,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 6044 transitions. [2022-07-13 19:53:40,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:40,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:40,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:40,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:53:40,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:40,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:40,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2028196995, now seen corresponding path program 1 times [2022-07-13 19:53:40,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:40,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266358894] [2022-07-13 19:53:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:40,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:40,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:40,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266358894] [2022-07-13 19:53:40,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266358894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:40,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:40,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:40,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806156601] [2022-07-13 19:53:40,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:40,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:40,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:40,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:40,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:40,274 INFO L87 Difference]: Start difference. First operand 3457 states and 6044 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:42,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:42,375 INFO L93 Difference]: Finished difference Result 6668 states and 11162 transitions. [2022-07-13 19:53:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:42,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:42,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:42,395 INFO L225 Difference]: With dead ends: 6668 [2022-07-13 19:53:42,395 INFO L226 Difference]: Without dead ends: 5348 [2022-07-13 19:53:42,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:42,404 INFO L413 NwaCegarLoop]: 4689 mSDtfsCounter, 5073 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 21964 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:42,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5088 Valid, 21964 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 19:53:42,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2022-07-13 19:53:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 4492. [2022-07-13 19:53:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4268 states have (on average 1.7120431115276475) internal successors, (7307), 4279 states have internal predecessors, (7307), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-13 19:53:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 7660 transitions. [2022-07-13 19:53:42,570 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 7660 transitions. Word has length 135 [2022-07-13 19:53:42,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:42,570 INFO L495 AbstractCegarLoop]: Abstraction has 4492 states and 7660 transitions. [2022-07-13 19:53:42,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:42,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 7660 transitions. [2022-07-13 19:53:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:42,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:42,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:42,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:53:42,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:42,574 INFO L85 PathProgramCache]: Analyzing trace with hash -539625339, now seen corresponding path program 1 times [2022-07-13 19:53:42,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:42,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736798948] [2022-07-13 19:53:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:42,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:42,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736798948] [2022-07-13 19:53:42,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736798948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:42,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:42,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:42,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576552545] [2022-07-13 19:53:42,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:42,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:42,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:42,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:42,686 INFO L87 Difference]: Start difference. First operand 4492 states and 7660 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:44,869 INFO L93 Difference]: Finished difference Result 10422 states and 17096 transitions. [2022-07-13 19:53:44,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:44,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:44,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:44,892 INFO L225 Difference]: With dead ends: 10422 [2022-07-13 19:53:44,892 INFO L226 Difference]: Without dead ends: 8067 [2022-07-13 19:53:44,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:44,898 INFO L413 NwaCegarLoop]: 4681 mSDtfsCounter, 5068 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 21956 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:44,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5083 Valid, 21956 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 19:53:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2022-07-13 19:53:45,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 6576. [2022-07-13 19:53:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6160 states have (on average 1.663474025974026) internal successors, (10247), 6179 states have internal predecessors, (10247), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-13 19:53:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10934 transitions. [2022-07-13 19:53:45,107 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10934 transitions. Word has length 135 [2022-07-13 19:53:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:45,107 INFO L495 AbstractCegarLoop]: Abstraction has 6576 states and 10934 transitions. [2022-07-13 19:53:45,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10934 transitions. [2022-07-13 19:53:45,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:45,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:45,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:45,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:53:45,112 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:45,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2107979015, now seen corresponding path program 1 times [2022-07-13 19:53:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:45,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444944588] [2022-07-13 19:53:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:45,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:45,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:45,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:45,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:45,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:45,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:45,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:45,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444944588] [2022-07-13 19:53:45,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444944588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:45,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:45,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:45,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882699693] [2022-07-13 19:53:45,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:45,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:45,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:45,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:45,233 INFO L87 Difference]: Start difference. First operand 6576 states and 10934 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:47,406 INFO L93 Difference]: Finished difference Result 17948 states and 29056 transitions. [2022-07-13 19:53:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:47,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:47,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:47,442 INFO L225 Difference]: With dead ends: 17948 [2022-07-13 19:53:47,442 INFO L226 Difference]: Without dead ends: 13509 [2022-07-13 19:53:47,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:47,457 INFO L413 NwaCegarLoop]: 4676 mSDtfsCounter, 5067 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 21951 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:47,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5082 Valid, 21951 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 19:53:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2022-07-13 19:53:47,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 10757. [2022-07-13 19:53:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6214723310234007) internal successors, (16145), 9992 states have internal predecessors, (16145), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-13 19:53:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17554 transitions. [2022-07-13 19:53:47,827 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17554 transitions. Word has length 135 [2022-07-13 19:53:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:47,828 INFO L495 AbstractCegarLoop]: Abstraction has 10757 states and 17554 transitions. [2022-07-13 19:53:47,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17554 transitions. [2022-07-13 19:53:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:47,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:47,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:47,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:53:47,834 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash -23371707, now seen corresponding path program 1 times [2022-07-13 19:53:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:47,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47114152] [2022-07-13 19:53:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:47,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47114152] [2022-07-13 19:53:47,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47114152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:47,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:47,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:47,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753578315] [2022-07-13 19:53:47,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:47,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:47,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:47,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:47,922 INFO L87 Difference]: Start difference. First operand 10757 states and 17554 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:49,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:49,195 INFO L93 Difference]: Finished difference Result 22268 states and 36159 transitions. [2022-07-13 19:53:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 19:53:49,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:49,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:49,231 INFO L225 Difference]: With dead ends: 22268 [2022-07-13 19:53:49,232 INFO L226 Difference]: Without dead ends: 13648 [2022-07-13 19:53:49,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:53:49,253 INFO L413 NwaCegarLoop]: 4410 mSDtfsCounter, 4885 mSDsluCounter, 12434 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 16844 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:49,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4901 Valid, 16844 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 19:53:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2022-07-13 19:53:49,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 10757. [2022-07-13 19:53:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6181580797428945) internal successors, (16112), 9992 states have internal predecessors, (16112), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-13 19:53:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17521 transitions. [2022-07-13 19:53:49,645 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17521 transitions. Word has length 135 [2022-07-13 19:53:49,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:49,645 INFO L495 AbstractCegarLoop]: Abstraction has 10757 states and 17521 transitions. [2022-07-13 19:53:49,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:49,645 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17521 transitions. [2022-07-13 19:53:49,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:49,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:49,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:49,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:53:49,651 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:49,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1061956281, now seen corresponding path program 1 times [2022-07-13 19:53:49,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:49,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640996563] [2022-07-13 19:53:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:49,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:49,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:49,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:49,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:49,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640996563] [2022-07-13 19:53:49,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640996563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:49,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:49,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:49,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199296431] [2022-07-13 19:53:49,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:49,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:49,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:49,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:49,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:49,733 INFO L87 Difference]: Start difference. First operand 10757 states and 17521 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:52,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:52,596 INFO L93 Difference]: Finished difference Result 32965 states and 52934 transitions. [2022-07-13 19:53:52,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:53:52,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:52,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:52,730 INFO L225 Difference]: With dead ends: 32965 [2022-07-13 19:53:52,730 INFO L226 Difference]: Without dead ends: 24345 [2022-07-13 19:53:52,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:53:52,753 INFO L413 NwaCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21940 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:52,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5074 Valid, 21940 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 19:53:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24345 states. [2022-07-13 19:53:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24345 to 19183. [2022-07-13 19:53:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19183 states, 17615 states have (on average 1.587056485949475) internal successors, (27956), 17682 states have internal predecessors, (27956), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-07-13 19:53:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19183 states to 19183 states and 30971 transitions. [2022-07-13 19:53:53,587 INFO L78 Accepts]: Start accepts. Automaton has 19183 states and 30971 transitions. Word has length 135 [2022-07-13 19:53:53,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:53:53,587 INFO L495 AbstractCegarLoop]: Abstraction has 19183 states and 30971 transitions. [2022-07-13 19:53:53,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 19183 states and 30971 transitions. [2022-07-13 19:53:53,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:53:53,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:53:53,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:53:53,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:53:53,600 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:53:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:53:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1259845637, now seen corresponding path program 1 times [2022-07-13 19:53:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:53:53,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663352941] [2022-07-13 19:53:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:53:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:53:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:53:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:53:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:53,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:53:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:53:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:53,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:53:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:53:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:53:53,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:53:53,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663352941] [2022-07-13 19:53:53,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663352941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:53:53,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:53:53,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:53:53,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660884052] [2022-07-13 19:53:53,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:53:53,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:53:53,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:53:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:53:53,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:53:53,691 INFO L87 Difference]: Start difference. First operand 19183 states and 30971 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:53:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:53:58,799 INFO L93 Difference]: Finished difference Result 70813 states and 113344 transitions. [2022-07-13 19:53:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:53:58,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:53:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:53:58,959 INFO L225 Difference]: With dead ends: 70813 [2022-07-13 19:53:58,959 INFO L226 Difference]: Without dead ends: 53767 [2022-07-13 19:53:59,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:53:59,005 INFO L413 NwaCegarLoop]: 4658 mSDtfsCounter, 5388 mSDsluCounter, 17267 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 21925 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:53:59,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5412 Valid, 21925 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 19:53:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53767 states. [2022-07-13 19:54:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53767 to 35904. [2022-07-13 19:54:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35904 states, 32864 states have (on average 1.5702896786757545) internal successors, (51606), 32995 states have internal predecessors, (51606), 2136 states have call successors, (2136), 775 states have call predecessors, (2136), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2022-07-13 19:54:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35904 states to 35904 states and 58191 transitions. [2022-07-13 19:54:01,016 INFO L78 Accepts]: Start accepts. Automaton has 35904 states and 58191 transitions. Word has length 135 [2022-07-13 19:54:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:01,016 INFO L495 AbstractCegarLoop]: Abstraction has 35904 states and 58191 transitions. [2022-07-13 19:54:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:54:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 35904 states and 58191 transitions. [2022-07-13 19:54:01,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:54:01,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:01,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:01,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:54:01,038 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:01,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:01,038 INFO L85 PathProgramCache]: Analyzing trace with hash -882014841, now seen corresponding path program 1 times [2022-07-13 19:54:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:01,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552246647] [2022-07-13 19:54:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:01,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:01,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:54:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:01,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:54:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:54:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:01,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:54:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:01,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:01,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552246647] [2022-07-13 19:54:01,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552246647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:01,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:01,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:01,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475816038] [2022-07-13 19:54:01,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:01,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:01,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:01,129 INFO L87 Difference]: Start difference. First operand 35904 states and 58191 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:54:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:11,694 INFO L93 Difference]: Finished difference Result 136652 states and 221030 transitions. [2022-07-13 19:54:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:54:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:54:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:12,171 INFO L225 Difference]: With dead ends: 136652 [2022-07-13 19:54:12,171 INFO L226 Difference]: Without dead ends: 102885 [2022-07-13 19:54:12,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:54:12,258 INFO L413 NwaCegarLoop]: 4615 mSDtfsCounter, 5197 mSDsluCounter, 16805 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 21420 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:12,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5211 Valid, 21420 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 19:54:12,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102885 states. [2022-07-13 19:54:16,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102885 to 68001. [2022-07-13 19:54:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68001 states, 62081 states have (on average 1.5570625473172146) internal successors, (96664), 62340 states have internal predecessors, (96664), 4120 states have call successors, (4120), 1543 states have call predecessors, (4120), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2022-07-13 19:54:16,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68001 states to 68001 states and 111719 transitions. [2022-07-13 19:54:16,858 INFO L78 Accepts]: Start accepts. Automaton has 68001 states and 111719 transitions. Word has length 135 [2022-07-13 19:54:16,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:16,858 INFO L495 AbstractCegarLoop]: Abstraction has 68001 states and 111719 transitions. [2022-07-13 19:54:16,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:54:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand 68001 states and 111719 transitions. [2022-07-13 19:54:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:54:16,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:16,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:16,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 19:54:16,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1505296443, now seen corresponding path program 1 times [2022-07-13 19:54:16,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:16,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041112570] [2022-07-13 19:54:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:16,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:54:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:54:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:54:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:54:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:16,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:16,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041112570] [2022-07-13 19:54:16,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041112570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:16,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:16,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:16,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577929307] [2022-07-13 19:54:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:16,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:16,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:16,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:16,980 INFO L87 Difference]: Start difference. First operand 68001 states and 111719 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:54:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:34,039 INFO L93 Difference]: Finished difference Result 262123 states and 431420 transitions. [2022-07-13 19:54:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:54:34,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-13 19:54:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:35,005 INFO L225 Difference]: With dead ends: 262123 [2022-07-13 19:54:35,005 INFO L226 Difference]: Without dead ends: 196259 [2022-07-13 19:54:35,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:54:35,353 INFO L413 NwaCegarLoop]: 4646 mSDtfsCounter, 5311 mSDsluCounter, 17267 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5335 SdHoareTripleChecker+Valid, 21913 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:35,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5335 Valid, 21913 Invalid, 2228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 19:54:35,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196259 states. [2022-07-13 19:54:43,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196259 to 133346. [2022-07-13 19:54:44,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133346 states, 121794 states have (on average 1.5535248041775458) internal successors, (189210), 122309 states have internal predecessors, (189210), 7960 states have call successors, (7960), 3079 states have call predecessors, (7960), 3590 states have return successors, (28153), 8469 states have call predecessors, (28153), 7958 states have call successors, (28153) [2022-07-13 19:54:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133346 states to 133346 states and 225323 transitions. [2022-07-13 19:54:44,709 INFO L78 Accepts]: Start accepts. Automaton has 133346 states and 225323 transitions. Word has length 135 [2022-07-13 19:54:44,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:44,710 INFO L495 AbstractCegarLoop]: Abstraction has 133346 states and 225323 transitions. [2022-07-13 19:54:44,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:54:44,710 INFO L276 IsEmpty]: Start isEmpty. Operand 133346 states and 225323 transitions. [2022-07-13 19:54:44,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 19:54:44,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:44,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:44,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 19:54:44,763 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:44,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:44,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1386854969, now seen corresponding path program 1 times [2022-07-13 19:54:44,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:44,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279328943] [2022-07-13 19:54:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:44,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 19:54:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:54:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 19:54:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 19:54:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:44,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:44,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279328943] [2022-07-13 19:54:44,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279328943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:44,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:44,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:44,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320117983] [2022-07-13 19:54:44,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:44,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:44,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:44,852 INFO L87 Difference]: Start difference. First operand 133346 states and 225323 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)