./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_label45+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 ea2a15ada4a316287b701d4046ee75147e37e2af1b0a94d8406d231cafa83990 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:16:02,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:16:02,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:16:02,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:16:02,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:16:02,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:16:02,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:16:02,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:16:02,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:16:02,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:16:02,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:16:02,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:16:02,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:16:02,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:16:02,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:16:02,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:16:02,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:16:02,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:16:02,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:16:02,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:16:02,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:16:02,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:16:02,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:16:02,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:16:02,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:16:02,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:16:02,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:16:02,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:16:02,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:16:02,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:16:02,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:16:02,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:16:02,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:16:02,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:16:02,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:16:02,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:16:02,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:16:02,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:16:02,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:16:02,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:16:02,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:16:02,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:16:02,377 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:16:02,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:16:02,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:16:02,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:16:02,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:16:02,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:16:02,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:16:02,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:16:02,379 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:16:02,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:16:02,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:16:02,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:16:02,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:16:02,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:16:02,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:16:02,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:16:02,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:16:02,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:16:02,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:16:02,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:16:02,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:16:02,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:16:02,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:16:02,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:16:02,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:16:02,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:16:02,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:16:02,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:16:02,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:16:02,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:16:02,384 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:16:02,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:16:02,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:16:02,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:16:02,384 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea2a15ada4a316287b701d4046ee75147e37e2af1b0a94d8406d231cafa83990 [2021-12-21 14:16:02,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:16:02,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:16:02,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:16:02,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:16:02,600 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:16:02,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-2.c [2021-12-21 14:16:02,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d652c2b/339242746b604c2d8ea981747cbd8b4f/FLAG3eea57f9b [2021-12-21 14:16:03,440 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:16:03,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-2.c [2021-12-21 14:16:03,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d652c2b/339242746b604c2d8ea981747cbd8b4f/FLAG3eea57f9b [2021-12-21 14:16:03,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d652c2b/339242746b604c2d8ea981747cbd8b4f [2021-12-21 14:16:03,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:16:03,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:16:03,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:16:03,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:16:03,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:16:03,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:03" (1/1) ... [2021-12-21 14:16:03,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7427fc46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:03, skipping insertion in model container [2021-12-21 14:16:03,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:16:03" (1/1) ... [2021-12-21 14:16:03,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:16:03,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:16:05,009 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_label45+token_ring.07.cil-2.c[380323,380336] [2021-12-21 14:16:05,030 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_label45+token_ring.07.cil-2.c[383339,383352] [2021-12-21 14:16:05,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:16:05,192 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:16:05,779 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_label45+token_ring.07.cil-2.c[380323,380336] [2021-12-21 14:16:05,782 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_label45+token_ring.07.cil-2.c[383339,383352] [2021-12-21 14:16:05,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:16:05,839 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:16:05,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05 WrapperNode [2021-12-21 14:16:05,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:16:05,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:16:05,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:16:05,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:16:05,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:05,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:06,179 INFO L137 Inliner]: procedures = 58, calls = 63, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 12914 [2021-12-21 14:16:06,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:16:06,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:16:06,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:16:06,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:16:06,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:06,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:06,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:06,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:06,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:06,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:06,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:06,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:16:06,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:16:06,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:16:06,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:16:06,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (1/1) ... [2021-12-21 14:16:06,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:16:06,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:16:06,764 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) [2021-12-21 14:16:06,815 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 [2021-12-21 14:16:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:16:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:16:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:16:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:16:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:16:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:16:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:16:06,854 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-21 14:16:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-21 14:16:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:16:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:16:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:16:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:16:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:16:06,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:16:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:16:06,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:16:06,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:16:07,030 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:16:07,031 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:16:11,815 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:16:11,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:16:11,834 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-21 14:16:11,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:11 BoogieIcfgContainer [2021-12-21 14:16:11,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:16:11,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:16:11,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:16:11,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:16:11,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:16:03" (1/3) ... [2021-12-21 14:16:11,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4415bc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:11, skipping insertion in model container [2021-12-21 14:16:11,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:16:05" (2/3) ... [2021-12-21 14:16:11,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4415bc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:16:11, skipping insertion in model container [2021-12-21 14:16:11,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:16:11" (3/3) ... [2021-12-21 14:16:11,842 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.07.cil-2.c [2021-12-21 14:16:11,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:16:11,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:16:11,879 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:16:11,884 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:16:11,884 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:16:11,922 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) [2021-12-21 14:16:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:11,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:11,932 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:11,933 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -818812197, now seen corresponding path program 1 times [2021-12-21 14:16:11,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:11,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123028341] [2021-12-21 14:16:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:11,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:12,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:12,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:12,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:12,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123028341] [2021-12-21 14:16:12,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123028341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:12,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:12,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:16:12,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754092645] [2021-12-21 14:16:12,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:12,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:16:12,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:12,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:16:12,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:16:12,211 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) [2021-12-21 14:16:13,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:13,178 INFO L93 Difference]: Finished difference Result 4970 states and 9155 transitions. [2021-12-21 14:16:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:16:13,180 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 [2021-12-21 14:16:13,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:13,204 INFO L225 Difference]: With dead ends: 4970 [2021-12-21 14:16:13,205 INFO L226 Difference]: Without dead ends: 2467 [2021-12-21 14:16:13,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:16:13,219 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 667 mSDsluCounter, 12368 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 16833 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:13,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 16833 Invalid, 497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 14:16:13,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2467 states. [2021-12-21 14:16:13,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2467 to 2380. [2021-12-21 14:16:13,326 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) [2021-12-21 14:16:13,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 4359 transitions. [2021-12-21 14:16:13,335 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 4359 transitions. Word has length 124 [2021-12-21 14:16:13,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:13,336 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 4359 transitions. [2021-12-21 14:16:13,336 INFO L471 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) [2021-12-21 14:16:13,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 4359 transitions. [2021-12-21 14:16:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:13,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:13,344 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:13,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:16:13,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:13,347 INFO L85 PathProgramCache]: Analyzing trace with hash 219772377, now seen corresponding path program 1 times [2021-12-21 14:16:13,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:13,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979524363] [2021-12-21 14:16:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:13,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:13,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:13,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:13,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:13,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979524363] [2021-12-21 14:16:13,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979524363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:13,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:13,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:16:13,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320795876] [2021-12-21 14:16:13,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:13,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:16:13,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:16:13,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:16:13,529 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) [2021-12-21 14:16:14,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:14,887 INFO L93 Difference]: Finished difference Result 3050 states and 5430 transitions. [2021-12-21 14:16:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:16:14,888 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 [2021-12-21 14:16:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:14,912 INFO L225 Difference]: With dead ends: 3050 [2021-12-21 14:16:14,913 INFO L226 Difference]: Without dead ends: 2806 [2021-12-21 14:16:14,914 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:16:14,915 INFO L933 BasicCegarLoop]: 4428 mSDtfsCounter, 4951 mSDsluCounter, 12588 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 17016 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:14,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 17016 Invalid, 1346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:16:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2021-12-21 14:16:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2631. [2021-12-21 14:16:14,972 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) [2021-12-21 14:16:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4755 transitions. [2021-12-21 14:16:14,981 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4755 transitions. Word has length 124 [2021-12-21 14:16:14,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:14,982 INFO L470 AbstractCegarLoop]: Abstraction has 2631 states and 4755 transitions. [2021-12-21 14:16:14,982 INFO L471 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) [2021-12-21 14:16:14,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4755 transitions. [2021-12-21 14:16:14,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:14,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:14,989 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:14,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:16:14,990 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash -797876011, now seen corresponding path program 1 times [2021-12-21 14:16:14,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:14,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873619601] [2021-12-21 14:16:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:14,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:15,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:15,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:15,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:15,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:15,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873619601] [2021-12-21 14:16:15,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873619601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:15,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:15,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:15,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104956786] [2021-12-21 14:16:15,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:15,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:15,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:15,130 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) [2021-12-21 14:16:16,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:16,801 INFO L93 Difference]: Finished difference Result 3648 states and 6379 transitions. [2021-12-21 14:16:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:16,802 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 [2021-12-21 14:16:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:16,812 INFO L225 Difference]: With dead ends: 3648 [2021-12-21 14:16:16,813 INFO L226 Difference]: Without dead ends: 3153 [2021-12-21 14:16:16,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:16:16,815 INFO L933 BasicCegarLoop]: 4631 mSDtfsCounter, 4958 mSDsluCounter, 17199 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4972 SdHoareTripleChecker+Valid, 21830 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:16,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4972 Valid, 21830 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:16:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2021-12-21 14:16:16,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2865. [2021-12-21 14:16:16,867 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) [2021-12-21 14:16:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 5116 transitions. [2021-12-21 14:16:16,878 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 5116 transitions. Word has length 124 [2021-12-21 14:16:16,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:16,879 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 5116 transitions. [2021-12-21 14:16:16,879 INFO L471 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) [2021-12-21 14:16:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 5116 transitions. [2021-12-21 14:16:16,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:16,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:16,881 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:16,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:16:16,881 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:16,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash -679434537, now seen corresponding path program 1 times [2021-12-21 14:16:16,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:16,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473076215] [2021-12-21 14:16:16,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:16,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:16,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:16,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:16,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:16,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473076215] [2021-12-21 14:16:16,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473076215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:16,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:16,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:16,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696681450] [2021-12-21 14:16:16,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:16,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:16,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:16,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:16,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:16,972 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) [2021-12-21 14:16:18,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:18,522 INFO L93 Difference]: Finished difference Result 4529 states and 7768 transitions. [2021-12-21 14:16:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:18,523 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 [2021-12-21 14:16:18,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:18,536 INFO L225 Difference]: With dead ends: 4529 [2021-12-21 14:16:18,538 INFO L226 Difference]: Without dead ends: 3800 [2021-12-21 14:16:18,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:16:18,547 INFO L933 BasicCegarLoop]: 4623 mSDtfsCounter, 4955 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 21818 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:18,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4969 Valid, 21818 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:16:18,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-12-21 14:16:18,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3334. [2021-12-21 14:16:18,656 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) [2021-12-21 14:16:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 5843 transitions. [2021-12-21 14:16:18,675 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 5843 transitions. Word has length 124 [2021-12-21 14:16:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:18,679 INFO L470 AbstractCegarLoop]: Abstraction has 3334 states and 5843 transitions. [2021-12-21 14:16:18,679 INFO L471 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) [2021-12-21 14:16:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 5843 transitions. [2021-12-21 14:16:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:18,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:18,683 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:18,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:16:18,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash 709859477, now seen corresponding path program 1 times [2021-12-21 14:16:18,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:18,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806216240] [2021-12-21 14:16:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:18,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:18,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:18,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:18,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806216240] [2021-12-21 14:16:18,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806216240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:18,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:18,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:18,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375379260] [2021-12-21 14:16:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:18,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:18,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:18,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:18,814 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) [2021-12-21 14:16:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:20,791 INFO L93 Difference]: Finished difference Result 6226 states and 10431 transitions. [2021-12-21 14:16:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:20,792 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 [2021-12-21 14:16:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:20,808 INFO L225 Difference]: With dead ends: 6226 [2021-12-21 14:16:20,808 INFO L226 Difference]: Without dead ends: 5028 [2021-12-21 14:16:20,813 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:16:20,813 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 4951 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 21814 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:20,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 21814 Invalid, 2031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 14:16:20,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2021-12-21 14:16:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4273. [2021-12-21 14:16:20,926 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) [2021-12-21 14:16:20,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 7303 transitions. [2021-12-21 14:16:20,936 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 7303 transitions. Word has length 124 [2021-12-21 14:16:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:20,937 INFO L470 AbstractCegarLoop]: Abstraction has 4273 states and 7303 transitions. [2021-12-21 14:16:20,947 INFO L471 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) [2021-12-21 14:16:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 7303 transitions. [2021-12-21 14:16:20,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:20,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:20,949 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:20,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:16:20,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:20,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1323534569, now seen corresponding path program 1 times [2021-12-21 14:16:20,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:20,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490570587] [2021-12-21 14:16:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:20,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:20,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:21,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:21,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490570587] [2021-12-21 14:16:21,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490570587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:21,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:21,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:21,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069896604] [2021-12-21 14:16:21,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:21,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:21,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:21,060 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) [2021-12-21 14:16:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:22,968 INFO L93 Difference]: Finished difference Result 9619 states and 15773 transitions. [2021-12-21 14:16:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:22,969 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 [2021-12-21 14:16:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:22,997 INFO L225 Difference]: With dead ends: 9619 [2021-12-21 14:16:22,997 INFO L226 Difference]: Without dead ends: 7482 [2021-12-21 14:16:23,006 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:16:23,007 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 4947 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 21810 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:23,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4961 Valid, 21810 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:16:23,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2021-12-21 14:16:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 6156. [2021-12-21 14:16:23,243 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) [2021-12-21 14:16:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 10247 transitions. [2021-12-21 14:16:23,259 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 10247 transitions. Word has length 124 [2021-12-21 14:16:23,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:23,260 INFO L470 AbstractCegarLoop]: Abstraction has 6156 states and 10247 transitions. [2021-12-21 14:16:23,260 INFO L471 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) [2021-12-21 14:16:23,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 10247 transitions. [2021-12-21 14:16:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:23,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:23,263 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:23,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:16:23,264 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:23,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1104724053, now seen corresponding path program 1 times [2021-12-21 14:16:23,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:23,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305631340] [2021-12-21 14:16:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:23,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:23,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:23,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:23,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:23,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305631340] [2021-12-21 14:16:23,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305631340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:23,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:23,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:23,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078939918] [2021-12-21 14:16:23,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:23,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:23,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:23,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:23,366 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) [2021-12-21 14:16:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:25,408 INFO L93 Difference]: Finished difference Result 16404 states and 26515 transitions. [2021-12-21 14:16:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:16:25,409 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 [2021-12-21 14:16:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:25,466 INFO L225 Difference]: With dead ends: 16404 [2021-12-21 14:16:25,466 INFO L226 Difference]: Without dead ends: 12384 [2021-12-21 14:16:25,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:16:25,477 INFO L933 BasicCegarLoop]: 4609 mSDtfsCounter, 4946 mSDsluCounter, 17195 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 21804 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:25,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4960 Valid, 21804 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:16:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12384 states. [2021-12-21 14:16:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12384 to 9935. [2021-12-21 14:16:25,894 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) [2021-12-21 14:16:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16207 transitions. [2021-12-21 14:16:25,921 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16207 transitions. Word has length 124 [2021-12-21 14:16:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:25,921 INFO L470 AbstractCegarLoop]: Abstraction has 9935 states and 16207 transitions. [2021-12-21 14:16:25,922 INFO L471 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) [2021-12-21 14:16:25,922 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16207 transitions. [2021-12-21 14:16:25,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:25,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:25,927 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:25,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:16:25,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:25,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:25,928 INFO L85 PathProgramCache]: Analyzing trace with hash -202418345, now seen corresponding path program 1 times [2021-12-21 14:16:25,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:25,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466465308] [2021-12-21 14:16:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:25,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:25,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:25,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:26,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:26,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:26,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:26,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466465308] [2021-12-21 14:16:26,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466465308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:26,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:26,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:26,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422519025] [2021-12-21 14:16:26,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:26,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:26,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:26,034 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) [2021-12-21 14:16:27,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:27,403 INFO L93 Difference]: Finished difference Result 20276 states and 32868 transitions. [2021-12-21 14:16:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:16:27,404 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 [2021-12-21 14:16:27,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:27,436 INFO L225 Difference]: With dead ends: 20276 [2021-12-21 14:16:27,437 INFO L226 Difference]: Without dead ends: 12477 [2021-12-21 14:16:27,457 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:16:27,458 INFO L933 BasicCegarLoop]: 4362 mSDtfsCounter, 4791 mSDsluCounter, 12384 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 16746 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:27,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4806 Valid, 16746 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 14:16:27,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12477 states. [2021-12-21 14:16:27,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12477 to 9935. [2021-12-21 14:16:27,808 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) [2021-12-21 14:16:27,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 16174 transitions. [2021-12-21 14:16:27,829 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 16174 transitions. Word has length 124 [2021-12-21 14:16:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:27,830 INFO L470 AbstractCegarLoop]: Abstraction has 9935 states and 16174 transitions. [2021-12-21 14:16:27,830 INFO L471 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) [2021-12-21 14:16:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 16174 transitions. [2021-12-21 14:16:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:27,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:27,836 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:27,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:16:27,836 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash 828622553, now seen corresponding path program 1 times [2021-12-21 14:16:27,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:27,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225312648] [2021-12-21 14:16:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:27,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:27,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:27,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:27,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:27,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:27,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225312648] [2021-12-21 14:16:27,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225312648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:27,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:27,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:27,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168236172] [2021-12-21 14:16:27,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:27,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:27,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:27,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:27,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:27,930 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) [2021-12-21 14:16:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:30,657 INFO L93 Difference]: Finished difference Result 33332 states and 53083 transitions. [2021-12-21 14:16:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:16:30,657 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 [2021-12-21 14:16:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:30,733 INFO L225 Difference]: With dead ends: 33332 [2021-12-21 14:16:30,733 INFO L226 Difference]: Without dead ends: 25533 [2021-12-21 14:16:30,784 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:16:30,798 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5225 mSDsluCounter, 17187 mSDsCounter, 0 mSdLazyCounter, 1900 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5247 SdHoareTripleChecker+Valid, 21780 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:30,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5247 Valid, 21780 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1900 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:16:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25533 states. [2021-12-21 14:16:31,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25533 to 17492. [2021-12-21 14:16:31,775 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) [2021-12-21 14:16:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17492 states to 17492 states and 28238 transitions. [2021-12-21 14:16:31,815 INFO L78 Accepts]: Start accepts. Automaton has 17492 states and 28238 transitions. Word has length 124 [2021-12-21 14:16:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:31,815 INFO L470 AbstractCegarLoop]: Abstraction has 17492 states and 28238 transitions. [2021-12-21 14:16:31,816 INFO L471 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) [2021-12-21 14:16:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 17492 states and 28238 transitions. [2021-12-21 14:16:31,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:31,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:31,825 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:31,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:16:31,825 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1077780713, now seen corresponding path program 1 times [2021-12-21 14:16:31,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:31,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911690266] [2021-12-21 14:16:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:31,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:31,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:31,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:31,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911690266] [2021-12-21 14:16:31,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911690266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:31,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:31,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:31,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398971992] [2021-12-21 14:16:31,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:31,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:31,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:31,903 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) [2021-12-21 14:16:36,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:36,526 INFO L93 Difference]: Finished difference Result 62843 states and 100433 transitions. [2021-12-21 14:16:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:16:36,527 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 [2021-12-21 14:16:36,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:36,680 INFO L225 Difference]: With dead ends: 62843 [2021-12-21 14:16:36,680 INFO L226 Difference]: Without dead ends: 47487 [2021-12-21 14:16:36,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:16:36,724 INFO L933 BasicCegarLoop]: 4695 mSDtfsCounter, 4995 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5008 SdHoareTripleChecker+Valid, 21879 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:36,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5008 Valid, 21879 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:16:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47487 states. [2021-12-21 14:16:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47487 to 31929. [2021-12-21 14:16:38,381 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) [2021-12-21 14:16:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31929 states to 31929 states and 51658 transitions. [2021-12-21 14:16:38,660 INFO L78 Accepts]: Start accepts. Automaton has 31929 states and 51658 transitions. Word has length 124 [2021-12-21 14:16:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:38,661 INFO L470 AbstractCegarLoop]: Abstraction has 31929 states and 51658 transitions. [2021-12-21 14:16:38,661 INFO L471 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) [2021-12-21 14:16:38,661 INFO L276 IsEmpty]: Start isEmpty. Operand 31929 states and 51658 transitions. [2021-12-21 14:16:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:38,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:38,676 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:38,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:16:38,676 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash 523290393, now seen corresponding path program 1 times [2021-12-21 14:16:38,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:38,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762311286] [2021-12-21 14:16:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:38,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:38,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:38,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:38,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762311286] [2021-12-21 14:16:38,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762311286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:38,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:38,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:38,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647397921] [2021-12-21 14:16:38,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:38,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:38,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:38,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:38,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:38,773 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) [2021-12-21 14:16:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:16:46,049 INFO L93 Difference]: Finished difference Result 118758 states and 191663 transitions. [2021-12-21 14:16:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:16:46,050 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 [2021-12-21 14:16:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:16:46,349 INFO L225 Difference]: With dead ends: 118758 [2021-12-21 14:16:46,350 INFO L226 Difference]: Without dead ends: 88965 [2021-12-21 14:16:46,567 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:16:46,568 INFO L933 BasicCegarLoop]: 4583 mSDtfsCounter, 5145 mSDsluCounter, 17187 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5167 SdHoareTripleChecker+Valid, 21770 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:16:46,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5167 Valid, 21770 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:16:46,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88965 states. [2021-12-21 14:16:50,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88965 to 61378. [2021-12-21 14:16:50,109 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) [2021-12-21 14:16:50,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61378 states to 61378 states and 101042 transitions. [2021-12-21 14:16:50,310 INFO L78 Accepts]: Start accepts. Automaton has 61378 states and 101042 transitions. Word has length 124 [2021-12-21 14:16:50,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:16:50,311 INFO L470 AbstractCegarLoop]: Abstraction has 61378 states and 101042 transitions. [2021-12-21 14:16:50,311 INFO L471 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) [2021-12-21 14:16:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 61378 states and 101042 transitions. [2021-12-21 14:16:50,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 14:16:50,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:16:50,343 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:16:50,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:16:50,343 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:16:50,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:16:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash -533440809, now seen corresponding path program 1 times [2021-12-21 14:16:50,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:16:50,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507675631] [2021-12-21 14:16:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:16:50,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:16:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:16:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:16:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:16:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:16:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:16:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:16:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:16:50,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:16:50,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507675631] [2021-12-21 14:16:50,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507675631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:16:50,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:16:50,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:16:50,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262501835] [2021-12-21 14:16:50,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:16:50,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:16:50,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:16:50,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:16:50,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:16:50,426 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)