./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/pc_sfifo_2.cil-1+token_ring.14.cil.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 a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:35:13,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:35:13,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:35:13,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:35:13,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:35:13,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:35:13,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:35:13,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:35:13,658 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:35:13,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:35:13,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:35:13,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:35:13,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:35:13,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:35:13,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:35:13,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:35:13,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:35:13,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:35:13,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:35:13,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:35:13,681 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:35:13,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:35:13,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:35:13,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:35:13,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:35:13,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:35:13,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:35:13,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:35:13,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:35:13,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:35:13,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:35:13,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:35:13,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:35:13,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:35:13,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:35:13,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:35:13,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:35:13,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:35:13,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:35:13,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:35:13,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:35:13,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:35:13,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:35:13,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:35:13,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:35:13,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:35:13,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:35:13,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:35:13,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:35:13,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:35:13,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:35:13,736 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:35:13,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:35:13,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:35:13,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:35:13,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:35:13,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:35:13,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:35:13,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:35:13,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:35:13,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:35:13,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:35:13,739 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:35:13,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:35:13,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:35:13,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:35:13,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:35:13,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:35:13,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:35:13,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:35:13,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:35:13,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:35:13,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:35:13,742 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:35:13,742 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:35:13,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:35:13,743 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e [2022-07-19 20:35:13,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:35:13,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:35:13,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:35:13,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:35:13,992 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:35:13,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2022-07-19 20:35:14,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e04f573/9f909e6af57441f693b2cf5f120db125/FLAGc665561cb [2022-07-19 20:35:14,487 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:35:14,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2022-07-19 20:35:14,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e04f573/9f909e6af57441f693b2cf5f120db125/FLAGc665561cb [2022-07-19 20:35:14,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07e04f573/9f909e6af57441f693b2cf5f120db125 [2022-07-19 20:35:14,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:35:14,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:35:14,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:35:14,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:35:14,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:35:14,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:14,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38ad07a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14, skipping insertion in model container [2022-07-19 20:35:14,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:14,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:35:14,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:35:14,727 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/pc_sfifo_2.cil-1+token_ring.14.cil.c[914,927] [2022-07-19 20:35:14,767 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/pc_sfifo_2.cil-1+token_ring.14.cil.c[7115,7128] [2022-07-19 20:35:14,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:35:14,856 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:35:14,866 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/pc_sfifo_2.cil-1+token_ring.14.cil.c[914,927] [2022-07-19 20:35:14,879 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/pc_sfifo_2.cil-1+token_ring.14.cil.c[7115,7128] [2022-07-19 20:35:14,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:35:14,959 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:35:14,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14 WrapperNode [2022-07-19 20:35:14,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:35:14,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:35:14,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:35:14,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:35:14,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:14,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:15,037 INFO L137 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1043 [2022-07-19 20:35:15,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:35:15,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:35:15,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:35:15,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:35:15,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:15,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:15,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:15,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:15,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:15,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:15,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:15,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:35:15,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:35:15,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:35:15,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:35:15,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (1/1) ... [2022-07-19 20:35:15,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:35:15,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:35:15,176 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) [2022-07-19 20:35:15,178 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 [2022-07-19 20:35:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:35:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:35:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:35:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:35:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:35:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:35:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:35:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:35:15,206 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:35:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:35:15,206 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:35:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:35:15,206 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:35:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:35:15,206 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:35:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:35:15,207 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:35:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:35:15,207 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:35:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:35:15,207 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:35:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:35:15,208 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:35:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:35:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:35:15,208 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:35:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:35:15,208 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:35:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:35:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:35:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:35:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:35:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-19 20:35:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-19 20:35:15,318 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:35:15,320 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:35:16,104 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:35:16,119 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:35:16,120 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-19 20:35:16,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:35:16 BoogieIcfgContainer [2022-07-19 20:35:16,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:35:16,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:35:16,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:35:16,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:35:16,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:35:14" (1/3) ... [2022-07-19 20:35:16,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238fa50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:35:16, skipping insertion in model container [2022-07-19 20:35:16,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:35:14" (2/3) ... [2022-07-19 20:35:16,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238fa50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:35:16, skipping insertion in model container [2022-07-19 20:35:16,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:35:16" (3/3) ... [2022-07-19 20:35:16,132 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.14.cil.c [2022-07-19 20:35:16,145 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:35:16,145 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:35:16,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:35:16,205 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@2dd2937, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@267f4c8a [2022-07-19 20:35:16,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:35:16,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 489 states, 429 states have (on average 1.6433566433566433) internal successors, (705), 437 states have internal predecessors, (705), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-19 20:35:16,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:35:16,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:16,222 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] [2022-07-19 20:35:16,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash 956122995, now seen corresponding path program 1 times [2022-07-19 20:35:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:16,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015246851] [2022-07-19 20:35:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:16,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:16,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:16,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:16,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015246851] [2022-07-19 20:35:16,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015246851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:16,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:16,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:35:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671706556] [2022-07-19 20:35:16,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:16,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:35:16,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:16,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:35:16,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:35:16,665 INFO L87 Difference]: Start difference. First operand has 489 states, 429 states have (on average 1.6433566433566433) internal successors, (705), 437 states have internal predecessors, (705), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:35:17,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:17,835 INFO L93 Difference]: Finished difference Result 1084 states and 1736 transitions. [2022-07-19 20:35:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:35:17,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:35:17,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:17,865 INFO L225 Difference]: With dead ends: 1084 [2022-07-19 20:35:17,866 INFO L226 Difference]: Without dead ends: 613 [2022-07-19 20:35:17,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:35:17,878 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 1209 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:17,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 2488 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:35:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-19 20:35:17,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 574. [2022-07-19 20:35:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 497 states have (on average 1.529175050301811) internal successors, (760), 504 states have internal predecessors, (760), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-07-19 20:35:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 867 transitions. [2022-07-19 20:35:17,975 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 867 transitions. Word has length 65 [2022-07-19 20:35:17,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:17,976 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 867 transitions. [2022-07-19 20:35:17,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:35:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 867 transitions. [2022-07-19 20:35:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:35:17,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:17,980 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] [2022-07-19 20:35:17,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:35:17,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:17,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1359908946, now seen corresponding path program 1 times [2022-07-19 20:35:17,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:17,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30535561] [2022-07-19 20:35:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:17,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:18,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:18,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:18,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:18,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30535561] [2022-07-19 20:35:18,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30535561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:18,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:18,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:35:18,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25680768] [2022-07-19 20:35:18,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:18,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:35:18,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:35:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:35:18,092 INFO L87 Difference]: Start difference. First operand 574 states and 867 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:35:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:19,244 INFO L93 Difference]: Finished difference Result 921 states and 1344 transitions. [2022-07-19 20:35:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:35:19,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:35:19,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:19,257 INFO L225 Difference]: With dead ends: 921 [2022-07-19 20:35:19,258 INFO L226 Difference]: Without dead ends: 744 [2022-07-19 20:35:19,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:35:19,262 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1480 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:19,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 2717 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:35:19,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-19 20:35:19,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 670. [2022-07-19 20:35:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 573 states have (on average 1.5078534031413613) internal successors, (864), 582 states have internal predecessors, (864), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-19 20:35:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1001 transitions. [2022-07-19 20:35:19,304 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1001 transitions. Word has length 65 [2022-07-19 20:35:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:19,305 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1001 transitions. [2022-07-19 20:35:19,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:35:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1001 transitions. [2022-07-19 20:35:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:35:19,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:19,308 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] [2022-07-19 20:35:19,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:35:19,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:19,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:19,309 INFO L85 PathProgramCache]: Analyzing trace with hash -668677164, now seen corresponding path program 1 times [2022-07-19 20:35:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:19,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484584539] [2022-07-19 20:35:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:19,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:19,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:19,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:19,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484584539] [2022-07-19 20:35:19,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484584539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:19,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:19,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:35:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306942522] [2022-07-19 20:35:19,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:19,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:35:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:19,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:35:19,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:35:19,426 INFO L87 Difference]: Start difference. First operand 670 states and 1001 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:35:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:20,489 INFO L93 Difference]: Finished difference Result 971 states and 1415 transitions. [2022-07-19 20:35:20,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:35:20,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 20:35:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:20,494 INFO L225 Difference]: With dead ends: 971 [2022-07-19 20:35:20,494 INFO L226 Difference]: Without dead ends: 704 [2022-07-19 20:35:20,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:35:20,496 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 971 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:20,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2874 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:35:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-19 20:35:20,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 675. [2022-07-19 20:35:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 577 states have (on average 1.5008665511265165) internal successors, (866), 586 states have internal predecessors, (866), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2022-07-19 20:35:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1004 transitions. [2022-07-19 20:35:20,535 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1004 transitions. Word has length 65 [2022-07-19 20:35:20,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:20,535 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1004 transitions. [2022-07-19 20:35:20,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:35:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1004 transitions. [2022-07-19 20:35:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:35:20,538 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:20,538 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] [2022-07-19 20:35:20,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:35:20,539 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:20,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:20,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1698036462, now seen corresponding path program 1 times [2022-07-19 20:35:20,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:20,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582777658] [2022-07-19 20:35:20,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:20,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:20,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:20,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:20,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:20,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:20,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582777658] [2022-07-19 20:35:20,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582777658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:20,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:20,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:35:20,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605414554] [2022-07-19 20:35:20,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:20,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:35:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:35:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:35:20,667 INFO L87 Difference]: Start difference. First operand 675 states and 1004 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:35:22,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:22,427 INFO L93 Difference]: Finished difference Result 1997 states and 2800 transitions. [2022-07-19 20:35:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:35:22,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-19 20:35:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:22,437 INFO L225 Difference]: With dead ends: 1997 [2022-07-19 20:35:22,437 INFO L226 Difference]: Without dead ends: 1707 [2022-07-19 20:35:22,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:35:22,440 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 4059 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4073 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:22,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4073 Valid, 2605 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:35:22,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2022-07-19 20:35:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1576. [2022-07-19 20:35:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1292 states have (on average 1.3970588235294117) internal successors, (1805), 1316 states have internal predecessors, (1805), 152 states have call successors, (152), 112 states have call predecessors, (152), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2022-07-19 20:35:22,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2145 transitions. [2022-07-19 20:35:22,522 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2145 transitions. Word has length 65 [2022-07-19 20:35:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:22,524 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2145 transitions. [2022-07-19 20:35:22,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:35:22,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2145 transitions. [2022-07-19 20:35:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:35:22,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:22,525 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] [2022-07-19 20:35:22,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:35:22,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:22,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:22,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2104827032, now seen corresponding path program 1 times [2022-07-19 20:35:22,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:22,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213779865] [2022-07-19 20:35:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:22,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:22,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:22,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:22,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:22,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:22,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213779865] [2022-07-19 20:35:22,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213779865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:22,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:22,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:35:22,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987089543] [2022-07-19 20:35:22,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:22,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:35:22,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:22,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:35:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:35:22,673 INFO L87 Difference]: Start difference. First operand 1576 states and 2145 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:35:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:23,812 INFO L93 Difference]: Finished difference Result 2867 states and 3818 transitions. [2022-07-19 20:35:23,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:35:23,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 20:35:23,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:23,821 INFO L225 Difference]: With dead ends: 2867 [2022-07-19 20:35:23,821 INFO L226 Difference]: Without dead ends: 1682 [2022-07-19 20:35:23,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:35:23,827 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 652 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:23,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 3200 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:35:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-07-19 20:35:23,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1606. [2022-07-19 20:35:23,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1316 states have (on average 1.3837386018237081) internal successors, (1821), 1340 states have internal predecessors, (1821), 152 states have call successors, (152), 112 states have call predecessors, (152), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2022-07-19 20:35:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2167 transitions. [2022-07-19 20:35:23,902 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2167 transitions. Word has length 65 [2022-07-19 20:35:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:23,902 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2167 transitions. [2022-07-19 20:35:23,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:35:23,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2167 transitions. [2022-07-19 20:35:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:35:23,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:23,905 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] [2022-07-19 20:35:23,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:35:23,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:23,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:23,907 INFO L85 PathProgramCache]: Analyzing trace with hash -718623638, now seen corresponding path program 1 times [2022-07-19 20:35:23,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:23,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065550193] [2022-07-19 20:35:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:23,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:23,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:23,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:24,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:24,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:24,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065550193] [2022-07-19 20:35:24,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065550193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:24,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:24,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:35:24,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226850292] [2022-07-19 20:35:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:24,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:35:24,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:24,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:35:24,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:35:24,008 INFO L87 Difference]: Start difference. First operand 1606 states and 2167 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:35:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:25,096 INFO L93 Difference]: Finished difference Result 2861 states and 3714 transitions. [2022-07-19 20:35:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:35:25,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:35:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:25,105 INFO L225 Difference]: With dead ends: 2861 [2022-07-19 20:35:25,105 INFO L226 Difference]: Without dead ends: 1869 [2022-07-19 20:35:25,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:35:25,112 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1439 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:25,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2466 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:35:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-07-19 20:35:25,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1548. [2022-07-19 20:35:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1274 states have (on average 1.3814756671899528) internal successors, (1760), 1293 states have internal predecessors, (1760), 146 states have call successors, (146), 107 states have call predecessors, (146), 126 states have return successors, (179), 149 states have call predecessors, (179), 142 states have call successors, (179) [2022-07-19 20:35:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2085 transitions. [2022-07-19 20:35:25,192 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2085 transitions. Word has length 65 [2022-07-19 20:35:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:25,192 INFO L495 AbstractCegarLoop]: Abstraction has 1548 states and 2085 transitions. [2022-07-19 20:35:25,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:35:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2085 transitions. [2022-07-19 20:35:25,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:35:25,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:25,194 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] [2022-07-19 20:35:25,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:35:25,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:25,195 INFO L85 PathProgramCache]: Analyzing trace with hash -852637144, now seen corresponding path program 1 times [2022-07-19 20:35:25,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:25,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046505557] [2022-07-19 20:35:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:25,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:25,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:25,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046505557] [2022-07-19 20:35:25,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046505557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:25,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:25,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:25,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231766967] [2022-07-19 20:35:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:25,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:25,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:25,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:25,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:25,263 INFO L87 Difference]: Start difference. First operand 1548 states and 2085 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:35:25,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:25,828 INFO L93 Difference]: Finished difference Result 3887 states and 5046 transitions. [2022-07-19 20:35:25,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:35:25,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:35:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:25,839 INFO L225 Difference]: With dead ends: 3887 [2022-07-19 20:35:25,839 INFO L226 Difference]: Without dead ends: 2731 [2022-07-19 20:35:25,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:35:25,842 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1410 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:25,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 2079 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:35:25,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2022-07-19 20:35:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2611. [2022-07-19 20:35:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2094 states have (on average 1.3142311365807067) internal successors, (2752), 2130 states have internal predecessors, (2752), 265 states have call successors, (265), 206 states have call predecessors, (265), 250 states have return successors, (370), 277 states have call predecessors, (370), 261 states have call successors, (370) [2022-07-19 20:35:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3387 transitions. [2022-07-19 20:35:25,956 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3387 transitions. Word has length 65 [2022-07-19 20:35:25,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:25,957 INFO L495 AbstractCegarLoop]: Abstraction has 2611 states and 3387 transitions. [2022-07-19 20:35:25,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:35:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3387 transitions. [2022-07-19 20:35:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:35:25,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:25,959 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] [2022-07-19 20:35:25,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:35:25,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:25,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash 20568174, now seen corresponding path program 1 times [2022-07-19 20:35:25,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:25,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898763890] [2022-07-19 20:35:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:25,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:26,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:26,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:26,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898763890] [2022-07-19 20:35:26,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898763890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:26,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:26,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:35:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331506052] [2022-07-19 20:35:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:26,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:35:26,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:26,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:35:26,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:35:26,021 INFO L87 Difference]: Start difference. First operand 2611 states and 3387 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:35:26,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:26,776 INFO L93 Difference]: Finished difference Result 5927 states and 7532 transitions. [2022-07-19 20:35:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:35:26,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 20:35:26,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:26,793 INFO L225 Difference]: With dead ends: 5927 [2022-07-19 20:35:26,793 INFO L226 Difference]: Without dead ends: 3713 [2022-07-19 20:35:26,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:35:26,799 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 828 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:26,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2066 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:35:26,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-07-19 20:35:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3445. [2022-07-19 20:35:26,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 2742 states have (on average 1.2935813274981764) internal successors, (3547), 2783 states have internal predecessors, (3547), 357 states have call successors, (357), 286 states have call predecessors, (357), 344 states have return successors, (484), 378 states have call predecessors, (484), 353 states have call successors, (484) [2022-07-19 20:35:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4388 transitions. [2022-07-19 20:35:26,965 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4388 transitions. Word has length 66 [2022-07-19 20:35:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:26,966 INFO L495 AbstractCegarLoop]: Abstraction has 3445 states and 4388 transitions. [2022-07-19 20:35:26,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:35:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4388 transitions. [2022-07-19 20:35:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 20:35:26,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:26,968 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] [2022-07-19 20:35:26,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:35:26,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:26,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1226736109, now seen corresponding path program 1 times [2022-07-19 20:35:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:26,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996742244] [2022-07-19 20:35:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:27,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:27,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996742244] [2022-07-19 20:35:27,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996742244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:27,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:27,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:35:27,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698838364] [2022-07-19 20:35:27,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:27,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:35:27,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:35:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:35:27,026 INFO L87 Difference]: Start difference. First operand 3445 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:35:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:27,498 INFO L93 Difference]: Finished difference Result 7317 states and 9162 transitions. [2022-07-19 20:35:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:35:27,499 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-19 20:35:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:27,515 INFO L225 Difference]: With dead ends: 7317 [2022-07-19 20:35:27,515 INFO L226 Difference]: Without dead ends: 4267 [2022-07-19 20:35:27,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:35:27,523 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1381 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:27,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1813 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:35:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-07-19 20:35:27,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 3999. [2022-07-19 20:35:27,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3999 states, 3182 states have (on average 1.2844123192960402) internal successors, (4087), 3227 states have internal predecessors, (4087), 413 states have call successors, (413), 336 states have call predecessors, (413), 402 states have return successors, (557), 438 states have call predecessors, (557), 409 states have call successors, (557) [2022-07-19 20:35:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 5057 transitions. [2022-07-19 20:35:27,724 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 5057 transitions. Word has length 72 [2022-07-19 20:35:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:27,725 INFO L495 AbstractCegarLoop]: Abstraction has 3999 states and 5057 transitions. [2022-07-19 20:35:27,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:35:27,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 5057 transitions. [2022-07-19 20:35:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 20:35:27,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:27,727 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:27,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:35:27,728 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:27,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1142832314, now seen corresponding path program 1 times [2022-07-19 20:35:27,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:27,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145937512] [2022-07-19 20:35:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:27,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:27,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:27,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145937512] [2022-07-19 20:35:27,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145937512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:27,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:27,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:27,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737843613] [2022-07-19 20:35:27,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:27,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:27,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:27,818 INFO L87 Difference]: Start difference. First operand 3999 states and 5057 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:35:28,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:28,379 INFO L93 Difference]: Finished difference Result 5085 states and 6352 transitions. [2022-07-19 20:35:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:35:28,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-19 20:35:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:28,399 INFO L225 Difference]: With dead ends: 5085 [2022-07-19 20:35:28,399 INFO L226 Difference]: Without dead ends: 5082 [2022-07-19 20:35:28,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:35:28,402 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 2428 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:28,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2438 Valid, 1450 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:35:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-07-19 20:35:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 4461. [2022-07-19 20:35:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4461 states, 3537 states have (on average 1.2731128074639526) internal successors, (4503), 3585 states have internal predecessors, (4503), 463 states have call successors, (463), 380 states have call predecessors, (463), 459 states have return successors, (634), 498 states have call predecessors, (634), 460 states have call successors, (634) [2022-07-19 20:35:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 5600 transitions. [2022-07-19 20:35:28,601 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 5600 transitions. Word has length 73 [2022-07-19 20:35:28,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:28,602 INFO L495 AbstractCegarLoop]: Abstraction has 4461 states and 5600 transitions. [2022-07-19 20:35:28,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:35:28,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 5600 transitions. [2022-07-19 20:35:28,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 20:35:28,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:28,604 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:28,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:35:28,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:28,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1069513385, now seen corresponding path program 1 times [2022-07-19 20:35:28,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:28,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152849786] [2022-07-19 20:35:28,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:28,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:28,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:28,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:28,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:28,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:28,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152849786] [2022-07-19 20:35:28,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152849786] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:35:28,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732795460] [2022-07-19 20:35:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:28,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:35:28,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:35:28,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:35:28,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:35:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:28,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 20:35:28,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:35:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:29,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:35:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:29,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732795460] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:35:29,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:35:29,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-19 20:35:29,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102366655] [2022-07-19 20:35:29,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:35:29,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:35:29,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:29,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:35:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:35:29,436 INFO L87 Difference]: Start difference. First operand 4461 states and 5600 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 20:35:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:31,070 INFO L93 Difference]: Finished difference Result 8779 states and 10809 transitions. [2022-07-19 20:35:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 20:35:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-19 20:35:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:31,102 INFO L225 Difference]: With dead ends: 8779 [2022-07-19 20:35:31,103 INFO L226 Difference]: Without dead ends: 8776 [2022-07-19 20:35:31,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-19 20:35:31,107 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 2377 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:31,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2441 Valid, 2516 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:35:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2022-07-19 20:35:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 7878. [2022-07-19 20:35:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7878 states, 6212 states have (on average 1.2533805537669027) internal successors, (7786), 6295 states have internal predecessors, (7786), 822 states have call successors, (822), 694 states have call predecessors, (822), 842 states have return successors, (1135), 891 states have call predecessors, (1135), 819 states have call successors, (1135) [2022-07-19 20:35:31,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 9743 transitions. [2022-07-19 20:35:31,510 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 9743 transitions. Word has length 74 [2022-07-19 20:35:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:31,510 INFO L495 AbstractCegarLoop]: Abstraction has 7878 states and 9743 transitions. [2022-07-19 20:35:31,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 20:35:31,511 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 9743 transitions. [2022-07-19 20:35:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 20:35:31,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:31,512 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:31,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:35:31,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 20:35:31,726 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:31,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash 850950662, now seen corresponding path program 2 times [2022-07-19 20:35:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:31,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443860726] [2022-07-19 20:35:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:31,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:31,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:31,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443860726] [2022-07-19 20:35:31,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443860726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:31,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:31,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:35:31,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515168978] [2022-07-19 20:35:31,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:31,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:35:31,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:35:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:35:31,799 INFO L87 Difference]: Start difference. First operand 7878 states and 9743 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:35:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:32,337 INFO L93 Difference]: Finished difference Result 10472 states and 12952 transitions. [2022-07-19 20:35:32,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:35:32,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-19 20:35:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:32,367 INFO L225 Difference]: With dead ends: 10472 [2022-07-19 20:35:32,367 INFO L226 Difference]: Without dead ends: 4298 [2022-07-19 20:35:32,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:35:32,381 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1318 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:32,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1870 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:35:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2022-07-19 20:35:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 3290. [2022-07-19 20:35:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 2630 states have (on average 1.2688212927756655) internal successors, (3337), 2659 states have internal predecessors, (3337), 341 states have call successors, (341), 276 states have call predecessors, (341), 317 states have return successors, (434), 357 states have call predecessors, (434), 338 states have call successors, (434) [2022-07-19 20:35:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4112 transitions. [2022-07-19 20:35:32,585 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4112 transitions. Word has length 77 [2022-07-19 20:35:32,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:32,586 INFO L495 AbstractCegarLoop]: Abstraction has 3290 states and 4112 transitions. [2022-07-19 20:35:32,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:35:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4112 transitions. [2022-07-19 20:35:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 20:35:32,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:32,589 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:32,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:35:32,589 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:32,590 INFO L85 PathProgramCache]: Analyzing trace with hash -416080695, now seen corresponding path program 1 times [2022-07-19 20:35:32,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:32,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425439630] [2022-07-19 20:35:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:32,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:32,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:32,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:35:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:35:32,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:32,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425439630] [2022-07-19 20:35:32,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425439630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:32,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:32,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:35:32,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751729018] [2022-07-19 20:35:32,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:32,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:35:32,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:32,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:35:32,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:35:32,670 INFO L87 Difference]: Start difference. First operand 3290 states and 4112 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:35:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:33,898 INFO L93 Difference]: Finished difference Result 9074 states and 11109 transitions. [2022-07-19 20:35:33,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 20:35:33,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-19 20:35:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:33,915 INFO L225 Difference]: With dead ends: 9074 [2022-07-19 20:35:33,916 INFO L226 Difference]: Without dead ends: 5376 [2022-07-19 20:35:33,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-19 20:35:33,926 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 1894 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:33,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 2208 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:35:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2022-07-19 20:35:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 5116. [2022-07-19 20:35:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5116 states, 4021 states have (on average 1.2302909723949267) internal successors, (4947), 4087 states have internal predecessors, (4947), 541 states have call successors, (541), 448 states have call predecessors, (541), 552 states have return successors, (784), 583 states have call predecessors, (784), 538 states have call successors, (784) [2022-07-19 20:35:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 6272 transitions. [2022-07-19 20:35:34,207 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 6272 transitions. Word has length 84 [2022-07-19 20:35:34,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:34,208 INFO L495 AbstractCegarLoop]: Abstraction has 5116 states and 6272 transitions. [2022-07-19 20:35:34,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:35:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 6272 transitions. [2022-07-19 20:35:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 20:35:34,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:34,210 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:34,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:35:34,210 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:34,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash 322850660, now seen corresponding path program 1 times [2022-07-19 20:35:34,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:34,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303859795] [2022-07-19 20:35:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:34,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 20:35:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 20:35:34,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:34,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303859795] [2022-07-19 20:35:34,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303859795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:34,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:34,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:35:34,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141516959] [2022-07-19 20:35:34,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:34,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:35:34,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:34,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:35:34,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:35:34,278 INFO L87 Difference]: Start difference. First operand 5116 states and 6272 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:35:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:35,506 INFO L93 Difference]: Finished difference Result 8476 states and 10290 transitions. [2022-07-19 20:35:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 20:35:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-19 20:35:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:35,518 INFO L225 Difference]: With dead ends: 8476 [2022-07-19 20:35:35,518 INFO L226 Difference]: Without dead ends: 4277 [2022-07-19 20:35:35,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-19 20:35:35,526 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1953 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:35,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 2569 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:35:35,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2022-07-19 20:35:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3856. [2022-07-19 20:35:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3027 states have (on average 1.2226627023455567) internal successors, (3701), 3081 states have internal predecessors, (3701), 406 states have call successors, (406), 330 states have call predecessors, (406), 421 states have return successors, (553), 447 states have call predecessors, (553), 403 states have call successors, (553) [2022-07-19 20:35:35,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 4660 transitions. [2022-07-19 20:35:35,733 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 4660 transitions. Word has length 93 [2022-07-19 20:35:35,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:35,733 INFO L495 AbstractCegarLoop]: Abstraction has 3856 states and 4660 transitions. [2022-07-19 20:35:35,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:35:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 4660 transitions. [2022-07-19 20:35:35,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:35:35,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:35,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:35,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:35:35,738 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1648604991, now seen corresponding path program 1 times [2022-07-19 20:35:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:35,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91164668] [2022-07-19 20:35:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:35,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:35:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 20:35:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:35:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:35:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:35,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:35:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 20:35:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 20:35:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 20:35:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:35,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91164668] [2022-07-19 20:35:35,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91164668] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:35:35,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785052762] [2022-07-19 20:35:35,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:35,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:35:35,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:35:35,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:35:35,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 20:35:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 20:35:36,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:35:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 20:35:36,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:35:36,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785052762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:36,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:35:36,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-19 20:35:36,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864630205] [2022-07-19 20:35:36,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:36,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:35:36,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:36,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:35:36,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:35:36,044 INFO L87 Difference]: Start difference. First operand 3856 states and 4660 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 20:35:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:36,173 INFO L93 Difference]: Finished difference Result 5731 states and 6899 transitions. [2022-07-19 20:35:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:35:36,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-19 20:35:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:36,180 INFO L225 Difference]: With dead ends: 5731 [2022-07-19 20:35:36,181 INFO L226 Difference]: Without dead ends: 2272 [2022-07-19 20:35:36,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:35:36,187 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 34 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:36,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3620 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:35:36,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2022-07-19 20:35:36,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2150. [2022-07-19 20:35:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1767 states have (on average 1.2512733446519524) internal successors, (2211), 1784 states have internal predecessors, (2211), 195 states have call successors, (195), 144 states have call predecessors, (195), 186 states have return successors, (260), 222 states have call predecessors, (260), 192 states have call successors, (260) [2022-07-19 20:35:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2666 transitions. [2022-07-19 20:35:36,293 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2666 transitions. Word has length 145 [2022-07-19 20:35:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:36,293 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 2666 transitions. [2022-07-19 20:35:36,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 20:35:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2666 transitions. [2022-07-19 20:35:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 20:35:36,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:36,297 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:36,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 20:35:36,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 20:35:36,523 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2137728743, now seen corresponding path program 1 times [2022-07-19 20:35:36,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:36,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814793956] [2022-07-19 20:35:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:36,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:35:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 20:35:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 20:35:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 20:35:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 20:35:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 20:35:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 20:35:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:36,595 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 20:35:36,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:36,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814793956] [2022-07-19 20:35:36,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814793956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:36,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:36,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:35:36,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397884670] [2022-07-19 20:35:36,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:36,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:35:36,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:35:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:35:36,598 INFO L87 Difference]: Start difference. First operand 2150 states and 2666 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 20:35:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:37,184 INFO L93 Difference]: Finished difference Result 2198 states and 2716 transitions. [2022-07-19 20:35:37,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:35:37,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-19 20:35:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:37,189 INFO L225 Difference]: With dead ends: 2198 [2022-07-19 20:35:37,189 INFO L226 Difference]: Without dead ends: 1824 [2022-07-19 20:35:37,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:35:37,191 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1068 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:37,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1669 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:35:37,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-07-19 20:35:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1779. [2022-07-19 20:35:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1480 states have (on average 1.2736486486486487) internal successors, (1885), 1494 states have internal predecessors, (1885), 154 states have call successors, (154), 109 states have call predecessors, (154), 143 states have return successors, (205), 176 states have call predecessors, (205), 151 states have call successors, (205) [2022-07-19 20:35:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2244 transitions. [2022-07-19 20:35:37,313 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2244 transitions. Word has length 147 [2022-07-19 20:35:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:37,314 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2244 transitions. [2022-07-19 20:35:37,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 20:35:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2244 transitions. [2022-07-19 20:35:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 20:35:37,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:37,317 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:37,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:35:37,317 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:37,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2127164153, now seen corresponding path program 1 times [2022-07-19 20:35:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:37,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126684670] [2022-07-19 20:35:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:37,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:35:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 20:35:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 20:35:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:35:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 20:35:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 20:35:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 20:35:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 20:35:37,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:37,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126684670] [2022-07-19 20:35:37,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126684670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:37,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:37,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852687870] [2022-07-19 20:35:37,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:37,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:37,425 INFO L87 Difference]: Start difference. First operand 1779 states and 2244 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 20:35:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:38,216 INFO L93 Difference]: Finished difference Result 3045 states and 3743 transitions. [2022-07-19 20:35:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:35:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-19 20:35:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:38,221 INFO L225 Difference]: With dead ends: 3045 [2022-07-19 20:35:38,221 INFO L226 Difference]: Without dead ends: 1752 [2022-07-19 20:35:38,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:35:38,224 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 681 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:38,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 2501 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:35:38,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2022-07-19 20:35:38,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1668. [2022-07-19 20:35:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1393 states have (on average 1.2835606604450827) internal successors, (1788), 1407 states have internal predecessors, (1788), 142 states have call successors, (142), 99 states have call predecessors, (142), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2022-07-19 20:35:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2117 transitions. [2022-07-19 20:35:38,305 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2117 transitions. Word has length 159 [2022-07-19 20:35:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:38,306 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2117 transitions. [2022-07-19 20:35:38,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 20:35:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2117 transitions. [2022-07-19 20:35:38,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 20:35:38,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:38,309 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:38,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:35:38,309 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:38,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:38,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1961116033, now seen corresponding path program 1 times [2022-07-19 20:35:38,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:38,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845229158] [2022-07-19 20:35:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:38,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:38,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:35:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:35:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:35:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:35:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:35:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 20:35:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 20:35:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 20:35:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:35:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:35:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 20:35:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 20:35:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:35:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,449 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 20:35:38,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:38,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845229158] [2022-07-19 20:35:38,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845229158] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:35:38,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456055655] [2022-07-19 20:35:38,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:38,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:35:38,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:35:38,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:35:38,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 20:35:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:38,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 20:35:38,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:35:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 20:35:38,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:35:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-19 20:35:39,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456055655] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:35:39,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:35:39,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-19 20:35:39,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058519206] [2022-07-19 20:35:39,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:35:39,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 20:35:39,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:39,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 20:35:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:35:39,027 INFO L87 Difference]: Start difference. First operand 1668 states and 2117 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-19 20:35:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:40,210 INFO L93 Difference]: Finished difference Result 3404 states and 4256 transitions. [2022-07-19 20:35:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 20:35:40,210 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-19 20:35:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:40,219 INFO L225 Difference]: With dead ends: 3404 [2022-07-19 20:35:40,219 INFO L226 Difference]: Without dead ends: 2059 [2022-07-19 20:35:40,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-19 20:35:40,222 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 2456 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:40,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 2044 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:35:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-07-19 20:35:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1946. [2022-07-19 20:35:40,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1596 states have (on average 1.2474937343358397) internal successors, (1991), 1611 states have internal predecessors, (1991), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-19 20:35:40,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2429 transitions. [2022-07-19 20:35:40,327 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2429 transitions. Word has length 162 [2022-07-19 20:35:40,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:40,327 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2429 transitions. [2022-07-19 20:35:40,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-19 20:35:40,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2429 transitions. [2022-07-19 20:35:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:35:40,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:40,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:40,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 20:35:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 20:35:40,544 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1484709716, now seen corresponding path program 1 times [2022-07-19 20:35:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:40,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962557358] [2022-07-19 20:35:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:40,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:35:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:40,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:35:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:40,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:35:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:40,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:35:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:40,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962557358] [2022-07-19 20:35:40,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962557358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:40,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:40,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:35:40,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205749806] [2022-07-19 20:35:40,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:40,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:35:40,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:40,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:35:40,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:35:40,678 INFO L87 Difference]: Start difference. First operand 1946 states and 2429 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:42,256 INFO L93 Difference]: Finished difference Result 2461 states and 3263 transitions. [2022-07-19 20:35:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:35:42,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:35:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:42,262 INFO L225 Difference]: With dead ends: 2461 [2022-07-19 20:35:42,262 INFO L226 Difference]: Without dead ends: 2088 [2022-07-19 20:35:42,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:35:42,264 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1139 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:42,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 1356 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:35:42,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2022-07-19 20:35:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1946. [2022-07-19 20:35:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1596 states have (on average 1.2468671679197996) internal successors, (1990), 1611 states have internal predecessors, (1990), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-19 20:35:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2428 transitions. [2022-07-19 20:35:42,417 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2428 transitions. Word has length 179 [2022-07-19 20:35:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:42,418 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2428 transitions. [2022-07-19 20:35:42,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2428 transitions. [2022-07-19 20:35:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:35:42,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:42,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:42,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:35:42,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -794878226, now seen corresponding path program 1 times [2022-07-19 20:35:42,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:42,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154817311] [2022-07-19 20:35:42,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:42,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:42,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:42,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:35:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:35:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:35:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:35:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:42,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:42,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154817311] [2022-07-19 20:35:42,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154817311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:42,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:42,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:35:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132449753] [2022-07-19 20:35:42,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:42,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:35:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:35:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:35:42,530 INFO L87 Difference]: Start difference. First operand 1946 states and 2428 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:44,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:44,055 INFO L93 Difference]: Finished difference Result 2453 states and 3246 transitions. [2022-07-19 20:35:44,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:35:44,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:35:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:44,064 INFO L225 Difference]: With dead ends: 2453 [2022-07-19 20:35:44,065 INFO L226 Difference]: Without dead ends: 2088 [2022-07-19 20:35:44,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:35:44,067 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 1130 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:44,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1354 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:35:44,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2022-07-19 20:35:44,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1946. [2022-07-19 20:35:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1596 states have (on average 1.2462406015037595) internal successors, (1989), 1611 states have internal predecessors, (1989), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-19 20:35:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2427 transitions. [2022-07-19 20:35:44,220 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2427 transitions. Word has length 179 [2022-07-19 20:35:44,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:44,220 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2427 transitions. [2022-07-19 20:35:44,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:44,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2427 transitions. [2022-07-19 20:35:44,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:35:44,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:44,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:44,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:35:44,223 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:44,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:44,224 INFO L85 PathProgramCache]: Analyzing trace with hash -8880336, now seen corresponding path program 1 times [2022-07-19 20:35:44,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:44,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670572580] [2022-07-19 20:35:44,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:44,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:44,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:35:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:35:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:35:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:44,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:35:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:44,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670572580] [2022-07-19 20:35:44,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670572580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:44,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:44,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:35:44,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214008613] [2022-07-19 20:35:44,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:44,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:35:44,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:44,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:35:44,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:35:44,371 INFO L87 Difference]: Start difference. First operand 1946 states and 2427 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:47,070 INFO L93 Difference]: Finished difference Result 2972 states and 4090 transitions. [2022-07-19 20:35:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:35:47,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:35:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:47,076 INFO L225 Difference]: With dead ends: 2972 [2022-07-19 20:35:47,076 INFO L226 Difference]: Without dead ends: 2610 [2022-07-19 20:35:47,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:35:47,078 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 1785 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:47,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 1947 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 20:35:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2022-07-19 20:35:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2325. [2022-07-19 20:35:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 1947 states have (on average 1.310220852593734) internal successors, (2551), 1963 states have internal predecessors, (2551), 203 states have call successors, (203), 143 states have call predecessors, (203), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2022-07-19 20:35:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3034 transitions. [2022-07-19 20:35:47,289 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3034 transitions. Word has length 179 [2022-07-19 20:35:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:47,290 INFO L495 AbstractCegarLoop]: Abstraction has 2325 states and 3034 transitions. [2022-07-19 20:35:47,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3034 transitions. [2022-07-19 20:35:47,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:35:47,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:47,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:47,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:35:47,293 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1394620116, now seen corresponding path program 1 times [2022-07-19 20:35:47,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:47,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178753553] [2022-07-19 20:35:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:47,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:35:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:35:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:35:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:47,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:35:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:47,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:47,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178753553] [2022-07-19 20:35:47,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178753553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:47,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:47,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:47,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193043515] [2022-07-19 20:35:47,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:47,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:47,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:47,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:47,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:47,454 INFO L87 Difference]: Start difference. First operand 2325 states and 3034 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:50,683 INFO L93 Difference]: Finished difference Result 3893 states and 5582 transitions. [2022-07-19 20:35:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:35:50,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:35:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:50,698 INFO L225 Difference]: With dead ends: 3893 [2022-07-19 20:35:50,698 INFO L226 Difference]: Without dead ends: 3152 [2022-07-19 20:35:50,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:35:50,704 INFO L413 NwaCegarLoop]: 1132 mSDtfsCounter, 1817 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:50,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 3256 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 20:35:50,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-07-19 20:35:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 2678. [2022-07-19 20:35:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2272 states have (on average 1.3472711267605635) internal successors, (3061), 2289 states have internal predecessors, (3061), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-19 20:35:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3588 transitions. [2022-07-19 20:35:50,924 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3588 transitions. Word has length 179 [2022-07-19 20:35:50,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:50,924 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3588 transitions. [2022-07-19 20:35:50,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3588 transitions. [2022-07-19 20:35:50,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:35:50,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:50,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:50,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:35:50,928 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:50,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2005889174, now seen corresponding path program 1 times [2022-07-19 20:35:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:50,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438204471] [2022-07-19 20:35:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:50,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:50,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:35:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:35:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:35:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:51,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:35:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:51,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:51,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438204471] [2022-07-19 20:35:51,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438204471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:51,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:51,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:51,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227841745] [2022-07-19 20:35:51,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:51,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:51,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:51,066 INFO L87 Difference]: Start difference. First operand 2678 states and 3588 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:52,709 INFO L93 Difference]: Finished difference Result 4262 states and 6174 transitions. [2022-07-19 20:35:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:35:52,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:35:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:52,725 INFO L225 Difference]: With dead ends: 4262 [2022-07-19 20:35:52,725 INFO L226 Difference]: Without dead ends: 3168 [2022-07-19 20:35:52,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:35:52,732 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1564 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:52,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 1672 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:35:52,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2022-07-19 20:35:52,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 2678. [2022-07-19 20:35:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2272 states have (on average 1.345950704225352) internal successors, (3058), 2289 states have internal predecessors, (3058), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-19 20:35:53,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3585 transitions. [2022-07-19 20:35:53,003 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3585 transitions. Word has length 179 [2022-07-19 20:35:53,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:53,003 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3585 transitions. [2022-07-19 20:35:53,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3585 transitions. [2022-07-19 20:35:53,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:35:53,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:53,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:53,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:35:53,012 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:53,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:53,013 INFO L85 PathProgramCache]: Analyzing trace with hash 883886444, now seen corresponding path program 1 times [2022-07-19 20:35:53,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:53,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451515233] [2022-07-19 20:35:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:53,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:53,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:35:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:53,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:35:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:35:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:35:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:53,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:53,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:53,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451515233] [2022-07-19 20:35:53,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451515233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:53,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:53,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:53,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646137478] [2022-07-19 20:35:53,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:53,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:53,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:53,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:53,166 INFO L87 Difference]: Start difference. First operand 2678 states and 3585 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:55,111 INFO L93 Difference]: Finished difference Result 4258 states and 6157 transitions. [2022-07-19 20:35:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:35:55,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:35:55,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:55,125 INFO L225 Difference]: With dead ends: 4258 [2022-07-19 20:35:55,125 INFO L226 Difference]: Without dead ends: 3164 [2022-07-19 20:35:55,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:35:55,130 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 1343 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:55,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1918 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:35:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-07-19 20:35:55,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2678. [2022-07-19 20:35:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2272 states have (on average 1.3446302816901408) internal successors, (3055), 2289 states have internal predecessors, (3055), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-19 20:35:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3582 transitions. [2022-07-19 20:35:55,359 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3582 transitions. Word has length 179 [2022-07-19 20:35:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:55,359 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3582 transitions. [2022-07-19 20:35:55,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3582 transitions. [2022-07-19 20:35:55,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:35:55,363 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:55,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:55,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 20:35:55,363 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1516746966, now seen corresponding path program 1 times [2022-07-19 20:35:55,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:55,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914421493] [2022-07-19 20:35:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:55,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:35:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:55,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:35:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:35:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:35:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:55,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:55,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914421493] [2022-07-19 20:35:55,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914421493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:55,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:55,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:55,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631177429] [2022-07-19 20:35:55,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:55,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:55,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:55,490 INFO L87 Difference]: Start difference. First operand 2678 states and 3582 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:58,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:35:58,811 INFO L93 Difference]: Finished difference Result 5241 states and 7712 transitions. [2022-07-19 20:35:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:35:58,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:35:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:35:58,827 INFO L225 Difference]: With dead ends: 5241 [2022-07-19 20:35:58,827 INFO L226 Difference]: Without dead ends: 4147 [2022-07-19 20:35:58,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:35:58,832 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 1798 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3261 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:35:58,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 3237 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 20:35:58,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2022-07-19 20:35:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 3393. [2022-07-19 20:35:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2931 states have (on average 1.39338109860116) internal successors, (4084), 2950 states have internal predecessors, (4084), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-19 20:35:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4703 transitions. [2022-07-19 20:35:59,168 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4703 transitions. Word has length 179 [2022-07-19 20:35:59,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:35:59,169 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4703 transitions. [2022-07-19 20:35:59,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:35:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4703 transitions. [2022-07-19 20:35:59,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:35:59,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:35:59,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:35:59,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 20:35:59,174 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:35:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:35:59,175 INFO L85 PathProgramCache]: Analyzing trace with hash -70166100, now seen corresponding path program 1 times [2022-07-19 20:35:59,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:35:59,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648169714] [2022-07-19 20:35:59,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:35:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:35:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:35:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:59,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:35:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:35:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:35:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:59,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:35:59,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:35:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:35:59,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:35:59,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648169714] [2022-07-19 20:35:59,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648169714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:35:59,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:35:59,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:35:59,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088767122] [2022-07-19 20:35:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:35:59,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:35:59,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:35:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:35:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:35:59,315 INFO L87 Difference]: Start difference. First operand 3393 states and 4703 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:01,151 INFO L93 Difference]: Finished difference Result 5942 states and 8820 transitions. [2022-07-19 20:36:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:36:01,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:01,162 INFO L225 Difference]: With dead ends: 5942 [2022-07-19 20:36:01,162 INFO L226 Difference]: Without dead ends: 4133 [2022-07-19 20:36:01,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:36:01,167 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1342 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:01,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 1911 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:36:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2022-07-19 20:36:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3393. [2022-07-19 20:36:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2931 states have (on average 1.3916751961787786) internal successors, (4079), 2950 states have internal predecessors, (4079), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-19 20:36:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4698 transitions. [2022-07-19 20:36:01,486 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4698 transitions. Word has length 179 [2022-07-19 20:36:01,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:01,486 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4698 transitions. [2022-07-19 20:36:01,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:01,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4698 transitions. [2022-07-19 20:36:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:36:01,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:01,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:01,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 20:36:01,490 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash -993333526, now seen corresponding path program 1 times [2022-07-19 20:36:01,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:01,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345659974] [2022-07-19 20:36:01,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:01,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:36:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:36:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:01,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:36:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:01,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:36:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:01,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:01,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:01,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345659974] [2022-07-19 20:36:01,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345659974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:01,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:01,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:01,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026025621] [2022-07-19 20:36:01,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:01,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:01,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:01,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:01,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:01,660 INFO L87 Difference]: Start difference. First operand 3393 states and 4698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:05,089 INFO L93 Difference]: Finished difference Result 7852 states and 11825 transitions. [2022-07-19 20:36:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:36:05,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:05,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:05,104 INFO L225 Difference]: With dead ends: 7852 [2022-07-19 20:36:05,105 INFO L226 Difference]: Without dead ends: 6043 [2022-07-19 20:36:05,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:36:05,110 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 1790 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:05,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 3226 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 20:36:05,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2022-07-19 20:36:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 4827. [2022-07-19 20:36:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.4425111685868799) internal successors, (6135), 4276 states have internal predecessors, (6135), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-19 20:36:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6944 transitions. [2022-07-19 20:36:05,518 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6944 transitions. Word has length 179 [2022-07-19 20:36:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:05,518 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6944 transitions. [2022-07-19 20:36:05,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6944 transitions. [2022-07-19 20:36:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:36:05,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:05,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:05,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 20:36:05,522 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash -607471124, now seen corresponding path program 1 times [2022-07-19 20:36:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:05,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460704246] [2022-07-19 20:36:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:05,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:36:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:05,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:36:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:36:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:36:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:05,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:05,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460704246] [2022-07-19 20:36:05,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460704246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:05,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:05,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:05,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525249510] [2022-07-19 20:36:05,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:05,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:05,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:05,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:05,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:05,673 INFO L87 Difference]: Start difference. First operand 4827 states and 6944 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:07,496 INFO L93 Difference]: Finished difference Result 9306 states and 14139 transitions. [2022-07-19 20:36:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:36:07,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:07,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:07,512 INFO L225 Difference]: With dead ends: 9306 [2022-07-19 20:36:07,512 INFO L226 Difference]: Without dead ends: 6063 [2022-07-19 20:36:07,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:36:07,519 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1563 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:07,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1652 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:36:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2022-07-19 20:36:07,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 4827. [2022-07-19 20:36:07,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.4403950152833294) internal successors, (6126), 4276 states have internal predecessors, (6126), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-19 20:36:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6935 transitions. [2022-07-19 20:36:07,920 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6935 transitions. Word has length 179 [2022-07-19 20:36:07,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:07,921 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6935 transitions. [2022-07-19 20:36:07,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6935 transitions. [2022-07-19 20:36:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:36:07,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:07,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:07,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 20:36:07,925 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:07,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:07,925 INFO L85 PathProgramCache]: Analyzing trace with hash -872118614, now seen corresponding path program 1 times [2022-07-19 20:36:07,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:07,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534485375] [2022-07-19 20:36:07,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:07,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:07,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:36:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:36:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:36:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:36:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:08,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:08,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534485375] [2022-07-19 20:36:08,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534485375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:08,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:08,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293224434] [2022-07-19 20:36:08,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:08,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:08,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:08,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:08,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:08,058 INFO L87 Difference]: Start difference. First operand 4827 states and 6935 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:10,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:10,089 INFO L93 Difference]: Finished difference Result 9286 states and 14072 transitions. [2022-07-19 20:36:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:36:10,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:10,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:10,107 INFO L225 Difference]: With dead ends: 9286 [2022-07-19 20:36:10,107 INFO L226 Difference]: Without dead ends: 6043 [2022-07-19 20:36:10,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:36:10,116 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1340 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:10,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 1896 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:36:10,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2022-07-19 20:36:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 4827. [2022-07-19 20:36:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.438278861979779) internal successors, (6117), 4276 states have internal predecessors, (6117), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-19 20:36:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6926 transitions. [2022-07-19 20:36:10,614 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6926 transitions. Word has length 179 [2022-07-19 20:36:10,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:10,614 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6926 transitions. [2022-07-19 20:36:10,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6926 transitions. [2022-07-19 20:36:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:36:10,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:10,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:10,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 20:36:10,619 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2099669736, now seen corresponding path program 1 times [2022-07-19 20:36:10,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:10,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640766780] [2022-07-19 20:36:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:10,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:10,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:10,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:36:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:36:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:10,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:36:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:36:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:10,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:10,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640766780] [2022-07-19 20:36:10,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640766780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:10,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:10,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:10,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824296509] [2022-07-19 20:36:10,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:10,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:10,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:10,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:10,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:10,754 INFO L87 Difference]: Start difference. First operand 4827 states and 6926 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:12,670 INFO L93 Difference]: Finished difference Result 9276 states and 14025 transitions. [2022-07-19 20:36:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:36:12,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:12,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:12,687 INFO L225 Difference]: With dead ends: 9276 [2022-07-19 20:36:12,687 INFO L226 Difference]: Without dead ends: 6033 [2022-07-19 20:36:12,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:36:12,697 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 1557 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:12,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 1642 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:36:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6033 states. [2022-07-19 20:36:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6033 to 4827. [2022-07-19 20:36:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.4361627086762285) internal successors, (6108), 4276 states have internal predecessors, (6108), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-19 20:36:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6917 transitions. [2022-07-19 20:36:13,213 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6917 transitions. Word has length 179 [2022-07-19 20:36:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:13,213 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6917 transitions. [2022-07-19 20:36:13,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6917 transitions. [2022-07-19 20:36:13,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:36:13,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:13,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:13,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 20:36:13,217 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash -298318102, now seen corresponding path program 1 times [2022-07-19 20:36:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:13,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454280005] [2022-07-19 20:36:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:13,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:36:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:36:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:36:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:36:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:13,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:13,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454280005] [2022-07-19 20:36:13,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454280005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:13,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:13,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:13,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840758297] [2022-07-19 20:36:13,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:13,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:13,369 INFO L87 Difference]: Start difference. First operand 4827 states and 6917 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:17,319 INFO L93 Difference]: Finished difference Result 13044 states and 19901 transitions. [2022-07-19 20:36:17,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:36:17,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:17,342 INFO L225 Difference]: With dead ends: 13044 [2022-07-19 20:36:17,343 INFO L226 Difference]: Without dead ends: 9801 [2022-07-19 20:36:17,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:36:17,351 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 1767 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3156 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:17,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 3197 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 3156 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 20:36:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2022-07-19 20:36:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 7736. [2022-07-19 20:36:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 6938 states have (on average 1.4773710002882676) internal successors, (10250), 6969 states have internal predecessors, (10250), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-19 20:36:18,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 11457 transitions. [2022-07-19 20:36:18,086 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 11457 transitions. Word has length 179 [2022-07-19 20:36:18,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:18,086 INFO L495 AbstractCegarLoop]: Abstraction has 7736 states and 11457 transitions. [2022-07-19 20:36:18,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:18,087 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 11457 transitions. [2022-07-19 20:36:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:36:18,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:18,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:18,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 20:36:18,092 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash 39969448, now seen corresponding path program 1 times [2022-07-19 20:36:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:18,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522156533] [2022-07-19 20:36:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:18,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:36:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:36:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:36:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:18,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:36:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:18,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:18,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522156533] [2022-07-19 20:36:18,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522156533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:18,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:18,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:18,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684803836] [2022-07-19 20:36:18,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:18,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:18,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:18,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:18,218 INFO L87 Difference]: Start difference. First operand 7736 states and 11457 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:20,802 INFO L93 Difference]: Finished difference Result 16010 states and 24628 transitions. [2022-07-19 20:36:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:36:20,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:20,827 INFO L225 Difference]: With dead ends: 16010 [2022-07-19 20:36:20,828 INFO L226 Difference]: Without dead ends: 9858 [2022-07-19 20:36:20,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:36:20,839 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 1335 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:20,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 1883 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:36:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2022-07-19 20:36:21,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 7736. [2022-07-19 20:36:21,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 6938 states have (on average 1.4749207264341309) internal successors, (10233), 6969 states have internal predecessors, (10233), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-19 20:36:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 11440 transitions. [2022-07-19 20:36:21,530 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 11440 transitions. Word has length 179 [2022-07-19 20:36:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:21,530 INFO L495 AbstractCegarLoop]: Abstraction has 7736 states and 11440 transitions. [2022-07-19 20:36:21,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 11440 transitions. [2022-07-19 20:36:21,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:36:21,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:21,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:21,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 20:36:21,562 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash 466523946, now seen corresponding path program 1 times [2022-07-19 20:36:21,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:21,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922544433] [2022-07-19 20:36:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:36:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:36:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:36:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:36:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:21,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922544433] [2022-07-19 20:36:21,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922544433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:21,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:21,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888732260] [2022-07-19 20:36:21,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:21,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:21,715 INFO L87 Difference]: Start difference. First operand 7736 states and 11440 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:27,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:27,589 INFO L93 Difference]: Finished difference Result 26133 states and 40361 transitions. [2022-07-19 20:36:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:36:27,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:27,649 INFO L225 Difference]: With dead ends: 26133 [2022-07-19 20:36:27,649 INFO L226 Difference]: Without dead ends: 19981 [2022-07-19 20:36:27,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:36:27,671 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 2205 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:27,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2247 Valid, 3172 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 20:36:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19981 states. [2022-07-19 20:36:29,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19981 to 13402. [2022-07-19 20:36:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13402 states, 12172 states have (on average 1.5009037134406835) internal successors, (18269), 12219 states have internal predecessors, (18269), 838 states have call successors, (838), 329 states have call predecessors, (838), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2022-07-19 20:36:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13402 states to 13402 states and 20294 transitions. [2022-07-19 20:36:29,107 INFO L78 Accepts]: Start accepts. Automaton has 13402 states and 20294 transitions. Word has length 179 [2022-07-19 20:36:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:29,108 INFO L495 AbstractCegarLoop]: Abstraction has 13402 states and 20294 transitions. [2022-07-19 20:36:29,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 13402 states and 20294 transitions. [2022-07-19 20:36:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:36:29,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:29,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:29,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 20:36:29,115 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash -73905560, now seen corresponding path program 1 times [2022-07-19 20:36:29,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:29,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201469329] [2022-07-19 20:36:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:29,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:36:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:36:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:36:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:36:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:29,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:29,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201469329] [2022-07-19 20:36:29,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201469329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:29,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:29,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:29,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768557557] [2022-07-19 20:36:29,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:29,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:29,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:29,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:29,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:29,234 INFO L87 Difference]: Start difference. First operand 13402 states and 20294 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:38,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:38,222 INFO L93 Difference]: Finished difference Result 48757 states and 75985 transitions. [2022-07-19 20:36:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:36:38,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:38,316 INFO L225 Difference]: With dead ends: 48757 [2022-07-19 20:36:38,316 INFO L226 Difference]: Without dead ends: 36939 [2022-07-19 20:36:38,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:36:38,351 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 1861 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:38,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 3343 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 20:36:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36939 states. [2022-07-19 20:36:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36939 to 24843. [2022-07-19 20:36:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24843 states, 22765 states have (on average 1.518778827146936) internal successors, (34575), 22844 states have internal predecessors, (34575), 1462 states have call successors, (1462), 521 states have call predecessors, (1462), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2022-07-19 20:36:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24843 states to 24843 states and 38366 transitions. [2022-07-19 20:36:41,292 INFO L78 Accepts]: Start accepts. Automaton has 24843 states and 38366 transitions. Word has length 179 [2022-07-19 20:36:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:41,293 INFO L495 AbstractCegarLoop]: Abstraction has 24843 states and 38366 transitions. [2022-07-19 20:36:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 24843 states and 38366 transitions. [2022-07-19 20:36:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:36:41,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:41,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:41,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 20:36:41,303 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash -229886102, now seen corresponding path program 1 times [2022-07-19 20:36:41,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:41,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610831193] [2022-07-19 20:36:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:41,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:41,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:36:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:41,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:36:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:36:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:36:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:41,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:41,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610831193] [2022-07-19 20:36:41,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610831193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:41,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:41,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479378757] [2022-07-19 20:36:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:41,432 INFO L87 Difference]: Start difference. First operand 24843 states and 38366 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:36:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:56,202 INFO L93 Difference]: Finished difference Result 93764 states and 147575 transitions. [2022-07-19 20:36:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:36:56,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:36:56,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:56,396 INFO L225 Difference]: With dead ends: 93764 [2022-07-19 20:36:56,397 INFO L226 Difference]: Without dead ends: 70505 [2022-07-19 20:36:56,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:36:56,462 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 2129 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:56,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 3164 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 3103 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 20:36:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70505 states. [2022-07-19 20:37:02,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70505 to 47692. [2022-07-19 20:37:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47692 states, 43950 states have (on average 1.5293970420932879) internal successors, (67217), 44093 states have internal predecessors, (67217), 2678 states have call successors, (2678), 905 states have call predecessors, (2678), 1062 states have return successors, (5067), 2821 states have call predecessors, (5067), 2675 states have call successors, (5067) [2022-07-19 20:37:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47692 states to 47692 states and 74962 transitions. [2022-07-19 20:37:02,304 INFO L78 Accepts]: Start accepts. Automaton has 47692 states and 74962 transitions. Word has length 179 [2022-07-19 20:37:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:02,304 INFO L495 AbstractCegarLoop]: Abstraction has 47692 states and 74962 transitions. [2022-07-19 20:37:02,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:02,304 INFO L276 IsEmpty]: Start isEmpty. Operand 47692 states and 74962 transitions. [2022-07-19 20:37:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:37:02,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:02,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:02,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 20:37:02,322 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash 180724264, now seen corresponding path program 1 times [2022-07-19 20:37:02,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:02,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968092405] [2022-07-19 20:37:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:02,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:37:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:37:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:37:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:37:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:02,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:02,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968092405] [2022-07-19 20:37:02,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968092405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:02,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:02,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:02,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550112950] [2022-07-19 20:37:02,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:02,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:02,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:02,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:02,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:02,479 INFO L87 Difference]: Start difference. First operand 47692 states and 74962 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:29,432 INFO L93 Difference]: Finished difference Result 180673 states and 287993 transitions. [2022-07-19 20:37:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:37:29,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-19 20:37:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:29,913 INFO L225 Difference]: With dead ends: 180673 [2022-07-19 20:37:29,913 INFO L226 Difference]: Without dead ends: 134565 [2022-07-19 20:37:30,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:30,257 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 1828 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:30,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 3279 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 20:37:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134565 states. [2022-07-19 20:37:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134565 to 93454. [2022-07-19 20:37:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93454 states, 86448 states have (on average 1.5364265223024245) internal successors, (132821), 86719 states have internal predecessors, (132821), 5046 states have call successors, (5046), 1673 states have call predecessors, (5046), 1958 states have return successors, (11937), 5317 states have call predecessors, (11937), 5043 states have call successors, (11937) [2022-07-19 20:37:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93454 states to 93454 states and 149804 transitions. [2022-07-19 20:37:42,132 INFO L78 Accepts]: Start accepts. Automaton has 93454 states and 149804 transitions. Word has length 179 [2022-07-19 20:37:42,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:42,133 INFO L495 AbstractCegarLoop]: Abstraction has 93454 states and 149804 transitions. [2022-07-19 20:37:42,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:42,134 INFO L276 IsEmpty]: Start isEmpty. Operand 93454 states and 149804 transitions. [2022-07-19 20:37:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:37:42,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:42,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:42,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 20:37:42,172 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:42,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1955158938, now seen corresponding path program 1 times [2022-07-19 20:37:42,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:42,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581153361] [2022-07-19 20:37:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:42,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 20:37:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:37:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:37:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 20:37:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:42,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:42,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581153361] [2022-07-19 20:37:42,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581153361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:42,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:42,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:42,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785196658] [2022-07-19 20:37:42,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:42,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:42,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:42,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:42,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:42,305 INFO L87 Difference]: Start difference. First operand 93454 states and 149804 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)