./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.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_label49+token_ring.07.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 a0d6ced7e0ff387d58cf8725410ee88dbee5b176eb503e82e37c165076b7e65d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:08:16,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:08:16,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:08:16,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:08:16,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:08:16,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:08:16,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:08:16,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:08:16,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:08:16,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:08:16,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:08:16,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:08:16,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:08:16,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:08:16,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:08:16,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:08:16,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:08:16,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:08:16,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:08:16,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:08:16,372 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:08:16,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:08:16,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:08:16,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:08:16,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:08:16,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:08:16,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:08:16,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:08:16,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:08:16,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:08:16,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:08:16,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:08:16,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:08:16,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:08:16,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:08:16,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:08:16,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:08:16,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:08:16,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:08:16,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:08:16,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:08:16,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:08:16,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:08:16,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:08:16,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:08:16,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:08:16,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:08:16,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:08:16,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:08:16,418 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:08:16,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:08:16,419 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:08:16,419 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:08:16,419 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:08:16,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:08:16,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:08:16,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:08:16,420 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:08:16,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:08:16,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:08:16,420 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:08:16,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:08:16,421 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:08:16,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:08:16,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:08:16,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:08:16,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:08:16,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:08:16,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:08:16,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:08:16,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:08:16,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:08:16,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:08:16,423 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:08:16,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:08:16,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:08:16,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0d6ced7e0ff387d58cf8725410ee88dbee5b176eb503e82e37c165076b7e65d [2022-07-13 20:08:16,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:08:16,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:08:16,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:08:16,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:08:16,665 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:08:16,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c [2022-07-13 20:08:16,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfee9b88c/08ff4af7d83c4de5948db63f724ca907/FLAG10f0dd69b [2022-07-13 20:08:17,522 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:08:17,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.07.cil-2.c [2022-07-13 20:08:17,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfee9b88c/08ff4af7d83c4de5948db63f724ca907/FLAG10f0dd69b [2022-07-13 20:08:17,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfee9b88c/08ff4af7d83c4de5948db63f724ca907 [2022-07-13 20:08:17,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:08:17,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:08:17,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:08:17,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:08:17,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:08:17,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:08:17" (1/1) ... [2022-07-13 20:08:17,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a958cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:17, skipping insertion in model container [2022-07-13 20:08:17,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:08:17" (1/1) ... [2022-07-13 20:08:17,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:08:17,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:08:19,561 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_label49+token_ring.07.cil-2.c[380593,380606] [2022-07-13 20:08:19,585 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_label49+token_ring.07.cil-2.c[383339,383352] [2022-07-13 20:08:19,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:08:19,782 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:08:20,508 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_label49+token_ring.07.cil-2.c[380593,380606] [2022-07-13 20:08:20,512 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_label49+token_ring.07.cil-2.c[383339,383352] [2022-07-13 20:08:20,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:08:20,571 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:08:20,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20 WrapperNode [2022-07-13 20:08:20,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:08:20,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:08:20,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:08:20,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:08:20,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:20,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:20,956 INFO L137 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2022-07-13 20:08:20,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:08:20,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:08:20,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:08:20,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:08:20,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:20,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:21,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:21,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:21,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:21,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:21,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:21,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:08:21,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:08:21,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:08:21,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:08:21,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (1/1) ... [2022-07-13 20:08:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:08:21,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:08:21,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:08:21,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:08:21,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:08:21,643 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:08:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:08:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:08:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:08:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:08:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:08:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 20:08:21,645 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 20:08:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:08:21,645 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:08:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:08:21,645 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:08:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:08:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:08:21,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:08:21,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:08:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:08:21,783 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:08:21,784 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:08:27,614 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:08:27,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:08:27,637 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-13 20:08:27,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:08:27 BoogieIcfgContainer [2022-07-13 20:08:27,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:08:27,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:08:27,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:08:27,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:08:27,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:08:17" (1/3) ... [2022-07-13 20:08:27,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86cb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:08:27, skipping insertion in model container [2022-07-13 20:08:27,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:08:20" (2/3) ... [2022-07-13 20:08:27,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86cb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:08:27, skipping insertion in model container [2022-07-13 20:08:27,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:08:27" (3/3) ... [2022-07-13 20:08:27,648 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.07.cil-2.c [2022-07-13 20:08:27,659 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:08:27,659 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:08:27,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:08:27,740 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@45b0c44a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@935deaf [2022-07-13 20:08:27,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:08:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 20:08:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:27,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:27,767 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] [2022-07-13 20:08:27,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:27,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash -818812197, now seen corresponding path program 1 times [2022-07-13 20:08:27,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:27,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261182978] [2022-07-13 20:08:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:27,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:28,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:28,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261182978] [2022-07-13 20:08:28,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261182978] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:28,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:28,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:08:28,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276044674] [2022-07-13 20:08:28,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:28,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:08:28,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:08:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:08:28,204 INFO L87 Difference]: Start difference. First operand has 2448 states, 2415 states have (on average 1.850103519668737) internal successors, (4468), 2420 states have internal predecessors, (4468), 23 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 20:08:29,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:29,314 INFO L93 Difference]: Finished difference Result 4970 states and 9155 transitions. [2022-07-13 20:08:29,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:08:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:29,337 INFO L225 Difference]: With dead ends: 4970 [2022-07-13 20:08:29,337 INFO L226 Difference]: Without dead ends: 2467 [2022-07-13 20:08:29,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:08:29,347 INFO L413 NwaCegarLoop]: 4465 mSDtfsCounter, 667 mSDsluCounter, 12353 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 16818 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:29,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 16818 Invalid, 512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:08:29,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2022-07-13 20:08:29,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2380. [2022-07-13 20:08:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2349 states have (on average 1.8369518944231589) internal successors, (4315), 2352 states have internal predecessors, (4315), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-13 20:08:29,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 4359 transitions. [2022-07-13 20:08:29,466 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 4359 transitions. Word has length 124 [2022-07-13 20:08:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:29,467 INFO L495 AbstractCegarLoop]: Abstraction has 2380 states and 4359 transitions. [2022-07-13 20:08:29,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 20:08:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 4359 transitions. [2022-07-13 20:08:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:29,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:29,475 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] [2022-07-13 20:08:29,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:08:29,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash 219772377, now seen corresponding path program 1 times [2022-07-13 20:08:29,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:29,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152748897] [2022-07-13 20:08:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:29,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:29,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152748897] [2022-07-13 20:08:29,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152748897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:29,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:29,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:08:29,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903584733] [2022-07-13 20:08:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:29,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:08:29,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:08:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:08:29,717 INFO L87 Difference]: Start difference. First operand 2380 states and 4359 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 20:08:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:31,373 INFO L93 Difference]: Finished difference Result 3050 states and 5430 transitions. [2022-07-13 20:08:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:08:31,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:31,390 INFO L225 Difference]: With dead ends: 3050 [2022-07-13 20:08:31,391 INFO L226 Difference]: Without dead ends: 2806 [2022-07-13 20:08:31,395 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 20:08:31,396 INFO L413 NwaCegarLoop]: 4428 mSDtfsCounter, 4951 mSDsluCounter, 12541 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 16969 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:31,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 16969 Invalid, 1393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 20:08:31,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2022-07-13 20:08:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2631. [2022-07-13 20:08:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2577 states have (on average 1.8145129996119518) internal successors, (4676), 2581 states have internal predecessors, (4676), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-13 20:08:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4755 transitions. [2022-07-13 20:08:31,481 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4755 transitions. Word has length 124 [2022-07-13 20:08:31,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:31,483 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 4755 transitions. [2022-07-13 20:08:31,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 20:08:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4755 transitions. [2022-07-13 20:08:31,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:31,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:31,487 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] [2022-07-13 20:08:31,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:08:31,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:31,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:31,489 INFO L85 PathProgramCache]: Analyzing trace with hash -797876011, now seen corresponding path program 1 times [2022-07-13 20:08:31,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:31,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52403926] [2022-07-13 20:08:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:31,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:31,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:31,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52403926] [2022-07-13 20:08:31,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52403926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:31,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:31,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855058702] [2022-07-13 20:08:31,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:31,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:31,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:31,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:31,653 INFO L87 Difference]: Start difference. First operand 2631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:33,810 INFO L93 Difference]: Finished difference Result 3648 states and 6379 transitions. [2022-07-13 20:08:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:08:33,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:33,826 INFO L225 Difference]: With dead ends: 3648 [2022-07-13 20:08:33,826 INFO L226 Difference]: Without dead ends: 3153 [2022-07-13 20:08:33,833 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 20:08:33,837 INFO L413 NwaCegarLoop]: 4631 mSDtfsCounter, 4958 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4972 SdHoareTripleChecker+Valid, 21778 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:33,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4972 Valid, 21778 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 20:08:33,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-07-13 20:08:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2865. [2022-07-13 20:08:33,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2788 states have (on average 1.7944763271162123) internal successors, (5003), 2793 states have internal predecessors, (5003), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-13 20:08:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5116 transitions. [2022-07-13 20:08:33,930 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5116 transitions. Word has length 124 [2022-07-13 20:08:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:33,930 INFO L495 AbstractCegarLoop]: Abstraction has 2865 states and 5116 transitions. [2022-07-13 20:08:33,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5116 transitions. [2022-07-13 20:08:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:33,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:33,933 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] [2022-07-13 20:08:33,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:08:33,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:33,934 INFO L85 PathProgramCache]: Analyzing trace with hash -679434537, now seen corresponding path program 1 times [2022-07-13 20:08:33,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:33,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297209854] [2022-07-13 20:08:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:33,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:33,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:34,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:34,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297209854] [2022-07-13 20:08:34,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297209854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:34,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:34,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:34,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263729149] [2022-07-13 20:08:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:34,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:34,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:34,069 INFO L87 Difference]: Start difference. First operand 2865 states and 5116 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:36,184 INFO L93 Difference]: Finished difference Result 4529 states and 7768 transitions. [2022-07-13 20:08:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:08:36,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:36,203 INFO L225 Difference]: With dead ends: 4529 [2022-07-13 20:08:36,204 INFO L226 Difference]: Without dead ends: 3800 [2022-07-13 20:08:36,207 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 20:08:36,208 INFO L413 NwaCegarLoop]: 4623 mSDtfsCounter, 4955 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 21770 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:36,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4969 Valid, 21770 Invalid, 2084 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 20:08:36,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2022-07-13 20:08:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3334. [2022-07-13 20:08:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3211 states have (on average 1.7620678916225474) internal successors, (5658), 3218 states have internal predecessors, (5658), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2022-07-13 20:08:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 5843 transitions. [2022-07-13 20:08:36,337 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 5843 transitions. Word has length 124 [2022-07-13 20:08:36,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:36,338 INFO L495 AbstractCegarLoop]: Abstraction has 3334 states and 5843 transitions. [2022-07-13 20:08:36,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 5843 transitions. [2022-07-13 20:08:36,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:36,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:36,340 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] [2022-07-13 20:08:36,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:08:36,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:36,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:36,342 INFO L85 PathProgramCache]: Analyzing trace with hash 709859477, now seen corresponding path program 1 times [2022-07-13 20:08:36,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:36,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859618204] [2022-07-13 20:08:36,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:36,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:36,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:36,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859618204] [2022-07-13 20:08:36,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859618204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:36,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:36,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:36,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273690638] [2022-07-13 20:08:36,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:36,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:36,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:36,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:36,455 INFO L87 Difference]: Start difference. First operand 3334 states and 5843 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:38,459 INFO L93 Difference]: Finished difference Result 6226 states and 10431 transitions. [2022-07-13 20:08:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:08:38,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:38,481 INFO L225 Difference]: With dead ends: 6226 [2022-07-13 20:08:38,482 INFO L226 Difference]: Without dead ends: 5028 [2022-07-13 20:08:38,488 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 20:08:38,489 INFO L413 NwaCegarLoop]: 4619 mSDtfsCounter, 4951 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 21766 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:38,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4965 Valid, 21766 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 20:08:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-07-13 20:08:38,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4273. [2022-07-13 20:08:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4058 states have (on average 1.7171020206998522) internal successors, (6968), 4069 states have internal predecessors, (6968), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2022-07-13 20:08:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 7303 transitions. [2022-07-13 20:08:38,753 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 7303 transitions. Word has length 124 [2022-07-13 20:08:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:38,753 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 7303 transitions. [2022-07-13 20:08:38,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:38,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 7303 transitions. [2022-07-13 20:08:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:38,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:38,768 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] [2022-07-13 20:08:38,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:08:38,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:38,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:38,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1323534569, now seen corresponding path program 1 times [2022-07-13 20:08:38,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:38,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130620072] [2022-07-13 20:08:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:38,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:38,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:38,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130620072] [2022-07-13 20:08:38,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130620072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:38,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:38,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:38,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755126027] [2022-07-13 20:08:38,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:38,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:38,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:38,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:38,883 INFO L87 Difference]: Start difference. First operand 4273 states and 7303 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:40,792 INFO L93 Difference]: Finished difference Result 9619 states and 15773 transitions. [2022-07-13 20:08:40,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:08:40,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:40,827 INFO L225 Difference]: With dead ends: 9619 [2022-07-13 20:08:40,827 INFO L226 Difference]: Without dead ends: 7482 [2022-07-13 20:08:40,838 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 20:08:40,839 INFO L413 NwaCegarLoop]: 4615 mSDtfsCounter, 4947 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 21762 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:40,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4961 Valid, 21762 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 20:08:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2022-07-13 20:08:41,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 6156. [2022-07-13 20:08:41,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 5757 states have (on average 1.6664929650859823) internal successors, (9594), 5776 states have internal predecessors, (9594), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2022-07-13 20:08:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 10247 transitions. [2022-07-13 20:08:41,126 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 10247 transitions. Word has length 124 [2022-07-13 20:08:41,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:41,127 INFO L495 AbstractCegarLoop]: Abstraction has 6156 states and 10247 transitions. [2022-07-13 20:08:41,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 10247 transitions. [2022-07-13 20:08:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:41,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:41,131 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] [2022-07-13 20:08:41,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:08:41,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:41,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1104724053, now seen corresponding path program 1 times [2022-07-13 20:08:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:41,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287619099] [2022-07-13 20:08:41,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:41,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:41,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:41,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:41,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:41,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287619099] [2022-07-13 20:08:41,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287619099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:41,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:41,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:41,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094466448] [2022-07-13 20:08:41,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:41,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:41,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:41,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:41,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:41,254 INFO L87 Difference]: Start difference. First operand 6156 states and 10247 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:43,330 INFO L93 Difference]: Finished difference Result 16404 states and 26515 transitions. [2022-07-13 20:08:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:08:43,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:43,377 INFO L225 Difference]: With dead ends: 16404 [2022-07-13 20:08:43,377 INFO L226 Difference]: Without dead ends: 12384 [2022-07-13 20:08:43,398 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 20:08:43,399 INFO L413 NwaCegarLoop]: 4609 mSDtfsCounter, 4946 mSDsluCounter, 17147 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 21756 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:43,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 21756 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 20:08:43,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2022-07-13 20:08:43,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 9935. [2022-07-13 20:08:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6212914485165795) internal successors, (14864), 9203 states have internal predecessors, (14864), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-13 20:08:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16207 transitions. [2022-07-13 20:08:43,912 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16207 transitions. Word has length 124 [2022-07-13 20:08:43,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:43,912 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16207 transitions. [2022-07-13 20:08:43,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:43,913 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16207 transitions. [2022-07-13 20:08:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:43,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:43,919 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] [2022-07-13 20:08:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:08:43,922 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash -202418345, now seen corresponding path program 1 times [2022-07-13 20:08:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:43,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388779223] [2022-07-13 20:08:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:43,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:43,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:44,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:44,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:44,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388779223] [2022-07-13 20:08:44,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388779223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:44,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:44,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:44,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648410772] [2022-07-13 20:08:44,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:44,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:44,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:44,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:44,033 INFO L87 Difference]: Start difference. First operand 9935 states and 16207 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:45,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:45,340 INFO L93 Difference]: Finished difference Result 20276 states and 32868 transitions. [2022-07-13 20:08:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:08:45,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:45,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:45,382 INFO L225 Difference]: With dead ends: 20276 [2022-07-13 20:08:45,383 INFO L226 Difference]: Without dead ends: 12477 [2022-07-13 20:08:45,411 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 20:08:45,412 INFO L413 NwaCegarLoop]: 4362 mSDtfsCounter, 4791 mSDsluCounter, 12383 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 16745 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:45,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4806 Valid, 16745 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 20:08:45,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2022-07-13 20:08:45,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 9935. [2022-07-13 20:08:45,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9935 states, 9168 states have (on average 1.6176919720767888) internal successors, (14831), 9203 states have internal predecessors, (14831), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2022-07-13 20:08:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16174 transitions. [2022-07-13 20:08:45,825 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16174 transitions. Word has length 124 [2022-07-13 20:08:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:45,826 INFO L495 AbstractCegarLoop]: Abstraction has 9935 states and 16174 transitions. [2022-07-13 20:08:45,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16174 transitions. [2022-07-13 20:08:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:45,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:45,832 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] [2022-07-13 20:08:45,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:08:45,832 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash 828622553, now seen corresponding path program 1 times [2022-07-13 20:08:45,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:45,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768898912] [2022-07-13 20:08:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:45,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:45,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:45,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:45,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768898912] [2022-07-13 20:08:45,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768898912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:45,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:45,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:45,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177547395] [2022-07-13 20:08:45,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:45,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:45,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:45,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:45,931 INFO L87 Difference]: Start difference. First operand 9935 states and 16174 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:49,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:49,456 INFO L93 Difference]: Finished difference Result 33332 states and 53083 transitions. [2022-07-13 20:08:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:08:49,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:49,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:49,537 INFO L225 Difference]: With dead ends: 33332 [2022-07-13 20:08:49,537 INFO L226 Difference]: Without dead ends: 25533 [2022-07-13 20:08:49,566 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 20:08:49,566 INFO L413 NwaCegarLoop]: 4593 mSDtfsCounter, 5225 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5247 SdHoareTripleChecker+Valid, 21732 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:49,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5247 Valid, 21732 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 20:08:49,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25533 states. [2022-07-13 20:08:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25533 to 17492. [2022-07-13 20:08:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17492 states, 16021 states have (on average 1.586480244678859) internal successors, (25417), 16088 states have internal predecessors, (25417), 1015 states have call successors, (1015), 391 states have call predecessors, (1015), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2022-07-13 20:08:50,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17492 states to 17492 states and 28238 transitions. [2022-07-13 20:08:50,463 INFO L78 Accepts]: Start accepts. Automaton has 17492 states and 28238 transitions. Word has length 124 [2022-07-13 20:08:50,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:50,463 INFO L495 AbstractCegarLoop]: Abstraction has 17492 states and 28238 transitions. [2022-07-13 20:08:50,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:50,464 INFO L276 IsEmpty]: Start isEmpty. Operand 17492 states and 28238 transitions. [2022-07-13 20:08:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:50,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:50,476 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] [2022-07-13 20:08:50,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:08:50,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:50,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780713, now seen corresponding path program 1 times [2022-07-13 20:08:50,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:50,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028328818] [2022-07-13 20:08:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:50,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:50,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:50,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028328818] [2022-07-13 20:08:50,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028328818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:50,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:50,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:50,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546145626] [2022-07-13 20:08:50,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:50,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:50,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:50,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:50,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:50,572 INFO L87 Difference]: Start difference. First operand 17492 states and 28238 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:55,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:08:55,323 INFO L93 Difference]: Finished difference Result 62843 states and 100433 transitions. [2022-07-13 20:08:55,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:08:55,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:08:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:08:55,505 INFO L225 Difference]: With dead ends: 62843 [2022-07-13 20:08:55,506 INFO L226 Difference]: Without dead ends: 47487 [2022-07-13 20:08:55,564 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 20:08:55,564 INFO L413 NwaCegarLoop]: 4695 mSDtfsCounter, 4995 mSDsluCounter, 17136 mSDsCounter, 0 mSdLazyCounter, 2263 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5008 SdHoareTripleChecker+Valid, 21831 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:08:55,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5008 Valid, 21831 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2263 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 20:08:55,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47487 states. [2022-07-13 20:08:57,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47487 to 31929. [2022-07-13 20:08:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31929 states, 29082 states have (on average 1.5631318341242004) internal successors, (45459), 29213 states have internal predecessors, (45459), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2022-07-13 20:08:57,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31929 states to 31929 states and 51658 transitions. [2022-07-13 20:08:57,524 INFO L78 Accepts]: Start accepts. Automaton has 31929 states and 51658 transitions. Word has length 124 [2022-07-13 20:08:57,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:08:57,525 INFO L495 AbstractCegarLoop]: Abstraction has 31929 states and 51658 transitions. [2022-07-13 20:08:57,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:08:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 31929 states and 51658 transitions. [2022-07-13 20:08:57,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:08:57,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:08:57,547 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] [2022-07-13 20:08:57,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:08:57,548 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:08:57,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:08:57,548 INFO L85 PathProgramCache]: Analyzing trace with hash 523290393, now seen corresponding path program 1 times [2022-07-13 20:08:57,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:08:57,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868120140] [2022-07-13 20:08:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:08:57,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:08:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:08:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:08:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:57,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:08:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:57,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:08:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:57,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:08:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:08:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:08:57,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:08:57,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868120140] [2022-07-13 20:08:57,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868120140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:08:57,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:08:57,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:08:57,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360301970] [2022-07-13 20:08:57,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:08:57,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:08:57,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:08:57,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:08:57,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:08:57,661 INFO L87 Difference]: Start difference. First operand 31929 states and 51658 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:09:05,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:05,329 INFO L93 Difference]: Finished difference Result 118758 states and 191663 transitions. [2022-07-13 20:09:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:09:05,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:09:05,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:05,841 INFO L225 Difference]: With dead ends: 118758 [2022-07-13 20:09:05,841 INFO L226 Difference]: Without dead ends: 88965 [2022-07-13 20:09:05,927 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 20:09:05,928 INFO L413 NwaCegarLoop]: 4583 mSDtfsCounter, 5145 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5167 SdHoareTripleChecker+Valid, 21722 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:05,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5167 Valid, 21722 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 20:09:06,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88965 states. [2022-07-13 20:09:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88965 to 61378. [2022-07-13 20:09:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61378 states, 55843 states have (on average 1.553587737048511) internal successors, (86757), 56102 states have internal predecessors, (86757), 3735 states have call successors, (3735), 1543 states have call predecessors, (3735), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2022-07-13 20:09:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61378 states to 61378 states and 101042 transitions. [2022-07-13 20:09:10,108 INFO L78 Accepts]: Start accepts. Automaton has 61378 states and 101042 transitions. Word has length 124 [2022-07-13 20:09:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:10,108 INFO L495 AbstractCegarLoop]: Abstraction has 61378 states and 101042 transitions. [2022-07-13 20:09:10,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:09:10,108 INFO L276 IsEmpty]: Start isEmpty. Operand 61378 states and 101042 transitions. [2022-07-13 20:09:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:09:10,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:10,149 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] [2022-07-13 20:09:10,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:09:10,150 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:10,151 INFO L85 PathProgramCache]: Analyzing trace with hash -533440809, now seen corresponding path program 1 times [2022-07-13 20:09:10,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:10,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104677238] [2022-07-13 20:09:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:10,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:09:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:10,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:09:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:10,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:09:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:09:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:10,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104677238] [2022-07-13 20:09:10,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104677238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:10,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:10,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:10,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722891683] [2022-07-13 20:09:10,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:10,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:10,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:10,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:10,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:10,268 INFO L87 Difference]: Start difference. First operand 61378 states and 101042 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:09:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:09:24,101 INFO L93 Difference]: Finished difference Result 230013 states and 379509 transitions. [2022-07-13 20:09:24,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:09:24,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-07-13 20:09:24,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:09:24,898 INFO L225 Difference]: With dead ends: 230013 [2022-07-13 20:09:24,899 INFO L226 Difference]: Without dead ends: 170771 [2022-07-13 20:09:25,073 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 20:09:25,074 INFO L413 NwaCegarLoop]: 4578 mSDtfsCounter, 5105 mSDsluCounter, 17139 mSDsCounter, 0 mSdLazyCounter, 1924 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:09:25,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5127 Valid, 21717 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1924 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 20:09:25,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170771 states. [2022-07-13 20:09:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170771 to 120147. [2022-07-13 20:09:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120147 states, 109364 states have (on average 1.5496781390585568) internal successors, (169479), 109879 states have internal predecessors, (169479), 7191 states have call successors, (7191), 3079 states have call predecessors, (7191), 3590 states have return successors, (27384), 7700 states have call predecessors, (27384), 7189 states have call successors, (27384) [2022-07-13 20:09:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120147 states to 120147 states and 204054 transitions. [2022-07-13 20:09:33,178 INFO L78 Accepts]: Start accepts. Automaton has 120147 states and 204054 transitions. Word has length 124 [2022-07-13 20:09:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:09:33,178 INFO L495 AbstractCegarLoop]: Abstraction has 120147 states and 204054 transitions. [2022-07-13 20:09:33,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 20:09:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 120147 states and 204054 transitions. [2022-07-13 20:09:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 20:09:33,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:09:33,249 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] [2022-07-13 20:09:33,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:09:33,250 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:09:33,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:09:33,250 INFO L85 PathProgramCache]: Analyzing trace with hash 817944409, now seen corresponding path program 1 times [2022-07-13 20:09:33,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:09:33,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826084687] [2022-07-13 20:09:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:09:33,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:09:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:33,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:09:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 20:09:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 20:09:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 20:09:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 20:09:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:09:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:09:33,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:09:33,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826084687] [2022-07-13 20:09:33,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826084687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:09:33,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:09:33,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:09:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137365548] [2022-07-13 20:09:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:09:33,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:09:33,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:09:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:09:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:09:33,343 INFO L87 Difference]: Start difference. First operand 120147 states and 204054 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)