./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_label43+token_ring.09.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 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:55:48,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:55:48,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:55:48,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:55:48,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:55:48,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:55:48,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:55:48,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:55:48,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:55:48,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:55:48,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:55:48,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:55:48,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:55:48,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:55:48,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:55:48,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:55:48,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:55:48,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:55:48,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:55:48,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:55:48,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:55:48,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:55:48,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:55:48,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:55:48,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:55:48,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:55:48,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:55:48,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:55:48,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:55:48,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:55:48,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:55:48,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:55:48,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:55:48,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:55:48,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:55:48,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:55:48,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:55:48,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:55:48,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:55:48,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:55:48,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:55:48,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:55:48,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:55:48,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:55:48,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:55:48,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:55:48,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:55:48,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:55:48,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:55:48,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:55:48,461 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:55:48,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:55:48,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:55:48,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:55:48,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:55:48,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:55:48,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:55:48,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:55:48,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:55:48,463 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:55:48,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:55:48,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:55:48,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:55:48,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:55:48,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:55:48,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:55:48,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:55:48,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:55:48,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:55:48,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:55:48,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:55:48,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:55:48,466 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:55:48,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:55:48,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:55:48,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:55:48,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 [2021-12-16 01:55:48,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:55:48,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:55:48,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:55:48,680 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:55:48,681 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:55:48,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2021-12-16 01:55:48,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeee644f2/b7a9020b8d0a411bbaea39958228a292/FLAG4aae3e5a5 [2021-12-16 01:55:49,434 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:55:49,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2021-12-16 01:55:49,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeee644f2/b7a9020b8d0a411bbaea39958228a292/FLAG4aae3e5a5 [2021-12-16 01:55:49,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeee644f2/b7a9020b8d0a411bbaea39958228a292 [2021-12-16 01:55:49,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:55:49,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:55:49,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:55:49,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:55:49,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:55:49,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:55:49" (1/1) ... [2021-12-16 01:55:49,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6bca42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:49, skipping insertion in model container [2021-12-16 01:55:49,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:55:49" (1/1) ... [2021-12-16 01:55:49,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:55:49,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:55:51,465 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_label43+token_ring.09.cil-2.c[381679,381692] [2021-12-16 01:55:51,489 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_label43+token_ring.09.cil-2.c[383339,383352] [2021-12-16 01:55:51,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:55:51,749 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:55:52,404 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_label43+token_ring.09.cil-2.c[381679,381692] [2021-12-16 01:55:52,408 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_label43+token_ring.09.cil-2.c[383339,383352] [2021-12-16 01:55:52,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:55:52,507 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:55:52,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52 WrapperNode [2021-12-16 01:55:52,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:55:52,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:55:52,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:55:52,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:55:52,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:52,615 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:53,024 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2021-12-16 01:55:53,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:55:53,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:55:53,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:55:53,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:55:53,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:53,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:53,171 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:53,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:53,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:53,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:53,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:53,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:55:53,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:55:53,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:55:53,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:55:53,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (1/1) ... [2021-12-16 01:55:53,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:55:53,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:55:53,786 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) [2021-12-16 01:55:53,835 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 [2021-12-16 01:55:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:55:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 01:55:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 01:55:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 01:55:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 01:55:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 01:55:53,871 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 01:55:53,871 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-16 01:55:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-16 01:55:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 01:55:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 01:55:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 01:55:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 01:55:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 01:55:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 01:55:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:55:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:55:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:55:54,117 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:55:54,128 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:56:00,074 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:56:00,092 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:56:00,092 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-16 01:56:00,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:56:00 BoogieIcfgContainer [2021-12-16 01:56:00,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:56:00,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:56:00,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:56:00,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:56:00,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:55:49" (1/3) ... [2021-12-16 01:56:00,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411b50ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:56:00, skipping insertion in model container [2021-12-16 01:56:00,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:55:52" (2/3) ... [2021-12-16 01:56:00,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411b50ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:56:00, skipping insertion in model container [2021-12-16 01:56:00,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:56:00" (3/3) ... [2021-12-16 01:56:00,101 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-2.c [2021-12-16 01:56:00,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:56:00,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 01:56:00,146 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:56:00,151 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 [2021-12-16 01:56:00,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 01:56:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-16 01:56:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:00,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:00,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:00,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2021-12-16 01:56:00,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:00,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740738676] [2021-12-16 01:56:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:00,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:00,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:00,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:00,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:00,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740738676] [2021-12-16 01:56:00,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740738676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:00,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:00,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:56:00,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486322906] [2021-12-16 01:56:00,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:00,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:56:00,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:00,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:56:00,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:56:00,541 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-12-16 01:56:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:01,663 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2021-12-16 01:56:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:56:01,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:01,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:01,691 INFO L225 Difference]: With dead ends: 5096 [2021-12-16 01:56:01,691 INFO L226 Difference]: Without dead ends: 2539 [2021-12-16 01:56:01,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:56:01,705 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12422 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16979 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:01,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 16979 Invalid, 605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:56:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-12-16 01:56:01,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2021-12-16 01:56:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-16 01:56:01,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2021-12-16 01:56:01,952 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2021-12-16 01:56:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:01,952 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2021-12-16 01:56:01,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-12-16 01:56:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2021-12-16 01:56:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:01,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:01,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:01,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:56:01,958 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:01,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2021-12-16 01:56:01,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:01,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391287337] [2021-12-16 01:56:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:01,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:02,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:02,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391287337] [2021-12-16 01:56:02,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391287337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:02,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:02,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:56:02,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035274091] [2021-12-16 01:56:02,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:02,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:56:02,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:56:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:56:02,309 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-12-16 01:56:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:04,783 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2021-12-16 01:56:04,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:56:04,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:04,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:04,817 INFO L225 Difference]: With dead ends: 3244 [2021-12-16 01:56:04,818 INFO L226 Difference]: Without dead ends: 2952 [2021-12-16 01:56:04,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:56:04,836 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12720 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17248 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:04,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 17248 Invalid, 1640 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 01:56:04,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2021-12-16 01:56:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2021-12-16 01:56:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-16 01:56:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2021-12-16 01:56:04,980 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2021-12-16 01:56:04,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:04,982 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2021-12-16 01:56:04,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-12-16 01:56:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2021-12-16 01:56:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:04,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:04,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:04,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:56:04,989 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:04,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2021-12-16 01:56:04,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:04,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144506531] [2021-12-16 01:56:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:04,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:05,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:05,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:05,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:05,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144506531] [2021-12-16 01:56:05,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144506531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:05,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:05,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:05,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412834117] [2021-12-16 01:56:05,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:05,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:05,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:05,226 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:07,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:07,679 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2021-12-16 01:56:07,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:07,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:07,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:07,695 INFO L225 Difference]: With dead ends: 3972 [2021-12-16 01:56:07,696 INFO L226 Difference]: Without dead ends: 3377 [2021-12-16 01:56:07,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:07,699 INFO L933 BasicCegarLoop]: 4773 mSDtfsCounter, 5201 mSDsluCounter, 17461 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 22234 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:07,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5217 Valid, 22234 Invalid, 2479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-16 01:56:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2021-12-16 01:56:07,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2021-12-16 01:56:07,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-16 01:56:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2021-12-16 01:56:07,798 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2021-12-16 01:56:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:07,799 INFO L470 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2021-12-16 01:56:07,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2021-12-16 01:56:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:07,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:07,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:07,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:56:07,802 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2021-12-16 01:56:07,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:07,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230866718] [2021-12-16 01:56:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:07,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:07,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:07,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230866718] [2021-12-16 01:56:07,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230866718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:07,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:07,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:07,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779007352] [2021-12-16 01:56:07,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:07,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:07,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:07,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:07,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:07,915 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:10,304 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2021-12-16 01:56:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:10,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:10,318 INFO L225 Difference]: With dead ends: 5044 [2021-12-16 01:56:10,318 INFO L226 Difference]: Without dead ends: 4167 [2021-12-16 01:56:10,320 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 [2021-12-16 01:56:10,321 INFO L933 BasicCegarLoop]: 4761 mSDtfsCounter, 5195 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 22218 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:10,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5211 Valid, 22218 Invalid, 2474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 01:56:10,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2021-12-16 01:56:10,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2021-12-16 01:56:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-16 01:56:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2021-12-16 01:56:10,406 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2021-12-16 01:56:10,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:10,407 INFO L470 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2021-12-16 01:56:10,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:10,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2021-12-16 01:56:10,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:10,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:10,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:10,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:56:10,410 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2021-12-16 01:56:10,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:10,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324545062] [2021-12-16 01:56:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:10,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:10,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:10,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324545062] [2021-12-16 01:56:10,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324545062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:10,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:10,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:10,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968352824] [2021-12-16 01:56:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:10,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:10,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:10,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:10,505 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:13,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:13,063 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2021-12-16 01:56:13,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:13,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:13,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:13,088 INFO L225 Difference]: With dead ends: 7114 [2021-12-16 01:56:13,088 INFO L226 Difference]: Without dead ends: 5669 [2021-12-16 01:56:13,094 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 [2021-12-16 01:56:13,096 INFO L933 BasicCegarLoop]: 4756 mSDtfsCounter, 5194 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22213 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:13,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5210 Valid, 22213 Invalid, 2466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-16 01:56:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-12-16 01:56:13,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2021-12-16 01:56:13,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-16 01:56:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2021-12-16 01:56:13,276 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2021-12-16 01:56:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:13,276 INFO L470 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2021-12-16 01:56:13,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2021-12-16 01:56:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:13,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:13,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:13,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:56:13,281 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:13,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2021-12-16 01:56:13,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:13,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240916450] [2021-12-16 01:56:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:13,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:13,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:13,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240916450] [2021-12-16 01:56:13,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240916450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:13,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:13,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:13,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828303086] [2021-12-16 01:56:13,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:13,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:13,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:13,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:13,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:13,406 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:15,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:15,866 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2021-12-16 01:56:15,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:15,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:15,950 INFO L225 Difference]: With dead ends: 11253 [2021-12-16 01:56:15,950 INFO L226 Difference]: Without dead ends: 8671 [2021-12-16 01:56:15,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:15,965 INFO L933 BasicCegarLoop]: 4751 mSDtfsCounter, 5193 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 22208 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:15,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5209 Valid, 22208 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-16 01:56:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2021-12-16 01:56:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2021-12-16 01:56:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-16 01:56:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2021-12-16 01:56:16,198 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2021-12-16 01:56:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:16,199 INFO L470 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2021-12-16 01:56:16,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:16,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2021-12-16 01:56:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:16,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:16,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:16,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:56:16,203 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2021-12-16 01:56:16,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:16,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768672794] [2021-12-16 01:56:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:16,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:16,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:16,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:16,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768672794] [2021-12-16 01:56:16,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768672794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:16,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:16,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:16,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967148051] [2021-12-16 01:56:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:16,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:16,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:16,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:16,314 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:18,993 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2021-12-16 01:56:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:18,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:19,069 INFO L225 Difference]: With dead ends: 19532 [2021-12-16 01:56:19,071 INFO L226 Difference]: Without dead ends: 14669 [2021-12-16 01:56:19,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:56:19,097 INFO L933 BasicCegarLoop]: 4547 mSDtfsCounter, 5272 mSDsluCounter, 16918 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 21465 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:19,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5288 Valid, 21465 Invalid, 2224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [114 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-16 01:56:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2021-12-16 01:56:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2021-12-16 01:56:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-16 01:56:19,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2021-12-16 01:56:19,629 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2021-12-16 01:56:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:19,629 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2021-12-16 01:56:19,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2021-12-16 01:56:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:19,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:19,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:19,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:56:19,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:19,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:19,642 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2021-12-16 01:56:19,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:19,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210791493] [2021-12-16 01:56:19,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:19,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:19,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:19,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:19,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:19,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210791493] [2021-12-16 01:56:19,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210791493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:19,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:19,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:19,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983482157] [2021-12-16 01:56:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:19,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:19,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:19,792 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:21,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:21,167 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2021-12-16 01:56:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:56:21,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:21,219 INFO L225 Difference]: With dead ends: 24276 [2021-12-16 01:56:21,219 INFO L226 Difference]: Without dead ends: 14836 [2021-12-16 01:56:21,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:56:21,253 INFO L933 BasicCegarLoop]: 4458 mSDtfsCounter, 4979 mSDsluCounter, 12486 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 16944 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:21,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4996 Valid, 16944 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:56:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2021-12-16 01:56:21,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2021-12-16 01:56:21,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-16 01:56:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2021-12-16 01:56:21,713 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2021-12-16 01:56:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:21,713 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2021-12-16 01:56:21,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2021-12-16 01:56:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:21,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:21,723 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:21,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:56:21,723 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:21,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:21,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2021-12-16 01:56:21,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:21,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718811982] [2021-12-16 01:56:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:21,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:21,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:21,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:21,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:21,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:21,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:21,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718811982] [2021-12-16 01:56:21,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718811982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:21,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:21,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:21,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655298906] [2021-12-16 01:56:21,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:21,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:21,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:21,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:21,839 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:23,193 INFO L93 Difference]: Finished difference Result 24242 states and 39315 transitions. [2021-12-16 01:56:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:56:23,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:23,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:23,239 INFO L225 Difference]: With dead ends: 24242 [2021-12-16 01:56:23,239 INFO L226 Difference]: Without dead ends: 14802 [2021-12-16 01:56:23,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:56:23,262 INFO L933 BasicCegarLoop]: 4454 mSDtfsCounter, 4977 mSDsluCounter, 12486 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 16940 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:23,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 16940 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:56:23,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14802 states. [2021-12-16 01:56:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14802 to 11578. [2021-12-16 01:56:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6154490460679385) internal successors, (17358), 10780 states have internal predecessors, (17358), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-16 01:56:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18833 transitions. [2021-12-16 01:56:23,670 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18833 transitions. Word has length 146 [2021-12-16 01:56:23,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:23,671 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 18833 transitions. [2021-12-16 01:56:23,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18833 transitions. [2021-12-16 01:56:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:23,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:23,679 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:23,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:56:23,679 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:23,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:23,682 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2021-12-16 01:56:23,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:23,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919887262] [2021-12-16 01:56:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:23,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:23,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:23,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:23,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:23,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:23,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919887262] [2021-12-16 01:56:23,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919887262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:23,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:23,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:23,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360291603] [2021-12-16 01:56:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:23,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:23,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:23,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:23,788 INFO L87 Difference]: Start difference. First operand 11578 states and 18833 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:26,773 INFO L93 Difference]: Finished difference Result 36023 states and 57809 transitions. [2021-12-16 01:56:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:56:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:26,847 INFO L225 Difference]: With dead ends: 36023 [2021-12-16 01:56:26,847 INFO L226 Difference]: Without dead ends: 26583 [2021-12-16 01:56:26,873 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 [2021-12-16 01:56:26,874 INFO L933 BasicCegarLoop]: 4727 mSDtfsCounter, 5180 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22184 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:26,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 22184 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 01:56:26,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26583 states. [2021-12-16 01:56:27,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26583 to 20829. [2021-12-16 01:56:27,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20829 states, 19196 states have (on average 1.5855386538862264) internal successors, (30436), 19263 states have internal predecessors, (30436), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2021-12-16 01:56:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20829 states to 20829 states and 33581 transitions. [2021-12-16 01:56:27,847 INFO L78 Accepts]: Start accepts. Automaton has 20829 states and 33581 transitions. Word has length 146 [2021-12-16 01:56:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:27,847 INFO L470 AbstractCegarLoop]: Abstraction has 20829 states and 33581 transitions. [2021-12-16 01:56:27,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:27,848 INFO L276 IsEmpty]: Start isEmpty. Operand 20829 states and 33581 transitions. [2021-12-16 01:56:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:27,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:27,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:27,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:56:27,860 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:27,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:27,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2021-12-16 01:56:27,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:27,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391516531] [2021-12-16 01:56:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:27,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:27,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:27,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:27,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:27,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:27,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:27,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391516531] [2021-12-16 01:56:27,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391516531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:27,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:27,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:27,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047144702] [2021-12-16 01:56:27,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:27,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:27,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:27,987 INFO L87 Difference]: Start difference. First operand 20829 states and 33581 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:33,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:33,544 INFO L93 Difference]: Finished difference Result 76950 states and 123193 transitions. [2021-12-16 01:56:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:56:33,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:33,769 INFO L225 Difference]: With dead ends: 76950 [2021-12-16 01:56:33,770 INFO L226 Difference]: Without dead ends: 58259 [2021-12-16 01:56:33,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:56:33,836 INFO L933 BasicCegarLoop]: 4855 mSDtfsCounter, 5257 mSDsluCounter, 17446 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 22301 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:33,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5272 Valid, 22301 Invalid, 2794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-16 01:56:33,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58259 states. [2021-12-16 01:56:35,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58259 to 38623. [2021-12-16 01:56:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38623 states, 35454 states have (on average 1.566198454335195) internal successors, (55528), 35585 states have internal predecessors, (55528), 2265 states have call successors, (2265), 775 states have call predecessors, (2265), 902 states have return successors, (4578), 2390 states have call predecessors, (4578), 2263 states have call successors, (4578) [2021-12-16 01:56:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38623 states to 38623 states and 62371 transitions. [2021-12-16 01:56:36,029 INFO L78 Accepts]: Start accepts. Automaton has 38623 states and 62371 transitions. Word has length 146 [2021-12-16 01:56:36,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:36,029 INFO L470 AbstractCegarLoop]: Abstraction has 38623 states and 62371 transitions. [2021-12-16 01:56:36,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:36,030 INFO L276 IsEmpty]: Start isEmpty. Operand 38623 states and 62371 transitions. [2021-12-16 01:56:36,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:36,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:36,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:36,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:56:36,053 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:36,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:36,054 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2021-12-16 01:56:36,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:36,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88094114] [2021-12-16 01:56:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:36,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:36,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:36,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:36,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:36,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88094114] [2021-12-16 01:56:36,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88094114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:36,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:36,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:36,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471933100] [2021-12-16 01:56:36,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:36,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:36,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:36,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:36,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:36,179 INFO L87 Difference]: Start difference. First operand 38623 states and 62371 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:39,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:56:39,991 INFO L93 Difference]: Finished difference Result 86516 states and 141372 transitions. [2021-12-16 01:56:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:56:39,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2021-12-16 01:56:39,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:56:40,184 INFO L225 Difference]: With dead ends: 86516 [2021-12-16 01:56:40,184 INFO L226 Difference]: Without dead ends: 50031 [2021-12-16 01:56:40,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:56:40,256 INFO L933 BasicCegarLoop]: 4440 mSDtfsCounter, 4845 mSDsluCounter, 16606 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4862 SdHoareTripleChecker+Valid, 21046 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 01:56:40,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4862 Valid, 21046 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 01:56:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50031 states. [2021-12-16 01:56:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50031 to 38623. [2021-12-16 01:56:42,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38623 states, 35454 states have (on average 1.5625599368195409) internal successors, (55399), 35585 states have internal predecessors, (55399), 2265 states have call successors, (2265), 775 states have call predecessors, (2265), 902 states have return successors, (4578), 2390 states have call predecessors, (4578), 2263 states have call successors, (4578) [2021-12-16 01:56:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38623 states to 38623 states and 62242 transitions. [2021-12-16 01:56:42,469 INFO L78 Accepts]: Start accepts. Automaton has 38623 states and 62242 transitions. Word has length 146 [2021-12-16 01:56:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:56:42,469 INFO L470 AbstractCegarLoop]: Abstraction has 38623 states and 62242 transitions. [2021-12-16 01:56:42,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-16 01:56:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 38623 states and 62242 transitions. [2021-12-16 01:56:42,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 01:56:42,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:56:42,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:56:42,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:56:42,492 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:56:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:56:42,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1904447622, now seen corresponding path program 1 times [2021-12-16 01:56:42,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:56:42,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320984670] [2021-12-16 01:56:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:56:42,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:56:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:42,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:56:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:42,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 01:56:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 01:56:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-16 01:56:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 01:56:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:56:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:56:42,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:56:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320984670] [2021-12-16 01:56:42,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320984670] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:56:42,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:56:42,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:56:42,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267291476] [2021-12-16 01:56:42,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:56:42,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:56:42,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:56:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:56:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:56:42,623 INFO L87 Difference]: Start difference. First operand 38623 states and 62242 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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)