./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_1.cil-2+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 0bef365bd29db1ac20249b1e3139137560ac4134ff54f631658e57cc437eb0ce --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:29:46,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:29:46,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:29:46,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:29:46,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:29:46,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:29:46,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:29:46,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:29:46,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:29:46,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:29:46,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:29:46,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:29:46,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:29:46,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:29:46,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:29:46,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:29:46,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:29:46,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:29:46,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:29:46,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:29:46,565 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:29:46,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:29:46,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:29:46,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:29:46,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:29:46,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:29:46,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:29:46,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:29:46,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:29:46,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:29:46,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:29:46,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:29:46,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:29:46,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:29:46,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:29:46,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:29:46,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:29:46,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:29:46,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:29:46,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:29:46,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:29:46,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:29:46,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:29:46,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:29:46,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:29:46,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:29:46,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:29:46,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:29:46,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:29:46,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:29:46,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:29:46,608 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:29:46,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:29:46,609 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:29:46,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:29:46,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:29:46,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:29:46,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:29:46,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:29:46,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:29:46,610 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:29:46,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:29:46,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:29:46,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:29:46,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:29:46,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:29:46,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:29:46,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:29:46,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:29:46,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:29:46,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:29:46,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:29:46,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:29:46,613 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:29:46,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:29:46,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:29:46,613 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bef365bd29db1ac20249b1e3139137560ac4134ff54f631658e57cc437eb0ce [2022-07-12 09:29:46,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:29:46,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:29:46,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:29:46,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:29:46,831 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:29:46,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c [2022-07-12 09:29:46,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52a1b0f27/7d895e5444134b7db3a840ecc754394d/FLAG5bd46af70 [2022-07-12 09:29:47,264 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:29:47,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.14.cil.c [2022-07-12 09:29:47,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52a1b0f27/7d895e5444134b7db3a840ecc754394d/FLAG5bd46af70 [2022-07-12 09:29:47,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52a1b0f27/7d895e5444134b7db3a840ecc754394d [2022-07-12 09:29:47,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:29:47,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:29:47,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:29:47,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:29:47,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:29:47,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:47,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55673e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47, skipping insertion in model container [2022-07-12 09:29:47,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:47,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:29:47,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:29:47,799 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_1.cil-2+token_ring.14.cil.c[913,926] [2022-07-12 09:29:47,823 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_1.cil-2+token_ring.14.cil.c[5977,5990] [2022-07-12 09:29:47,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:29:47,886 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:29:47,894 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_1.cil-2+token_ring.14.cil.c[913,926] [2022-07-12 09:29:47,902 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_1.cil-2+token_ring.14.cil.c[5977,5990] [2022-07-12 09:29:47,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:29:47,952 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:29:47,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47 WrapperNode [2022-07-12 09:29:47,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:29:47,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:29:47,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:29:47,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:29:47,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:47,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:48,024 INFO L137 Inliner]: procedures = 72, calls = 85, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1058 [2022-07-12 09:29:48,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:29:48,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:29:48,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:29:48,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:29:48,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:48,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:48,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:48,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:48,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:48,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:48,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:48,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:29:48,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:29:48,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:29:48,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:29:48,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (1/1) ... [2022-07-12 09:29:48,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:29:48,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:48,132 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) [2022-07-12 09:29:48,149 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 [2022-07-12 09:29:48,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:29:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:29:48,165 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:29:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-12 09:29:48,165 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-12 09:29:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:29:48,165 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:29:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:29:48,165 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:29:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:29:48,165 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:29:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:29:48,165 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:29:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:29:48,165 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:29:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:29:48,165 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:29:48,166 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:29:48,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:29:48,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:29:48,166 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:29:48,166 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:29:48,166 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:29:48,166 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:29:48,252 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:29:48,254 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:29:48,891 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:29:48,904 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:29:48,904 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-12 09:29:48,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:29:48 BoogieIcfgContainer [2022-07-12 09:29:48,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:29:48,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:29:48,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:29:48,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:29:48,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:29:47" (1/3) ... [2022-07-12 09:29:48,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d90467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:29:48, skipping insertion in model container [2022-07-12 09:29:48,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:29:47" (2/3) ... [2022-07-12 09:29:48,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d90467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:29:48, skipping insertion in model container [2022-07-12 09:29:48,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:29:48" (3/3) ... [2022-07-12 09:29:48,914 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.14.cil.c [2022-07-12 09:29:48,923 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:29:48,923 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:29:48,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:29:48,983 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@613008d8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42f1542 [2022-07-12 09:29:48,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:29:48,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 413 states have (on average 1.6513317191283292) internal successors, (682), 420 states have internal predecessors, (682), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 09:29:49,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 09:29:49,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:49,008 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] [2022-07-12 09:29:49,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:49,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:49,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2140149972, now seen corresponding path program 1 times [2022-07-12 09:29:49,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:49,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471180452] [2022-07-12 09:29:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:49,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 09:29:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:49,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471180452] [2022-07-12 09:29:49,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471180452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:49,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:49,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532334130] [2022-07-12 09:29:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:49,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:49,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:49,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:49,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:49,270 INFO L87 Difference]: Start difference. First operand has 460 states, 413 states have (on average 1.6513317191283292) internal successors, (682), 420 states have internal predecessors, (682), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:49,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:49,555 INFO L93 Difference]: Finished difference Result 964 states and 1568 transitions. [2022-07-12 09:29:49,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:49,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-12 09:29:49,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:49,573 INFO L225 Difference]: With dead ends: 964 [2022-07-12 09:29:49,573 INFO L226 Difference]: Without dead ends: 519 [2022-07-12 09:29:49,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:49,584 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 953 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:49,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1133 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:29:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-07-12 09:29:49,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 513. [2022-07-12 09:29:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 462 states have (on average 1.5346320346320346) internal successors, (709), 467 states have internal predecessors, (709), 38 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-12 09:29:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 787 transitions. [2022-07-12 09:29:49,645 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 787 transitions. Word has length 44 [2022-07-12 09:29:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:49,646 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 787 transitions. [2022-07-12 09:29:49,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 787 transitions. [2022-07-12 09:29:49,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 09:29:49,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:49,653 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] [2022-07-12 09:29:49,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:29:49,653 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1297015323, now seen corresponding path program 1 times [2022-07-12 09:29:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:49,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505697357] [2022-07-12 09:29:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:49,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 09:29:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:49,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:49,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505697357] [2022-07-12 09:29:49,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505697357] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:49,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:49,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:49,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072195703] [2022-07-12 09:29:49,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:49,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:49,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:49,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:49,734 INFO L87 Difference]: Start difference. First operand 513 states and 787 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:50,143 INFO L93 Difference]: Finished difference Result 761 states and 1127 transitions. [2022-07-12 09:29:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:50,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-12 09:29:50,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:50,146 INFO L225 Difference]: With dead ends: 761 [2022-07-12 09:29:50,146 INFO L226 Difference]: Without dead ends: 637 [2022-07-12 09:29:50,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:50,147 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 369 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:50,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1468 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:29:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-07-12 09:29:50,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 580. [2022-07-12 09:29:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 523 states have (on average 1.5162523900573615) internal successors, (793), 528 states have internal predecessors, (793), 41 states have call successors, (41), 15 states have call predecessors, (41), 14 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-07-12 09:29:50,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 877 transitions. [2022-07-12 09:29:50,170 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 877 transitions. Word has length 45 [2022-07-12 09:29:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:50,170 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 877 transitions. [2022-07-12 09:29:50,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 877 transitions. [2022-07-12 09:29:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 09:29:50,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:50,171 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] [2022-07-12 09:29:50,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:29:50,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:50,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:50,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1713594512, now seen corresponding path program 1 times [2022-07-12 09:29:50,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:50,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972262550] [2022-07-12 09:29:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:50,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 09:29:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:50,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972262550] [2022-07-12 09:29:50,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972262550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:50,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:50,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:50,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279148737] [2022-07-12 09:29:50,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:50,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:50,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:50,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:50,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:50,214 INFO L87 Difference]: Start difference. First operand 580 states and 877 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:50,362 INFO L93 Difference]: Finished difference Result 988 states and 1436 transitions. [2022-07-12 09:29:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:50,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-12 09:29:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:50,366 INFO L225 Difference]: With dead ends: 988 [2022-07-12 09:29:50,366 INFO L226 Difference]: Without dead ends: 797 [2022-07-12 09:29:50,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:50,372 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 962 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:50,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1135 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:50,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-07-12 09:29:50,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 745. [2022-07-12 09:29:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 669 states have (on average 1.4693572496263079) internal successors, (983), 677 states have internal predecessors, (983), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (60), 46 states have call predecessors, (60), 48 states have call successors, (60) [2022-07-12 09:29:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1095 transitions. [2022-07-12 09:29:50,404 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1095 transitions. Word has length 45 [2022-07-12 09:29:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:50,405 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1095 transitions. [2022-07-12 09:29:50,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1095 transitions. [2022-07-12 09:29:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 09:29:50,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:50,409 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] [2022-07-12 09:29:50,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:29:50,410 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:50,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:50,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1877488540, now seen corresponding path program 1 times [2022-07-12 09:29:50,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:50,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126072703] [2022-07-12 09:29:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:50,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:29:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 09:29:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:29:50,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:50,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126072703] [2022-07-12 09:29:50,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126072703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:50,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:50,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:50,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993740497] [2022-07-12 09:29:50,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:50,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:50,486 INFO L87 Difference]: Start difference. First operand 745 states and 1095 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:50,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:50,856 INFO L93 Difference]: Finished difference Result 1329 states and 1880 transitions. [2022-07-12 09:29:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:50,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-12 09:29:50,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:50,860 INFO L225 Difference]: With dead ends: 1329 [2022-07-12 09:29:50,861 INFO L226 Difference]: Without dead ends: 973 [2022-07-12 09:29:50,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:50,862 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 353 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:50,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1523 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:29:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-07-12 09:29:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 935. [2022-07-12 09:29:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 835 states have (on average 1.4167664670658682) internal successors, (1183), 845 states have internal predecessors, (1183), 66 states have call successors, (66), 30 states have call predecessors, (66), 32 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2022-07-12 09:29:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1333 transitions. [2022-07-12 09:29:50,888 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1333 transitions. Word has length 62 [2022-07-12 09:29:50,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:50,889 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1333 transitions. [2022-07-12 09:29:50,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1333 transitions. [2022-07-12 09:29:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:29:50,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:50,890 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] [2022-07-12 09:29:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:29:50,891 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1022869652, now seen corresponding path program 1 times [2022-07-12 09:29:50,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:50,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166603150] [2022-07-12 09:29:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:29:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:29:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 09:29:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:50,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166603150] [2022-07-12 09:29:50,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166603150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:50,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:50,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:50,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416992238] [2022-07-12 09:29:50,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:50,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:50,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:50,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:50,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:50,924 INFO L87 Difference]: Start difference. First operand 935 states and 1333 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:29:51,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:51,048 INFO L93 Difference]: Finished difference Result 1588 states and 2186 transitions. [2022-07-12 09:29:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:51,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-12 09:29:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:51,052 INFO L225 Difference]: With dead ends: 1588 [2022-07-12 09:29:51,052 INFO L226 Difference]: Without dead ends: 1134 [2022-07-12 09:29:51,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:51,054 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 949 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:51,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1132 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-07-12 09:29:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1079. [2022-07-12 09:29:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 963 states have (on average 1.3852544132917965) internal successors, (1334), 975 states have internal predecessors, (1334), 74 states have call successors, (74), 36 states have call predecessors, (74), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2022-07-12 09:29:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1506 transitions. [2022-07-12 09:29:51,078 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1506 transitions. Word has length 67 [2022-07-12 09:29:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:51,078 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1506 transitions. [2022-07-12 09:29:51,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:29:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1506 transitions. [2022-07-12 09:29:51,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:29:51,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:51,080 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:29:51,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:29:51,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:51,080 INFO L85 PathProgramCache]: Analyzing trace with hash 604966393, now seen corresponding path program 1 times [2022-07-12 09:29:51,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:51,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639909791] [2022-07-12 09:29:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:51,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:51,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:51,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:29:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:29:51,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:51,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639909791] [2022-07-12 09:29:51,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639909791] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:51,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266447880] [2022-07-12 09:29:51,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:51,181 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) [2022-07-12 09:29:51,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:29:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:51,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 09:29:51,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:51,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:29:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:29:51,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266447880] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:51,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 09:29:51,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-12 09:29:51,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141005944] [2022-07-12 09:29:51,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:51,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:51,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:29:51,456 INFO L87 Difference]: Start difference. First operand 1079 states and 1506 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:51,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:51,578 INFO L93 Difference]: Finished difference Result 1135 states and 1574 transitions. [2022-07-12 09:29:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 09:29:51,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-12 09:29:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:51,591 INFO L225 Difference]: With dead ends: 1135 [2022-07-12 09:29:51,591 INFO L226 Difference]: Without dead ends: 1132 [2022-07-12 09:29:51,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:29:51,592 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1271 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:51,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 788 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-07-12 09:29:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1078. [2022-07-12 09:29:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 963 states have (on average 1.3831775700934579) internal successors, (1332), 974 states have internal predecessors, (1332), 73 states have call successors, (73), 36 states have call predecessors, (73), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2022-07-12 09:29:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1503 transitions. [2022-07-12 09:29:51,622 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1503 transitions. Word has length 68 [2022-07-12 09:29:51,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:51,622 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1503 transitions. [2022-07-12 09:29:51,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1503 transitions. [2022-07-12 09:29:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 09:29:51,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:51,624 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:29:51,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:51,855 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,SelfDestructingSolverStorable5 [2022-07-12 09:29:51,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1572679607, now seen corresponding path program 1 times [2022-07-12 09:29:51,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:51,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764048933] [2022-07-12 09:29:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:51,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:51,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:29:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:29:52,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:52,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764048933] [2022-07-12 09:29:52,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764048933] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:52,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057608532] [2022-07-12 09:29:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:52,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:52,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:52,032 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) [2022-07-12 09:29:52,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:29:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:52,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:29:52,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:52,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:29:52,538 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:29:52,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057608532] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:29:52,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:29:52,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-12 09:29:52,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203133720] [2022-07-12 09:29:52,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:29:52,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 09:29:52,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:52,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 09:29:52,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:52,540 INFO L87 Difference]: Start difference. First operand 1078 states and 1503 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 09:29:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:53,772 INFO L93 Difference]: Finished difference Result 2778 states and 3723 transitions. [2022-07-12 09:29:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-12 09:29:53,773 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-12 09:29:53,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:53,780 INFO L225 Difference]: With dead ends: 2778 [2022-07-12 09:29:53,780 INFO L226 Difference]: Without dead ends: 2234 [2022-07-12 09:29:53,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 09:29:53,782 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 1316 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:53,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 3889 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:29:53,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2022-07-12 09:29:53,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1467. [2022-07-12 09:29:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 1313 states have (on average 1.345011424219345) internal successors, (1766), 1332 states have internal predecessors, (1766), 93 states have call successors, (93), 50 states have call predecessors, (93), 59 states have return successors, (132), 85 states have call predecessors, (132), 90 states have call successors, (132) [2022-07-12 09:29:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1991 transitions. [2022-07-12 09:29:53,862 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1991 transitions. Word has length 69 [2022-07-12 09:29:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:53,863 INFO L495 AbstractCegarLoop]: Abstraction has 1467 states and 1991 transitions. [2022-07-12 09:29:53,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 09:29:53,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1991 transitions. [2022-07-12 09:29:53,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-12 09:29:53,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:53,865 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 09:29:53,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:54,083 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,SelfDestructingSolverStorable6 [2022-07-12 09:29:54,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:54,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:54,084 INFO L85 PathProgramCache]: Analyzing trace with hash 498798882, now seen corresponding path program 1 times [2022-07-12 09:29:54,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:54,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989203341] [2022-07-12 09:29:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:54,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 09:29:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 09:29:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 09:29:54,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:54,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989203341] [2022-07-12 09:29:54,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989203341] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:54,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056185560] [2022-07-12 09:29:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:54,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:54,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:54,170 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) [2022-07-12 09:29:54,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:29:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:29:54,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:54,310 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:29:54,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:29:54,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056185560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:54,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:29:54,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 09:29:54,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214451753] [2022-07-12 09:29:54,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:54,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:29:54,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:54,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:29:54,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:54,311 INFO L87 Difference]: Start difference. First operand 1467 states and 1991 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-12 09:29:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:54,351 INFO L93 Difference]: Finished difference Result 2190 states and 2929 transitions. [2022-07-12 09:29:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:29:54,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-12 09:29:54,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:54,355 INFO L225 Difference]: With dead ends: 2190 [2022-07-12 09:29:54,355 INFO L226 Difference]: Without dead ends: 1345 [2022-07-12 09:29:54,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:54,357 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 656 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:54,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 802 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:29:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2022-07-12 09:29:54,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1330. [2022-07-12 09:29:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1192 states have (on average 1.348993288590604) internal successors, (1608), 1210 states have internal predecessors, (1608), 85 states have call successors, (85), 44 states have call predecessors, (85), 51 states have return successors, (118), 76 states have call predecessors, (118), 82 states have call successors, (118) [2022-07-12 09:29:54,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1811 transitions. [2022-07-12 09:29:54,397 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1811 transitions. Word has length 88 [2022-07-12 09:29:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:54,397 INFO L495 AbstractCegarLoop]: Abstraction has 1330 states and 1811 transitions. [2022-07-12 09:29:54,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-12 09:29:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1811 transitions. [2022-07-12 09:29:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 09:29:54,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:54,400 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:54,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:54,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:54,619 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:54,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:54,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1813831709, now seen corresponding path program 1 times [2022-07-12 09:29:54,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:54,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358383391] [2022-07-12 09:29:54,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:54,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 09:29:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 09:29:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:29:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,735 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 09:29:54,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:54,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358383391] [2022-07-12 09:29:54,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358383391] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:54,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008485893] [2022-07-12 09:29:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:54,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:54,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:54,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:29:54,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:29:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:54,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:29:54,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:29:54,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:29:54,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008485893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:54,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:29:54,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 09:29:54,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714235612] [2022-07-12 09:29:54,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:54,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:29:54,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:54,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:29:54,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:54,896 INFO L87 Difference]: Start difference. First operand 1330 states and 1811 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 09:29:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:54,930 INFO L93 Difference]: Finished difference Result 1709 states and 2279 transitions. [2022-07-12 09:29:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:29:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-12 09:29:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:54,933 INFO L225 Difference]: With dead ends: 1709 [2022-07-12 09:29:54,933 INFO L226 Difference]: Without dead ends: 383 [2022-07-12 09:29:54,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:54,936 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 62 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:54,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1412 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:29:54,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-07-12 09:29:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2022-07-12 09:29:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 348 states have (on average 1.5804597701149425) internal successors, (550), 350 states have internal predecessors, (550), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 09:29:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 604 transitions. [2022-07-12 09:29:54,946 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 604 transitions. Word has length 103 [2022-07-12 09:29:54,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:54,946 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 604 transitions. [2022-07-12 09:29:54,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 09:29:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 604 transitions. [2022-07-12 09:29:54,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:54,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:54,950 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] [2022-07-12 09:29:54,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:55,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:55,179 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:55,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash -659936082, now seen corresponding path program 1 times [2022-07-12 09:29:55,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:55,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356026395] [2022-07-12 09:29:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:55,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:55,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:55,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:55,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356026395] [2022-07-12 09:29:55,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356026395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:55,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:55,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:29:55,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689486414] [2022-07-12 09:29:55,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:55,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:29:55,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:55,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:29:55,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:55,290 INFO L87 Difference]: Start difference. First operand 383 states and 604 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) [2022-07-12 09:29:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:56,375 INFO L93 Difference]: Finished difference Result 901 states and 1444 transitions. [2022-07-12 09:29:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:29:56,376 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 [2022-07-12 09:29:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:56,378 INFO L225 Difference]: With dead ends: 901 [2022-07-12 09:29:56,378 INFO L226 Difference]: Without dead ends: 525 [2022-07-12 09:29:56,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:29:56,380 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 1042 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:56,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1065 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:29:56,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-07-12 09:29:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 383. [2022-07-12 09:29:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 348 states have (on average 1.5775862068965518) internal successors, (549), 350 states have internal predecessors, (549), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 09:29:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 603 transitions. [2022-07-12 09:29:56,395 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 603 transitions. Word has length 179 [2022-07-12 09:29:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:56,395 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 603 transitions. [2022-07-12 09:29:56,395 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) [2022-07-12 09:29:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 603 transitions. [2022-07-12 09:29:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:56,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:56,396 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] [2022-07-12 09:29:56,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:29:56,397 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:56,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1308528852, now seen corresponding path program 1 times [2022-07-12 09:29:56,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:56,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846238977] [2022-07-12 09:29:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:56,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:56,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:56,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:56,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:56,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:56,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846238977] [2022-07-12 09:29:56,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846238977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:56,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:56,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:29:56,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740020157] [2022-07-12 09:29:56,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:56,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:29:56,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:56,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:29:56,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:56,483 INFO L87 Difference]: Start difference. First operand 383 states and 603 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) [2022-07-12 09:29:57,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:57,577 INFO L93 Difference]: Finished difference Result 893 states and 1427 transitions. [2022-07-12 09:29:57,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:29:57,578 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 [2022-07-12 09:29:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:57,581 INFO L225 Difference]: With dead ends: 893 [2022-07-12 09:29:57,581 INFO L226 Difference]: Without dead ends: 525 [2022-07-12 09:29:57,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:29:57,582 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 1033 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:57,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1063 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:29:57,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-07-12 09:29:57,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 383. [2022-07-12 09:29:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 348 states have (on average 1.5747126436781609) internal successors, (548), 350 states have internal predecessors, (548), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 09:29:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 602 transitions. [2022-07-12 09:29:57,598 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 602 transitions. Word has length 179 [2022-07-12 09:29:57,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:57,599 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 602 transitions. [2022-07-12 09:29:57,599 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) [2022-07-12 09:29:57,599 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 602 transitions. [2022-07-12 09:29:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:57,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:57,601 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] [2022-07-12 09:29:57,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:29:57,601 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:57,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1807085654, now seen corresponding path program 1 times [2022-07-12 09:29:57,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:57,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441966074] [2022-07-12 09:29:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:57,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:57,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:57,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441966074] [2022-07-12 09:29:57,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441966074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:57,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:57,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:29:57,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812742046] [2022-07-12 09:29:57,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:57,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:29:57,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:29:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:29:57,702 INFO L87 Difference]: Start difference. First operand 383 states and 602 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) [2022-07-12 09:29:59,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:59,966 INFO L93 Difference]: Finished difference Result 1409 states and 2265 transitions. [2022-07-12 09:29:59,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:29:59,967 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 [2022-07-12 09:29:59,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:59,970 INFO L225 Difference]: With dead ends: 1409 [2022-07-12 09:29:59,970 INFO L226 Difference]: Without dead ends: 1047 [2022-07-12 09:29:59,971 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 [2022-07-12 09:29:59,972 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1564 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:59,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 1683 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 09:29:59,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-07-12 09:30:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 762. [2022-07-12 09:30:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 699 states have (on average 1.5879828326180256) internal successors, (1110), 702 states have internal predecessors, (1110), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-12 09:30:00,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1209 transitions. [2022-07-12 09:30:00,009 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1209 transitions. Word has length 179 [2022-07-12 09:30:00,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:00,010 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 1209 transitions. [2022-07-12 09:30:00,010 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) [2022-07-12 09:30:00,010 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1209 transitions. [2022-07-12 09:30:00,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:00,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:00,011 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] [2022-07-12 09:30:00,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:30:00,012 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:00,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:00,012 INFO L85 PathProgramCache]: Analyzing trace with hash -826130840, now seen corresponding path program 1 times [2022-07-12 09:30:00,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:00,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076713521] [2022-07-12 09:30:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:00,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:00,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:00,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:00,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:00,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076713521] [2022-07-12 09:30:00,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076713521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:00,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:00,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:00,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216064094] [2022-07-12 09:30:00,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:00,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:00,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:00,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:00,132 INFO L87 Difference]: Start difference. First operand 762 states and 1209 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) [2022-07-12 09:30:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:02,780 INFO L93 Difference]: Finished difference Result 2328 states and 3751 transitions. [2022-07-12 09:30:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:02,781 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 [2022-07-12 09:30:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:02,785 INFO L225 Difference]: With dead ends: 2328 [2022-07-12 09:30:02,786 INFO L226 Difference]: Without dead ends: 1587 [2022-07-12 09:30:02,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:02,788 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 1591 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:02,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 2945 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3144 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 09:30:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2022-07-12 09:30:02,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1114. [2022-07-12 09:30:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1023 states have (on average 1.5816226783968719) internal successors, (1618), 1027 states have internal predecessors, (1618), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-12 09:30:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1761 transitions. [2022-07-12 09:30:02,842 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1761 transitions. Word has length 179 [2022-07-12 09:30:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:02,842 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 1761 transitions. [2022-07-12 09:30:02,842 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) [2022-07-12 09:30:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1761 transitions. [2022-07-12 09:30:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:02,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:02,844 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] [2022-07-12 09:30:02,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:30:02,844 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1699364842, now seen corresponding path program 1 times [2022-07-12 09:30:02,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:02,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823486887] [2022-07-12 09:30:02,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:02,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:02,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:02,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:02,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823486887] [2022-07-12 09:30:02,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823486887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:02,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:02,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:02,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809299047] [2022-07-12 09:30:02,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:02,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:02,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:02,956 INFO L87 Difference]: Start difference. First operand 1114 states and 1761 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) [2022-07-12 09:30:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:05,672 INFO L93 Difference]: Finished difference Result 3683 states and 5923 transitions. [2022-07-12 09:30:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:05,673 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 [2022-07-12 09:30:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:05,682 INFO L225 Difference]: With dead ends: 3683 [2022-07-12 09:30:05,682 INFO L226 Difference]: Without dead ends: 2590 [2022-07-12 09:30:05,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:05,685 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 1588 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 3146 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:05,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2937 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3146 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 09:30:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2022-07-12 09:30:05,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 1819. [2022-07-12 09:30:05,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1672 states have (on average 1.575956937799043) internal successors, (2635), 1678 states have internal predecessors, (2635), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-12 09:30:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2870 transitions. [2022-07-12 09:30:05,803 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2870 transitions. Word has length 179 [2022-07-12 09:30:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:05,803 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 2870 transitions. [2022-07-12 09:30:05,804 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) [2022-07-12 09:30:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2870 transitions. [2022-07-12 09:30:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:05,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:05,805 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] [2022-07-12 09:30:05,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:30:05,806 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:05,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1088095784, now seen corresponding path program 1 times [2022-07-12 09:30:05,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:05,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292501670] [2022-07-12 09:30:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:05,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:05,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:05,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:05,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:05,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292501670] [2022-07-12 09:30:05,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292501670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:05,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:05,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:05,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013875489] [2022-07-12 09:30:05,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:05,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:05,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:05,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:05,947 INFO L87 Difference]: Start difference. First operand 1819 states and 2870 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) [2022-07-12 09:30:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:07,290 INFO L93 Difference]: Finished difference Result 4376 states and 7023 transitions. [2022-07-12 09:30:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:07,291 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 [2022-07-12 09:30:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:07,299 INFO L225 Difference]: With dead ends: 4376 [2022-07-12 09:30:07,299 INFO L226 Difference]: Without dead ends: 2578 [2022-07-12 09:30:07,303 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 [2022-07-12 09:30:07,303 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1295 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:07,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1406 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:30:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2022-07-12 09:30:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1819. [2022-07-12 09:30:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1672 states have (on average 1.5729665071770336) internal successors, (2630), 1678 states have internal predecessors, (2630), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-12 09:30:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2865 transitions. [2022-07-12 09:30:07,422 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2865 transitions. Word has length 179 [2022-07-12 09:30:07,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:07,423 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 2865 transitions. [2022-07-12 09:30:07,423 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) [2022-07-12 09:30:07,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2865 transitions. [2022-07-12 09:30:07,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:07,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:07,425 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] [2022-07-12 09:30:07,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:30:07,425 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:07,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:07,425 INFO L85 PathProgramCache]: Analyzing trace with hash -317095894, now seen corresponding path program 1 times [2022-07-12 09:30:07,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:07,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921210545] [2022-07-12 09:30:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:07,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:07,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:07,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:07,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921210545] [2022-07-12 09:30:07,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921210545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:07,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:07,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:07,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881691457] [2022-07-12 09:30:07,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:07,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:07,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:07,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:07,548 INFO L87 Difference]: Start difference. First operand 1819 states and 2865 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) [2022-07-12 09:30:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:08,618 INFO L93 Difference]: Finished difference Result 4370 states and 6997 transitions. [2022-07-12 09:30:08,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:08,618 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 [2022-07-12 09:30:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:08,626 INFO L225 Difference]: With dead ends: 4370 [2022-07-12 09:30:08,626 INFO L226 Difference]: Without dead ends: 2572 [2022-07-12 09:30:08,629 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 [2022-07-12 09:30:08,630 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 1296 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:08,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 1400 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:30:08,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2022-07-12 09:30:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1819. [2022-07-12 09:30:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1672 states have (on average 1.569976076555024) internal successors, (2625), 1678 states have internal predecessors, (2625), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-12 09:30:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2860 transitions. [2022-07-12 09:30:08,766 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2860 transitions. Word has length 179 [2022-07-12 09:30:08,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:08,766 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 2860 transitions. [2022-07-12 09:30:08,766 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) [2022-07-12 09:30:08,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2860 transitions. [2022-07-12 09:30:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:08,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:08,784 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] [2022-07-12 09:30:08,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:30:08,784 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:08,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:08,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1577237992, now seen corresponding path program 1 times [2022-07-12 09:30:08,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:08,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398373392] [2022-07-12 09:30:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:08,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:08,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:08,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:08,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:08,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398373392] [2022-07-12 09:30:08,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398373392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:08,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:08,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:08,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043392388] [2022-07-12 09:30:08,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:08,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:08,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:08,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:08,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:08,928 INFO L87 Difference]: Start difference. First operand 1819 states and 2860 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) [2022-07-12 09:30:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:10,132 INFO L93 Difference]: Finished difference Result 4358 states and 6959 transitions. [2022-07-12 09:30:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:10,133 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 [2022-07-12 09:30:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:10,139 INFO L225 Difference]: With dead ends: 4358 [2022-07-12 09:30:10,140 INFO L226 Difference]: Without dead ends: 2560 [2022-07-12 09:30:10,169 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 [2022-07-12 09:30:10,169 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 1125 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:10,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 1593 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:30:10,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-07-12 09:30:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1819. [2022-07-12 09:30:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1672 states have (on average 1.5669856459330143) internal successors, (2620), 1678 states have internal predecessors, (2620), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-12 09:30:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 2855 transitions. [2022-07-12 09:30:10,308 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 2855 transitions. Word has length 179 [2022-07-12 09:30:10,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:10,308 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 2855 transitions. [2022-07-12 09:30:10,308 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) [2022-07-12 09:30:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 2855 transitions. [2022-07-12 09:30:10,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:10,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:10,310 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] [2022-07-12 09:30:10,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:30:10,310 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:10,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash 654070566, now seen corresponding path program 1 times [2022-07-12 09:30:10,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:10,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472981766] [2022-07-12 09:30:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:10,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:10,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:10,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472981766] [2022-07-12 09:30:10,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472981766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:10,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:10,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:10,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481923182] [2022-07-12 09:30:10,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:10,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:10,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:10,434 INFO L87 Difference]: Start difference. First operand 1819 states and 2855 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) [2022-07-12 09:30:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:13,193 INFO L93 Difference]: Finished difference Result 6263 states and 9956 transitions. [2022-07-12 09:30:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:13,194 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 [2022-07-12 09:30:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:13,206 INFO L225 Difference]: With dead ends: 6263 [2022-07-12 09:30:13,206 INFO L226 Difference]: Without dead ends: 4465 [2022-07-12 09:30:13,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:13,211 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 1563 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 3068 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:13,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 2909 Invalid, 3154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3068 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 09:30:13,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4465 states. [2022-07-12 09:30:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4465 to 3248. [2022-07-12 09:30:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 2989 states have (on average 1.5617263298762127) internal successors, (4668), 2999 states have internal predecessors, (4668), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-12 09:30:13,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 5093 transitions. [2022-07-12 09:30:13,430 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 5093 transitions. Word has length 179 [2022-07-12 09:30:13,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:13,430 INFO L495 AbstractCegarLoop]: Abstraction has 3248 states and 5093 transitions. [2022-07-12 09:30:13,430 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) [2022-07-12 09:30:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 5093 transitions. [2022-07-12 09:30:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:13,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:13,432 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] [2022-07-12 09:30:13,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:30:13,432 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:13,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1039932968, now seen corresponding path program 1 times [2022-07-12 09:30:13,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:13,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932635119] [2022-07-12 09:30:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:13,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:13,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:13,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:13,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:13,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:13,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932635119] [2022-07-12 09:30:13,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932635119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:13,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:13,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:13,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9324672] [2022-07-12 09:30:13,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:13,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:13,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:13,600 INFO L87 Difference]: Start difference. First operand 3248 states and 5093 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) [2022-07-12 09:30:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:14,896 INFO L93 Difference]: Finished difference Result 7712 states and 12262 transitions. [2022-07-12 09:30:14,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:14,897 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 [2022-07-12 09:30:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:14,925 INFO L225 Difference]: With dead ends: 7712 [2022-07-12 09:30:14,925 INFO L226 Difference]: Without dead ends: 4485 [2022-07-12 09:30:14,930 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 [2022-07-12 09:30:14,930 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1361 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:14,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 1351 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:30:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4485 states. [2022-07-12 09:30:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4485 to 3248. [2022-07-12 09:30:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3248 states, 2989 states have (on average 1.5587152893944463) internal successors, (4659), 2999 states have internal predecessors, (4659), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-12 09:30:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 5084 transitions. [2022-07-12 09:30:15,224 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 5084 transitions. Word has length 179 [2022-07-12 09:30:15,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:15,224 INFO L495 AbstractCegarLoop]: Abstraction has 3248 states and 5084 transitions. [2022-07-12 09:30:15,225 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) [2022-07-12 09:30:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 5084 transitions. [2022-07-12 09:30:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:15,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:15,226 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] [2022-07-12 09:30:15,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:30:15,227 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:15,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:15,227 INFO L85 PathProgramCache]: Analyzing trace with hash 775285478, now seen corresponding path program 1 times [2022-07-12 09:30:15,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:15,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530510502] [2022-07-12 09:30:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:15,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:15,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:15,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530510502] [2022-07-12 09:30:15,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530510502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:15,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:15,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:15,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226786857] [2022-07-12 09:30:15,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:15,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:15,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:15,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:15,321 INFO L87 Difference]: Start difference. First operand 3248 states and 5084 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) [2022-07-12 09:30:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:18,076 INFO L93 Difference]: Finished difference Result 11464 states and 18144 transitions. [2022-07-12 09:30:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:18,076 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 [2022-07-12 09:30:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:18,098 INFO L225 Difference]: With dead ends: 11464 [2022-07-12 09:30:18,099 INFO L226 Difference]: Without dead ends: 8237 [2022-07-12 09:30:18,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:30:18,107 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 1555 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:18,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 2898 Invalid, 3127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3041 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:30:18,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8237 states. [2022-07-12 09:30:18,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8237 to 6114. [2022-07-12 09:30:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 5631 states have (on average 1.554075652637187) internal successors, (8751), 5649 states have internal predecessors, (8751), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-12 09:30:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 9574 transitions. [2022-07-12 09:30:18,590 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 9574 transitions. Word has length 179 [2022-07-12 09:30:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:18,590 INFO L495 AbstractCegarLoop]: Abstraction has 6114 states and 9574 transitions. [2022-07-12 09:30:18,591 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) [2022-07-12 09:30:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 9574 transitions. [2022-07-12 09:30:18,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:18,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:18,593 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] [2022-07-12 09:30:18,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:30:18,594 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:18,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:18,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1588556184, now seen corresponding path program 1 times [2022-07-12 09:30:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:18,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792034480] [2022-07-12 09:30:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:18,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:18,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:18,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:18,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792034480] [2022-07-12 09:30:18,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792034480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:18,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:18,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:18,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499008056] [2022-07-12 09:30:18,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:18,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:18,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:18,727 INFO L87 Difference]: Start difference. First operand 6114 states and 9574 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) [2022-07-12 09:30:20,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:20,524 INFO L93 Difference]: Finished difference Result 14408 states and 22861 transitions. [2022-07-12 09:30:20,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:20,525 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 [2022-07-12 09:30:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:20,541 INFO L225 Difference]: With dead ends: 14408 [2022-07-12 09:30:20,541 INFO L226 Difference]: Without dead ends: 8315 [2022-07-12 09:30:20,551 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 [2022-07-12 09:30:20,551 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1123 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:20,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 1579 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:30:20,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8315 states. [2022-07-12 09:30:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8315 to 6114. [2022-07-12 09:30:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 5631 states have (on average 1.5510566506837151) internal successors, (8734), 5649 states have internal predecessors, (8734), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-12 09:30:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 9557 transitions. [2022-07-12 09:30:21,098 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 9557 transitions. Word has length 179 [2022-07-12 09:30:21,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:21,098 INFO L495 AbstractCegarLoop]: Abstraction has 6114 states and 9557 transitions. [2022-07-12 09:30:21,098 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) [2022-07-12 09:30:21,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 9557 transitions. [2022-07-12 09:30:21,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:21,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:21,101 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] [2022-07-12 09:30:21,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:30:21,102 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:21,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:21,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1383232166, now seen corresponding path program 1 times [2022-07-12 09:30:21,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:21,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823547492] [2022-07-12 09:30:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:21,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:21,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:21,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:21,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:21,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823547492] [2022-07-12 09:30:21,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823547492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:21,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:21,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:21,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788139296] [2022-07-12 09:30:21,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:21,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:21,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:21,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:21,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:21,261 INFO L87 Difference]: Start difference. First operand 6114 states and 9557 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) [2022-07-12 09:30:23,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:23,306 INFO L93 Difference]: Finished difference Result 14390 states and 22774 transitions. [2022-07-12 09:30:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:30:23,307 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 [2022-07-12 09:30:23,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:23,325 INFO L225 Difference]: With dead ends: 14390 [2022-07-12 09:30:23,325 INFO L226 Difference]: Without dead ends: 8297 [2022-07-12 09:30:23,336 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 [2022-07-12 09:30:23,337 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1121 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:23,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1575 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:30:23,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2022-07-12 09:30:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 6114. [2022-07-12 09:30:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 5631 states have (on average 1.5480376487302432) internal successors, (8717), 5649 states have internal predecessors, (8717), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-12 09:30:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 9540 transitions. [2022-07-12 09:30:23,881 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 9540 transitions. Word has length 179 [2022-07-12 09:30:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:23,881 INFO L495 AbstractCegarLoop]: Abstraction has 6114 states and 9540 transitions. [2022-07-12 09:30:23,881 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) [2022-07-12 09:30:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 9540 transitions. [2022-07-12 09:30:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:23,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:23,884 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] [2022-07-12 09:30:23,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:30:23,884 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1014755672, now seen corresponding path program 1 times [2022-07-12 09:30:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:23,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697738652] [2022-07-12 09:30:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:23,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:23,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697738652] [2022-07-12 09:30:23,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697738652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:23,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:23,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:23,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035755261] [2022-07-12 09:30:23,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:23,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:23,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:23,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:23,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:23,991 INFO L87 Difference]: Start difference. First operand 6114 states and 9540 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) [2022-07-12 09:30:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:28,091 INFO L93 Difference]: Finished difference Result 21844 states and 34408 transitions. [2022-07-12 09:30:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:30:28,091 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 [2022-07-12 09:30:28,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:28,124 INFO L225 Difference]: With dead ends: 21844 [2022-07-12 09:30:28,124 INFO L226 Difference]: Without dead ends: 15751 [2022-07-12 09:30:28,135 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 [2022-07-12 09:30:28,136 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 1543 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 2992 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:28,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 2879 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2992 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 09:30:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15751 states. [2022-07-12 09:30:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15751 to 11893. [2022-07-12 09:30:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11893 states, 10962 states have (on average 1.5437876299945266) internal successors, (16923), 10996 states have internal predecessors, (16923), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-12 09:30:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11893 states to 11893 states and 18596 transitions. [2022-07-12 09:30:29,197 INFO L78 Accepts]: Start accepts. Automaton has 11893 states and 18596 transitions. Word has length 179 [2022-07-12 09:30:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:29,197 INFO L495 AbstractCegarLoop]: Abstraction has 11893 states and 18596 transitions. [2022-07-12 09:30:29,197 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) [2022-07-12 09:30:29,198 INFO L276 IsEmpty]: Start isEmpty. Operand 11893 states and 18596 transitions. [2022-07-12 09:30:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:29,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:29,202 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] [2022-07-12 09:30:29,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:30:29,202 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:29,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash -676468122, now seen corresponding path program 1 times [2022-07-12 09:30:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:29,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613186264] [2022-07-12 09:30:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:29,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:29,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:29,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:29,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:29,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:29,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613186264] [2022-07-12 09:30:29,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613186264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:29,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:29,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:29,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708731327] [2022-07-12 09:30:29,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:29,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:29,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:29,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:29,299 INFO L87 Difference]: Start difference. First operand 11893 states and 18596 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) [2022-07-12 09:30:36,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:36,944 INFO L93 Difference]: Finished difference Result 47923 states and 75512 transitions. [2022-07-12 09:30:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:30:36,945 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 [2022-07-12 09:30:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:37,090 INFO L225 Difference]: With dead ends: 47923 [2022-07-12 09:30:37,090 INFO L226 Difference]: Without dead ends: 36051 [2022-07-12 09:30:37,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:30:37,127 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 1650 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 3515 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 3606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:37,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 3044 Invalid, 3606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3515 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:30:37,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36051 states. [2022-07-12 09:30:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36051 to 23159. [2022-07-12 09:30:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23159 states, 21364 states have (on average 1.5412375959558136) internal successors, (32927), 21430 states have internal predecessors, (32927), 1340 states have call successors, (1340), 391 states have call predecessors, (1340), 454 states have return successors, (2131), 1401 states have call predecessors, (2131), 1338 states have call successors, (2131) [2022-07-12 09:30:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23159 states to 23159 states and 36398 transitions. [2022-07-12 09:30:39,457 INFO L78 Accepts]: Start accepts. Automaton has 23159 states and 36398 transitions. Word has length 179 [2022-07-12 09:30:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:39,457 INFO L495 AbstractCegarLoop]: Abstraction has 23159 states and 36398 transitions. [2022-07-12 09:30:39,457 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) [2022-07-12 09:30:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 23159 states and 36398 transitions. [2022-07-12 09:30:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:39,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:39,465 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] [2022-07-12 09:30:39,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:30:39,465 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:39,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1216897628, now seen corresponding path program 1 times [2022-07-12 09:30:39,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:39,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052660244] [2022-07-12 09:30:39,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:39,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:39,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:39,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:39,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:39,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:39,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:39,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052660244] [2022-07-12 09:30:39,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052660244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:39,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:39,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:39,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950719318] [2022-07-12 09:30:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:39,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:39,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:39,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:39,579 INFO L87 Difference]: Start difference. First operand 23159 states and 36398 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) [2022-07-12 09:30:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:52,055 INFO L93 Difference]: Finished difference Result 92979 states and 147216 transitions. [2022-07-12 09:30:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:30:52,055 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 [2022-07-12 09:30:52,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:52,274 INFO L225 Difference]: With dead ends: 92979 [2022-07-12 09:30:52,274 INFO L226 Difference]: Without dead ends: 69841 [2022-07-12 09:30:52,324 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 [2022-07-12 09:30:52,324 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1945 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:52,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 2855 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:30:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69841 states. [2022-07-12 09:30:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69841 to 45912. [2022-07-12 09:30:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45912 states, 42421 states have (on average 1.5419014167511373) internal successors, (65409), 42551 states have internal predecessors, (65409), 2588 states have call successors, (2588), 775 states have call predecessors, (2588), 902 states have return successors, (4901), 2713 states have call predecessors, (4901), 2586 states have call successors, (4901) [2022-07-12 09:30:57,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45912 states to 45912 states and 72898 transitions. [2022-07-12 09:30:57,357 INFO L78 Accepts]: Start accepts. Automaton has 45912 states and 72898 transitions. Word has length 179 [2022-07-12 09:30:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:57,357 INFO L495 AbstractCegarLoop]: Abstraction has 45912 states and 72898 transitions. [2022-07-12 09:30:57,357 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) [2022-07-12 09:30:57,357 INFO L276 IsEmpty]: Start isEmpty. Operand 45912 states and 72898 transitions. [2022-07-12 09:30:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:57,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:57,371 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] [2022-07-12 09:30:57,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:30:57,372 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:57,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:57,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1372878170, now seen corresponding path program 1 times [2022-07-12 09:30:57,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:57,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233613356] [2022-07-12 09:30:57,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:57,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:57,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:57,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:57,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233613356] [2022-07-12 09:30:57,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233613356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:57,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:57,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:57,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215602217] [2022-07-12 09:30:57,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:57,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:57,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:57,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:57,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:57,467 INFO L87 Difference]: Start difference. First operand 45912 states and 72898 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) [2022-07-12 09:31:21,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:21,168 INFO L93 Difference]: Finished difference Result 182610 states and 291958 transitions. [2022-07-12 09:31:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:31:21,169 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 [2022-07-12 09:31:21,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:21,941 INFO L225 Difference]: With dead ends: 182610 [2022-07-12 09:31:21,941 INFO L226 Difference]: Without dead ends: 136719 [2022-07-12 09:31:22,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:31:22,041 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 1718 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:22,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 2124 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 3136 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:31:22,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136719 states. [2022-07-12 09:31:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136719 to 91353. [2022-07-12 09:31:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91353 states, 84534 states have (on average 1.542988619963565) internal successors, (130435), 84792 states have internal predecessors, (130435), 5020 states have call successors, (5020), 1543 states have call predecessors, (5020), 1798 states have return successors, (11835), 5273 states have call predecessors, (11835), 5018 states have call successors, (11835) [2022-07-12 09:31:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91353 states to 91353 states and 147290 transitions. [2022-07-12 09:31:32,720 INFO L78 Accepts]: Start accepts. Automaton has 91353 states and 147290 transitions. Word has length 179 [2022-07-12 09:31:32,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:32,720 INFO L495 AbstractCegarLoop]: Abstraction has 91353 states and 147290 transitions. [2022-07-12 09:31:32,720 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) [2022-07-12 09:31:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 91353 states and 147290 transitions. [2022-07-12 09:31:32,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:31:32,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:32,748 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] [2022-07-12 09:31:32,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:31:32,748 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:32,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash -962267804, now seen corresponding path program 1 times [2022-07-12 09:31:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:32,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605719381] [2022-07-12 09:31:32,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:32,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:31:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:31:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:31:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:31:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:32,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:32,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605719381] [2022-07-12 09:31:32,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605719381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:32,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:32,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:32,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409531845] [2022-07-12 09:31:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:32,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:32,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:32,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:32,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:32,866 INFO L87 Difference]: Start difference. First operand 91353 states and 147290 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)