./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_label41+token_ring.06.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 b643fcd36e1cc4587225d57a08c62d9a71f0676d69600864fd61c6c0403013f3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:28:52,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:28:52,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:28:53,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:28:53,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:28:53,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:28:53,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:28:53,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:28:53,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:28:53,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:28:53,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:28:53,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:28:53,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:28:53,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:28:53,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:28:53,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:28:53,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:28:53,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:28:53,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:28:53,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:28:53,058 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:28:53,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:28:53,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:28:53,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:28:53,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:28:53,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:28:53,066 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:28:53,066 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:28:53,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:28:53,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:28:53,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:28:53,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:28:53,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:28:53,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:28:53,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:28:53,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:28:53,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:28:53,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:28:53,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:28:53,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:28:53,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:28:53,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:28:53,078 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:28:53,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:28:53,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:28:53,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:28:53,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:28:53,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:28:53,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:28:53,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:28:53,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:28:53,112 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:28:53,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:28:53,113 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:28:53,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:28:53,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:28:53,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:28:53,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:28:53,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:28:53,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:28:53,114 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:28:53,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:28:53,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:28:53,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:28:53,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:28:53,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:28:53,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:28:53,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:28:53,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:28:53,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:28:53,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:28:53,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:28:53,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:28:53,117 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:28:53,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:28:53,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:28:53,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b643fcd36e1cc4587225d57a08c62d9a71f0676d69600864fd61c6c0403013f3 [2022-07-22 19:28:53,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:28:53,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:28:53,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:28:53,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:28:53,347 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:28:53,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c [2022-07-22 19:28:53,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/668f9eb21/f031e3cd65b7467fb59bb8f92f658e8a/FLAG592f41d12 [2022-07-22 19:28:54,145 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:28:54,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.06.cil-2.c [2022-07-22 19:28:54,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/668f9eb21/f031e3cd65b7467fb59bb8f92f658e8a/FLAG592f41d12 [2022-07-22 19:28:54,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/668f9eb21/f031e3cd65b7467fb59bb8f92f658e8a [2022-07-22 19:28:54,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:28:54,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:28:54,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:28:54,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:28:54,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:28:54,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:28:54" (1/1) ... [2022-07-22 19:28:54,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b036428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:54, skipping insertion in model container [2022-07-22 19:28:54,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:28:54" (1/1) ... [2022-07-22 19:28:54,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:28:54,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:28:56,220 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_label41+token_ring.06.cil-2.c[376251,376264] [2022-07-22 19:28:56,256 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_label41+token_ring.06.cil-2.c[383339,383352] [2022-07-22 19:28:56,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:28:56,468 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:28:57,199 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_label41+token_ring.06.cil-2.c[376251,376264] [2022-07-22 19:28:57,216 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_label41+token_ring.06.cil-2.c[383339,383352] [2022-07-22 19:28:57,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:28:57,287 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:28:57,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57 WrapperNode [2022-07-22 19:28:57,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:28:57,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:28:57,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:28:57,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:28:57,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:57,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:57,714 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2022-07-22 19:28:57,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:28:57,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:28:57,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:28:57,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:28:57,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:57,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:57,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:57,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:58,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:58,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:58,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:58,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:28:58,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:28:58,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:28:58,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:28:58,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (1/1) ... [2022-07-22 19:28:58,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:28:58,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:28:58,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 19:28:58,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 19:28:58,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:28:58,432 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:28:58,433 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:28:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:28:58,433 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:28:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:28:58,433 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:28:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:28:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:28:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:28:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:28:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:28:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:28:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:28:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:28:58,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:28:58,663 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:28:58,664 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:29:04,473 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:29:04,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:29:04,503 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-22 19:29:04,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:29:04 BoogieIcfgContainer [2022-07-22 19:29:04,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:29:04,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:29:04,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:29:04,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:29:04,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:28:54" (1/3) ... [2022-07-22 19:29:04,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f5c6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:29:04, skipping insertion in model container [2022-07-22 19:29:04,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:28:57" (2/3) ... [2022-07-22 19:29:04,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f5c6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:29:04, skipping insertion in model container [2022-07-22 19:29:04,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:29:04" (3/3) ... [2022-07-22 19:29:04,516 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.06.cil-2.c [2022-07-22 19:29:04,529 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:29:04,530 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:29:04,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:29:04,623 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4297b36a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fbb396 [2022-07-22 19:29:04,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:29:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-22 19:29:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:04,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:04,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:04,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2022-07-22 19:29:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:04,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181635051] [2022-07-22 19:29:04,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:04,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:04,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:04,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:05,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:05,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181635051] [2022-07-22 19:29:05,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181635051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:05,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:05,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:29:05,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27550536] [2022-07-22 19:29:05,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:05,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:29:05,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:05,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:29:05,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:29:05,067 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:06,052 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2022-07-22 19:29:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:29:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:06,075 INFO L225 Difference]: With dead ends: 4896 [2022-07-22 19:29:06,075 INFO L226 Difference]: Without dead ends: 2424 [2022-07-22 19:29:06,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:29:06,086 INFO L413 NwaCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16714 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:06,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 16714 Invalid, 454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:29:06,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2022-07-22 19:29:06,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2022-07-22 19:29:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-22 19:29:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2022-07-22 19:29:06,195 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2022-07-22 19:29:06,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:06,196 INFO L495 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2022-07-22 19:29:06,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:06,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2022-07-22 19:29:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:06,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:06,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:06,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:29:06,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:06,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2022-07-22 19:29:06,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:06,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80224667] [2022-07-22 19:29:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:06,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:06,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:06,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:06,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80224667] [2022-07-22 19:29:06,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80224667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:06,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:06,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523032373] [2022-07-22 19:29:06,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:06,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:06,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:06,451 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:08,385 INFO L93 Difference]: Finished difference Result 2945 states and 5262 transitions. [2022-07-22 19:29:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:08,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:08,399 INFO L225 Difference]: With dead ends: 2945 [2022-07-22 19:29:08,400 INFO L226 Difference]: Without dead ends: 2732 [2022-07-22 19:29:08,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:08,404 INFO L413 NwaCegarLoop]: 4540 mSDtfsCounter, 4776 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 21478 SdHoareTripleChecker+Invalid, 1933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:08,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4789 Valid, 21478 Invalid, 1933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 19:29:08,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-07-22 19:29:08,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2571. [2022-07-22 19:29:08,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8177124702144558) internal successors, (4577), 2522 states have internal predecessors, (4577), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-07-22 19:29:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4658 transitions. [2022-07-22 19:29:08,552 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4658 transitions. Word has length 112 [2022-07-22 19:29:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:08,553 INFO L495 AbstractCegarLoop]: Abstraction has 2571 states and 4658 transitions. [2022-07-22 19:29:08,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4658 transitions. [2022-07-22 19:29:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:08,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:08,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:08,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:29:08,557 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:08,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:08,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2022-07-22 19:29:08,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:08,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95181138] [2022-07-22 19:29:08,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:08,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:08,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:08,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:08,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95181138] [2022-07-22 19:29:08,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95181138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:08,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:08,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:08,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255538501] [2022-07-22 19:29:08,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:08,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:08,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:08,675 INFO L87 Difference]: Start difference. First operand 2571 states and 4658 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:10,535 INFO L93 Difference]: Finished difference Result 3704 states and 6454 transitions. [2022-07-22 19:29:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:10,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:10,554 INFO L225 Difference]: With dead ends: 3704 [2022-07-22 19:29:10,554 INFO L226 Difference]: Without dead ends: 3270 [2022-07-22 19:29:10,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:10,566 INFO L413 NwaCegarLoop]: 4487 mSDtfsCounter, 4800 mSDsluCounter, 16875 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 21362 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:10,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4813 Valid, 21362 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:29:10,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-07-22 19:29:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2981. [2022-07-22 19:29:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2884 states have (on average 1.782246879334258) internal successors, (5140), 2890 states have internal predecessors, (5140), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2022-07-22 19:29:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 5291 transitions. [2022-07-22 19:29:10,694 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 5291 transitions. Word has length 112 [2022-07-22 19:29:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:10,695 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 5291 transitions. [2022-07-22 19:29:10,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 5291 transitions. [2022-07-22 19:29:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:10,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:10,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:10,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:29:10,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:10,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:10,701 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2022-07-22 19:29:10,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:10,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110456568] [2022-07-22 19:29:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:10,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:10,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:10,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:10,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110456568] [2022-07-22 19:29:10,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110456568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:10,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:10,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918086111] [2022-07-22 19:29:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:10,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:10,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:10,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:10,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:10,840 INFO L87 Difference]: Start difference. First operand 2981 states and 5291 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:12,732 INFO L93 Difference]: Finished difference Result 5188 states and 8779 transitions. [2022-07-22 19:29:12,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:12,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:12,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:12,756 INFO L225 Difference]: With dead ends: 5188 [2022-07-22 19:29:12,757 INFO L226 Difference]: Without dead ends: 4344 [2022-07-22 19:29:12,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:12,763 INFO L413 NwaCegarLoop]: 4531 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 1932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:12,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 21469 Invalid, 1932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:29:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2022-07-22 19:29:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3803. [2022-07-22 19:29:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3618 states have (on average 1.732448866777225) internal successors, (6268), 3628 states have internal predecessors, (6268), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2022-07-22 19:29:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6565 transitions. [2022-07-22 19:29:12,905 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6565 transitions. Word has length 112 [2022-07-22 19:29:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:12,906 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 6565 transitions. [2022-07-22 19:29:12,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:12,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6565 transitions. [2022-07-22 19:29:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:12,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:12,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:12,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:29:12,910 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2022-07-22 19:29:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:12,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91000249] [2022-07-22 19:29:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:12,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:12,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:13,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:13,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91000249] [2022-07-22 19:29:13,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91000249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:13,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:13,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:13,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029283764] [2022-07-22 19:29:13,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:13,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:13,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:13,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:13,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:13,008 INFO L87 Difference]: Start difference. First operand 3803 states and 6565 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:14,734 INFO L93 Difference]: Finished difference Result 8154 states and 13443 transitions. [2022-07-22 19:29:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:14,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:14,767 INFO L225 Difference]: With dead ends: 8154 [2022-07-22 19:29:14,767 INFO L226 Difference]: Without dead ends: 6488 [2022-07-22 19:29:14,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:14,779 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1854 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21466 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:14,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 21466 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1854 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:29:14,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2022-07-22 19:29:15,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5453. [2022-07-22 19:29:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5092 states have (on average 1.6755695208169679) internal successors, (8532), 5110 states have internal predecessors, (8532), 247 states have call successors, (247), 96 states have call predecessors, (247), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2022-07-22 19:29:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 9139 transitions. [2022-07-22 19:29:15,053 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 9139 transitions. Word has length 112 [2022-07-22 19:29:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:15,053 INFO L495 AbstractCegarLoop]: Abstraction has 5453 states and 9139 transitions. [2022-07-22 19:29:15,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:15,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 9139 transitions. [2022-07-22 19:29:15,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:15,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:15,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:15,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:29:15,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:15,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2022-07-22 19:29:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:15,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659085815] [2022-07-22 19:29:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:15,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:15,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:15,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:15,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:15,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659085815] [2022-07-22 19:29:15,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659085815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:15,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:15,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:15,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440588915] [2022-07-22 19:29:15,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:15,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:15,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:15,179 INFO L87 Difference]: Start difference. First operand 5453 states and 9139 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:17,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:17,093 INFO L93 Difference]: Finished difference Result 14084 states and 22827 transitions. [2022-07-22 19:29:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:17,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:17,142 INFO L225 Difference]: With dead ends: 14084 [2022-07-22 19:29:17,142 INFO L226 Difference]: Without dead ends: 10768 [2022-07-22 19:29:17,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:17,159 INFO L413 NwaCegarLoop]: 4525 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21463 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:17,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 21463 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:29:17,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10768 states. [2022-07-22 19:29:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10768 to 8767. [2022-07-22 19:29:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 8054 states have (on average 1.6240377452197665) internal successors, (13080), 8088 states have internal predecessors, (13080), 487 states have call successors, (487), 192 states have call predecessors, (487), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2022-07-22 19:29:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 14361 transitions. [2022-07-22 19:29:17,553 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 14361 transitions. Word has length 112 [2022-07-22 19:29:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:17,553 INFO L495 AbstractCegarLoop]: Abstraction has 8767 states and 14361 transitions. [2022-07-22 19:29:17,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 14361 transitions. [2022-07-22 19:29:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:17,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:17,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:17,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:29:17,561 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2022-07-22 19:29:17,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:17,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019478904] [2022-07-22 19:29:17,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:17,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:17,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:17,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019478904] [2022-07-22 19:29:17,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019478904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:17,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:17,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304749838] [2022-07-22 19:29:17,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:17,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:17,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:17,666 INFO L87 Difference]: Start difference. First operand 8767 states and 14361 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:19,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:19,723 INFO L93 Difference]: Finished difference Result 25942 states and 41783 transitions. [2022-07-22 19:29:19,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:19,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:19,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:19,804 INFO L225 Difference]: With dead ends: 25942 [2022-07-22 19:29:19,805 INFO L226 Difference]: Without dead ends: 19312 [2022-07-22 19:29:19,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:19,840 INFO L413 NwaCegarLoop]: 4522 mSDtfsCounter, 4775 mSDsluCounter, 16938 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21460 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:19,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 21460 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1842 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 19:29:19,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2022-07-22 19:29:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 15425. [2022-07-22 19:29:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15425 states, 14008 states have (on average 1.5862364363221018) internal successors, (22220), 14074 states have internal predecessors, (22220), 967 states have call successors, (967), 384 states have call predecessors, (967), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2022-07-22 19:29:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15425 states to 15425 states and 25011 transitions. [2022-07-22 19:29:20,685 INFO L78 Accepts]: Start accepts. Automaton has 15425 states and 25011 transitions. Word has length 112 [2022-07-22 19:29:20,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:20,686 INFO L495 AbstractCegarLoop]: Abstraction has 15425 states and 25011 transitions. [2022-07-22 19:29:20,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 15425 states and 25011 transitions. [2022-07-22 19:29:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:20,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:20,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:20,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:29:20,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:20,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2022-07-22 19:29:20,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:20,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613792141] [2022-07-22 19:29:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:20,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:20,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:20,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:20,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613792141] [2022-07-22 19:29:20,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613792141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:20,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:20,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:20,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203833231] [2022-07-22 19:29:20,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:20,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:20,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:20,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:20,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:20,825 INFO L87 Difference]: Start difference. First operand 15425 states and 25011 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:24,531 INFO L93 Difference]: Finished difference Result 55608 states and 89253 transitions. [2022-07-22 19:29:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:24,727 INFO L225 Difference]: With dead ends: 55608 [2022-07-22 19:29:24,727 INFO L226 Difference]: Without dead ends: 42320 [2022-07-22 19:29:24,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:24,795 INFO L413 NwaCegarLoop]: 4515 mSDtfsCounter, 5030 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5050 SdHoareTripleChecker+Valid, 21445 SdHoareTripleChecker+Invalid, 1906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:24,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5050 Valid, 21445 Invalid, 1906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:29:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42320 states. [2022-07-22 19:29:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42320 to 28611. [2022-07-22 19:29:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28611 states, 25850 states have (on average 1.565338491295938) internal successors, (40464), 25980 states have internal predecessors, (40464), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2022-07-22 19:29:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28611 states to 28611 states and 46633 transitions. [2022-07-22 19:29:26,624 INFO L78 Accepts]: Start accepts. Automaton has 28611 states and 46633 transitions. Word has length 112 [2022-07-22 19:29:26,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:26,624 INFO L495 AbstractCegarLoop]: Abstraction has 28611 states and 46633 transitions. [2022-07-22 19:29:26,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 28611 states and 46633 transitions. [2022-07-22 19:29:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:26,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:26,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:26,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:29:26,651 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:26,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:26,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2022-07-22 19:29:26,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:26,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877791448] [2022-07-22 19:29:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:26,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:26,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:26,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:26,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877791448] [2022-07-22 19:29:26,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877791448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:26,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:26,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104527097] [2022-07-22 19:29:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:26,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:26,764 INFO L87 Difference]: Start difference. First operand 28611 states and 46633 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:32,301 INFO L93 Difference]: Finished difference Result 105085 states and 171193 transitions. [2022-07-22 19:29:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:32,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:32,646 INFO L225 Difference]: With dead ends: 105085 [2022-07-22 19:29:32,646 INFO L226 Difference]: Without dead ends: 78611 [2022-07-22 19:29:32,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:32,735 INFO L413 NwaCegarLoop]: 4507 mSDtfsCounter, 4964 mSDsluCounter, 16930 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 21437 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:32,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4984 Valid, 21437 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:29:32,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78611 states. [2022-07-22 19:29:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78611 to 55045. [2022-07-22 19:29:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55045 states, 49660 states have (on average 1.5559403946838501) internal successors, (77268), 49918 states have internal predecessors, (77268), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2022-07-22 19:29:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55045 states to 55045 states and 91523 transitions. [2022-07-22 19:29:36,103 INFO L78 Accepts]: Start accepts. Automaton has 55045 states and 91523 transitions. Word has length 112 [2022-07-22 19:29:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:36,104 INFO L495 AbstractCegarLoop]: Abstraction has 55045 states and 91523 transitions. [2022-07-22 19:29:36,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:36,104 INFO L276 IsEmpty]: Start isEmpty. Operand 55045 states and 91523 transitions. [2022-07-22 19:29:36,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:36,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:36,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:36,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:29:36,146 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2022-07-22 19:29:36,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:36,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428061370] [2022-07-22 19:29:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:36,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:36,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:36,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:36,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428061370] [2022-07-22 19:29:36,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428061370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:36,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:36,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:36,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603854305] [2022-07-22 19:29:36,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:36,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:36,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:36,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:36,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:36,256 INFO L87 Difference]: Start difference. First operand 55045 states and 91523 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:45,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:45,672 INFO L93 Difference]: Finished difference Result 203331 states and 339677 transitions. [2022-07-22 19:29:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:45,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-22 19:29:45,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:46,543 INFO L225 Difference]: With dead ends: 203331 [2022-07-22 19:29:46,543 INFO L226 Difference]: Without dead ends: 150423 [2022-07-22 19:29:46,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:46,889 INFO L413 NwaCegarLoop]: 4472 mSDtfsCounter, 4937 mSDsluCounter, 16870 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 21342 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:46,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4957 Valid, 21342 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 19:29:46,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150423 states. [2022-07-22 19:29:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150423 to 107785. [2022-07-22 19:29:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107785 states, 97280 states have (on average 1.5522615131578947) internal successors, (151004), 97794 states have internal predecessors, (151004), 6919 states have call successors, (6919), 3072 states have call predecessors, (6919), 3584 states have return successors, (27626), 7430 states have call predecessors, (27626), 6919 states have call successors, (27626) [2022-07-22 19:29:53,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107785 states to 107785 states and 185549 transitions. [2022-07-22 19:29:53,767 INFO L78 Accepts]: Start accepts. Automaton has 107785 states and 185549 transitions. Word has length 112 [2022-07-22 19:29:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:53,767 INFO L495 AbstractCegarLoop]: Abstraction has 107785 states and 185549 transitions. [2022-07-22 19:29:53,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:29:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 107785 states and 185549 transitions. [2022-07-22 19:29:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 19:29:53,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:53,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:29:53,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:29:53,847 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:53,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:53,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2022-07-22 19:29:53,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:53,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375246184] [2022-07-22 19:29:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:53,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:29:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:29:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:29:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:29:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:53,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:53,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375246184] [2022-07-22 19:29:53,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375246184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:53,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:53,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:53,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512598623] [2022-07-22 19:29:53,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:53,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:53,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:53,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:53,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:53,943 INFO L87 Difference]: Start difference. First operand 107785 states and 185549 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)