./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.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_2.cil-1+token_ring.04.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:31:27,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:31:27,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:31:27,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:31:27,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:31:27,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:31:27,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:31:27,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:31:27,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:31:27,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:31:27,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:31:27,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:31:27,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:31:27,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:31:27,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:31:27,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:31:27,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:31:27,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:31:27,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:31:27,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:31:27,787 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:31:27,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:31:27,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:31:27,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:31:27,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:31:27,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:31:27,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:31:27,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:31:27,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:31:27,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:31:27,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:31:27,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:31:27,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:31:27,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:31:27,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:31:27,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:31:27,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:31:27,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:31:27,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:31:27,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:31:27,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:31:27,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:31:27,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:31:27,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:31:27,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:31:27,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:31:27,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:31:27,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:31:27,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:31:27,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:31:27,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:31:27,827 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:31:27,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:31:27,827 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:31:27,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:31:27,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:31:27,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:31:27,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:31:27,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:31:27,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:31:27,828 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:31:27,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:31:27,828 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:31:27,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:31:27,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:31:27,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:31:27,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:31:27,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:31:27,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:31:27,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:31:27,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:31:27,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:31:27,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:31:27,831 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:31:27,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:31:27,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:31:27,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a61ec0d9e8ff01aa8900ac2d4a87b40f68db963fb1a53c6fbb2c11c91e3dd345 [2022-07-12 09:31:27,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:31:28,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:31:28,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:31:28,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:31:28,009 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:31:28,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-07-12 09:31:28,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdeac4a25/6edc31d4ca94401d9bd8f35cc274c09b/FLAG4a6d7051f [2022-07-12 09:31:28,424 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:31:28,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-07-12 09:31:28,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdeac4a25/6edc31d4ca94401d9bd8f35cc274c09b/FLAG4a6d7051f [2022-07-12 09:31:28,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdeac4a25/6edc31d4ca94401d9bd8f35cc274c09b [2022-07-12 09:31:28,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:31:28,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:31:28,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:31:28,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:31:28,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:31:28,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@711fd60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28, skipping insertion in model container [2022-07-12 09:31:28,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:31:28,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:31:28,619 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2022-07-12 09:31:28,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2022-07-12 09:31:28,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:31:28,699 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:31:28,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[914,927] [2022-07-12 09:31:28,732 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-2.c[7115,7128] [2022-07-12 09:31:28,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:31:28,781 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:31:28,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28 WrapperNode [2022-07-12 09:31:28,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:31:28,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:31:28,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:31:28,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:31:28,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,822 INFO L137 Inliner]: procedures = 61, calls = 70, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 581 [2022-07-12 09:31:28,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:31:28,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:31:28,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:31:28,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:31:28,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:31:28,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:31:28,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:31:28,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:31:28,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (1/1) ... [2022-07-12 09:31:28,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:31:28,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:28,906 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 09:31:28,914 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 09:31:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:31:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:31:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:31:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:31:28,931 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:31:28,931 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:31:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:31:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:31:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:31:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:31:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:31:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:31:28,932 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:31:28,932 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:31:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:31:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:31:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:31:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:31:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:31:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:31:28,933 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:31:28,933 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:31:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:31:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:31:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:31:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:31:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:31:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:31:28,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:31:28,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:31:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:31:28,935 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:31:28,935 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:31:28,935 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:31:29,016 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:31:29,017 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:31:29,368 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:31:29,381 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:31:29,381 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-12 09:31:29,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:31:29 BoogieIcfgContainer [2022-07-12 09:31:29,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:31:29,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:31:29,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:31:29,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:31:29,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:31:28" (1/3) ... [2022-07-12 09:31:29,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7665df38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:31:29, skipping insertion in model container [2022-07-12 09:31:29,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:28" (2/3) ... [2022-07-12 09:31:29,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7665df38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:31:29, skipping insertion in model container [2022-07-12 09:31:29,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:31:29" (3/3) ... [2022-07-12 09:31:29,396 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-2.c [2022-07-12 09:31:29,405 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:31:29,407 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:31:29,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:31:29,468 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@55fd6c8b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3857654d [2022-07-12 09:31:29,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:31:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 239 states have (on average 1.594142259414226) internal successors, (381), 247 states have internal predecessors, (381), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 09:31:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:29,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:29,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:29,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash -496845882, now seen corresponding path program 1 times [2022-07-12 09:31:29,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:29,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010527762] [2022-07-12 09:31:29,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:29,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:29,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:29,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:29,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:29,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:29,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:29,821 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 09:31:29,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:29,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010527762] [2022-07-12 09:31:29,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010527762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:29,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:29,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:29,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163902616] [2022-07-12 09:31:29,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:29,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:29,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:29,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:29,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:29,855 INFO L87 Difference]: Start difference. First operand has 291 states, 239 states have (on average 1.594142259414226) internal successors, (381), 247 states have internal predecessors, (381), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:30,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:30,685 INFO L93 Difference]: Finished difference Result 727 states and 1118 transitions. [2022-07-12 09:31:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:31:30,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:31:30,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:30,709 INFO L225 Difference]: With dead ends: 727 [2022-07-12 09:31:30,710 INFO L226 Difference]: Without dead ends: 446 [2022-07-12 09:31:30,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:31:30,716 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 804 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:30,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 1750 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:31:30,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-07-12 09:31:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 380. [2022-07-12 09:31:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 310 states have (on average 1.4806451612903226) internal successors, (459), 318 states have internal predecessors, (459), 45 states have call successors, (45), 22 states have call predecessors, (45), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2022-07-12 09:31:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 556 transitions. [2022-07-12 09:31:30,778 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 556 transitions. Word has length 65 [2022-07-12 09:31:30,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:30,778 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 556 transitions. [2022-07-12 09:31:30,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 556 transitions. [2022-07-12 09:31:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:30,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:30,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:30,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:31:30,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:30,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1769535304, now seen corresponding path program 1 times [2022-07-12 09:31:30,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:30,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174890849] [2022-07-12 09:31:30,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:30,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:30,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:30,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:30,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:30,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:30,898 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 09:31:30,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:30,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174890849] [2022-07-12 09:31:30,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174890849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:30,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:30,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:31:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239036024] [2022-07-12 09:31:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:30,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:31:30,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:30,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:31:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:30,906 INFO L87 Difference]: Start difference. First operand 380 states and 556 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:31,509 INFO L93 Difference]: Finished difference Result 591 states and 851 transitions. [2022-07-12 09:31:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:31:31,509 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-12 09:31:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:31,512 INFO L225 Difference]: With dead ends: 591 [2022-07-12 09:31:31,512 INFO L226 Difference]: Without dead ends: 410 [2022-07-12 09:31:31,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:31:31,514 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 327 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:31,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1820 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:31,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-07-12 09:31:31,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 390. [2022-07-12 09:31:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 318 states have (on average 1.4685534591194969) internal successors, (467), 326 states have internal predecessors, (467), 45 states have call successors, (45), 22 states have call predecessors, (45), 25 states have return successors, (54), 44 states have call predecessors, (54), 41 states have call successors, (54) [2022-07-12 09:31:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 566 transitions. [2022-07-12 09:31:31,539 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 566 transitions. Word has length 65 [2022-07-12 09:31:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:31,539 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 566 transitions. [2022-07-12 09:31:31,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 566 transitions. [2022-07-12 09:31:31,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:31,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:31,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:31,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:31:31,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash 740176006, now seen corresponding path program 1 times [2022-07-12 09:31:31,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:31,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849210935] [2022-07-12 09:31:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:31,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:31,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:31,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:31,634 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 09:31:31,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:31,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849210935] [2022-07-12 09:31:31,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849210935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:31,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:31,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:31:31,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565815405] [2022-07-12 09:31:31,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:31,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:31:31,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:31:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:31,637 INFO L87 Difference]: Start difference. First operand 390 states and 566 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:32,184 INFO L93 Difference]: Finished difference Result 615 states and 879 transitions. [2022-07-12 09:31:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:31:32,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-12 09:31:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:32,187 INFO L225 Difference]: With dead ends: 615 [2022-07-12 09:31:32,187 INFO L226 Difference]: Without dead ends: 424 [2022-07-12 09:31:32,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:31:32,188 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 325 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:32,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1816 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:31:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-12 09:31:32,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 400. [2022-07-12 09:31:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 326 states have (on average 1.4570552147239264) internal successors, (475), 334 states have internal predecessors, (475), 45 states have call successors, (45), 22 states have call predecessors, (45), 27 states have return successors, (56), 46 states have call predecessors, (56), 41 states have call successors, (56) [2022-07-12 09:31:32,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 576 transitions. [2022-07-12 09:31:32,215 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 576 transitions. Word has length 65 [2022-07-12 09:31:32,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:32,216 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 576 transitions. [2022-07-12 09:31:32,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:32,216 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 576 transitions. [2022-07-12 09:31:32,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:32,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:32,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:32,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:31:32,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:32,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:32,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2126379400, now seen corresponding path program 1 times [2022-07-12 09:31:32,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:32,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063448692] [2022-07-12 09:31:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:32,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:32,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:32,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063448692] [2022-07-12 09:31:32,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063448692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:32,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:32,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863717159] [2022-07-12 09:31:32,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:32,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:32,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:32,317 INFO L87 Difference]: Start difference. First operand 400 states and 576 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:32,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:32,884 INFO L93 Difference]: Finished difference Result 748 states and 1057 transitions. [2022-07-12 09:31:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:31:32,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:31:32,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:32,887 INFO L225 Difference]: With dead ends: 748 [2022-07-12 09:31:32,887 INFO L226 Difference]: Without dead ends: 546 [2022-07-12 09:31:32,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:31:32,889 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 544 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:32,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1371 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:31:32,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-07-12 09:31:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 492. [2022-07-12 09:31:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 399 states have (on average 1.4285714285714286) internal successors, (570), 408 states have internal predecessors, (570), 56 states have call successors, (56), 29 states have call predecessors, (56), 35 states have return successors, (69), 58 states have call predecessors, (69), 52 states have call successors, (69) [2022-07-12 09:31:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 695 transitions. [2022-07-12 09:31:32,907 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 695 transitions. Word has length 65 [2022-07-12 09:31:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:32,907 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 695 transitions. [2022-07-12 09:31:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:32,907 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 695 transitions. [2022-07-12 09:31:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:32,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:32,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:32,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:31:32,909 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:32,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2028039286, now seen corresponding path program 1 times [2022-07-12 09:31:32,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:32,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37276468] [2022-07-12 09:31:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:32,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:32,988 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 09:31:32,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:32,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37276468] [2022-07-12 09:31:32,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37276468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:32,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:32,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:32,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241123898] [2022-07-12 09:31:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:32,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:32,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:32,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:32,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:32,991 INFO L87 Difference]: Start difference. First operand 492 states and 695 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:33,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:33,596 INFO L93 Difference]: Finished difference Result 884 states and 1206 transitions. [2022-07-12 09:31:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:31:33,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:31:33,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:33,599 INFO L225 Difference]: With dead ends: 884 [2022-07-12 09:31:33,600 INFO L226 Difference]: Without dead ends: 599 [2022-07-12 09:31:33,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:31:33,601 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 987 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:33,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1251 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-07-12 09:31:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 504. [2022-07-12 09:31:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 409 states have (on average 1.4180929095354524) internal successors, (580), 418 states have internal predecessors, (580), 57 states have call successors, (57), 30 states have call predecessors, (57), 36 states have return successors, (68), 59 states have call predecessors, (68), 53 states have call successors, (68) [2022-07-12 09:31:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 705 transitions. [2022-07-12 09:31:33,618 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 705 transitions. Word has length 65 [2022-07-12 09:31:33,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:33,618 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 705 transitions. [2022-07-12 09:31:33,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 705 transitions. [2022-07-12 09:31:33,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:33,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:33,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:33,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:31:33,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:33,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2132914504, now seen corresponding path program 1 times [2022-07-12 09:31:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:33,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678070256] [2022-07-12 09:31:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:33,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:33,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:33,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:33,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:33,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:33,699 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 09:31:33,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:33,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678070256] [2022-07-12 09:31:33,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678070256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:33,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:33,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:33,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117046521] [2022-07-12 09:31:33,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:33,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:33,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:33,702 INFO L87 Difference]: Start difference. First operand 504 states and 705 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:33,983 INFO L93 Difference]: Finished difference Result 1146 states and 1552 transitions. [2022-07-12 09:31:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:31:33,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:31:33,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:33,986 INFO L225 Difference]: With dead ends: 1146 [2022-07-12 09:31:33,986 INFO L226 Difference]: Without dead ends: 850 [2022-07-12 09:31:33,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:31:33,988 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 972 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:33,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 992 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-07-12 09:31:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 794. [2022-07-12 09:31:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 633 states have (on average 1.3696682464454977) internal successors, (867), 649 states have internal predecessors, (867), 92 states have call successors, (92), 52 states have call predecessors, (92), 67 states have return successors, (125), 99 states have call predecessors, (125), 88 states have call successors, (125) [2022-07-12 09:31:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1084 transitions. [2022-07-12 09:31:34,016 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1084 transitions. Word has length 65 [2022-07-12 09:31:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:34,016 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1084 transitions. [2022-07-12 09:31:34,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1084 transitions. [2022-07-12 09:31:34,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:31:34,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:34,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:34,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:31:34,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:34,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1916035770, now seen corresponding path program 1 times [2022-07-12 09:31:34,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:34,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132618664] [2022-07-12 09:31:34,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:34,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:34,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:34,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132618664] [2022-07-12 09:31:34,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132618664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:34,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:34,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:34,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799753991] [2022-07-12 09:31:34,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:34,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:34,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:34,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:34,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:34,058 INFO L87 Difference]: Start difference. First operand 794 states and 1084 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:34,390 INFO L93 Difference]: Finished difference Result 1997 states and 2655 transitions. [2022-07-12 09:31:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:31:34,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-12 09:31:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:34,395 INFO L225 Difference]: With dead ends: 1997 [2022-07-12 09:31:34,395 INFO L226 Difference]: Without dead ends: 1390 [2022-07-12 09:31:34,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:34,397 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 713 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:34,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 947 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2022-07-12 09:31:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1275. [2022-07-12 09:31:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1012 states have (on average 1.33201581027668) internal successors, (1348), 1031 states have internal predecessors, (1348), 137 states have call successors, (137), 96 states have call predecessors, (137), 124 states have return successors, (197), 154 states have call predecessors, (197), 133 states have call successors, (197) [2022-07-12 09:31:34,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1682 transitions. [2022-07-12 09:31:34,450 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1682 transitions. Word has length 66 [2022-07-12 09:31:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:34,450 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1682 transitions. [2022-07-12 09:31:34,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:34,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1682 transitions. [2022-07-12 09:31:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:31:34,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:34,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:31:34,452 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:34,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash -457796111, now seen corresponding path program 1 times [2022-07-12 09:31:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:34,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295668226] [2022-07-12 09:31:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:34,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,503 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 09:31:34,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:34,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295668226] [2022-07-12 09:31:34,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295668226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:34,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:34,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:34,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282949980] [2022-07-12 09:31:34,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:34,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:34,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:34,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:34,506 INFO L87 Difference]: Start difference. First operand 1275 states and 1682 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:34,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:34,766 INFO L93 Difference]: Finished difference Result 3463 states and 4488 transitions. [2022-07-12 09:31:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:31:34,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-12 09:31:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:34,775 INFO L225 Difference]: With dead ends: 3463 [2022-07-12 09:31:34,775 INFO L226 Difference]: Without dead ends: 2395 [2022-07-12 09:31:34,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:31:34,778 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 775 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:34,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 988 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:34,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-07-12 09:31:34,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2137. [2022-07-12 09:31:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1678 states have (on average 1.296185935637664) internal successors, (2175), 1707 states have internal predecessors, (2175), 235 states have call successors, (235), 180 states have call predecessors, (235), 222 states have return successors, (333), 256 states have call predecessors, (333), 231 states have call successors, (333) [2022-07-12 09:31:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2743 transitions. [2022-07-12 09:31:34,851 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2743 transitions. Word has length 66 [2022-07-12 09:31:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:34,852 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 2743 transitions. [2022-07-12 09:31:34,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:34,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2743 transitions. [2022-07-12 09:31:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 09:31:34,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:34,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:34,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:31:34,856 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:34,856 INFO L85 PathProgramCache]: Analyzing trace with hash 721355205, now seen corresponding path program 1 times [2022-07-12 09:31:34,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:34,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180775857] [2022-07-12 09:31:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:34,914 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 09:31:34,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:34,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180775857] [2022-07-12 09:31:34,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180775857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:34,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:34,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:34,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524038659] [2022-07-12 09:31:34,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:34,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:34,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:34,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:34,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:34,916 INFO L87 Difference]: Start difference. First operand 2137 states and 2743 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:35,182 INFO L93 Difference]: Finished difference Result 5047 states and 6393 transitions. [2022-07-12 09:31:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:31:35,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-12 09:31:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:35,194 INFO L225 Difference]: With dead ends: 5047 [2022-07-12 09:31:35,194 INFO L226 Difference]: Without dead ends: 3117 [2022-07-12 09:31:35,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:35,199 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 954 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:35,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 842 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2022-07-12 09:31:35,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 2869. [2022-07-12 09:31:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2246 states have (on average 1.2818343722172751) internal successors, (2879), 2283 states have internal predecessors, (2879), 315 states have call successors, (315), 250 states have call predecessors, (315), 306 states have return successors, (442), 342 states have call predecessors, (442), 311 states have call successors, (442) [2022-07-12 09:31:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 3636 transitions. [2022-07-12 09:31:35,292 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 3636 transitions. Word has length 72 [2022-07-12 09:31:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:35,292 INFO L495 AbstractCegarLoop]: Abstraction has 2869 states and 3636 transitions. [2022-07-12 09:31:35,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:35,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 3636 transitions. [2022-07-12 09:31:35,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 09:31:35,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:35,294 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:35,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:31:35,294 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:35,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:35,295 INFO L85 PathProgramCache]: Analyzing trace with hash 370804326, now seen corresponding path program 1 times [2022-07-12 09:31:35,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:35,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317486533] [2022-07-12 09:31:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:35,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:35,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:35,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317486533] [2022-07-12 09:31:35,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317486533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:35,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:35,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:35,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231793850] [2022-07-12 09:31:35,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:35,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:35,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:35,353 INFO L87 Difference]: Start difference. First operand 2869 states and 3636 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:31:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:35,702 INFO L93 Difference]: Finished difference Result 3643 states and 4567 transitions. [2022-07-12 09:31:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:31:35,702 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-12 09:31:35,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:35,715 INFO L225 Difference]: With dead ends: 3643 [2022-07-12 09:31:35,716 INFO L226 Difference]: Without dead ends: 3640 [2022-07-12 09:31:35,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:31:35,718 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1363 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:35,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 820 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:35,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-07-12 09:31:35,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3363. [2022-07-12 09:31:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 2631 states have (on average 1.273660205245154) internal successors, (3351), 2673 states have internal predecessors, (3351), 365 states have call successors, (365), 294 states have call predecessors, (365), 365 states have return successors, (521), 402 states have call predecessors, (521), 362 states have call successors, (521) [2022-07-12 09:31:35,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4237 transitions. [2022-07-12 09:31:35,847 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4237 transitions. Word has length 73 [2022-07-12 09:31:35,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:35,848 INFO L495 AbstractCegarLoop]: Abstraction has 3363 states and 4237 transitions. [2022-07-12 09:31:35,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:31:35,849 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4237 transitions. [2022-07-12 09:31:35,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 09:31:35,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:35,850 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:35,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:31:35,850 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:35,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:35,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1390842321, now seen corresponding path program 1 times [2022-07-12 09:31:35,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:35,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682013317] [2022-07-12 09:31:35,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:35,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:35,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:35,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682013317] [2022-07-12 09:31:35,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682013317] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:35,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531487771] [2022-07-12 09:31:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:35,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:35,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:35,952 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 09:31:35,957 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 09:31:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:36,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:31:36,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:36,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:36,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:31:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:36,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531487771] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:31:36,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:31:36,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-12 09:31:36,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439987421] [2022-07-12 09:31:36,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:31:36,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:31:36,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:31:36,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:36,408 INFO L87 Difference]: Start difference. First operand 3363 states and 4237 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:31:37,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:37,484 INFO L93 Difference]: Finished difference Result 7804 states and 9723 transitions. [2022-07-12 09:31:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 09:31:37,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-12 09:31:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:37,508 INFO L225 Difference]: With dead ends: 7804 [2022-07-12 09:31:37,508 INFO L226 Difference]: Without dead ends: 7801 [2022-07-12 09:31:37,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-12 09:31:37,511 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1673 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:37,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1737 Valid, 1819 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:31:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2022-07-12 09:31:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 5153. [2022-07-12 09:31:37,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 4035 states have (on average 1.2706319702602231) internal successors, (5127), 4099 states have internal predecessors, (5127), 549 states have call successors, (549), 452 states have call predecessors, (549), 567 states have return successors, (799), 608 states have call predecessors, (799), 546 states have call successors, (799) [2022-07-12 09:31:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 6475 transitions. [2022-07-12 09:31:37,789 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 6475 transitions. Word has length 74 [2022-07-12 09:31:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:37,789 INFO L495 AbstractCegarLoop]: Abstraction has 5153 states and 6475 transitions. [2022-07-12 09:31:37,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:31:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 6475 transitions. [2022-07-12 09:31:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 09:31:37,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:37,791 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:37,837 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 09:31:38,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 09:31:38,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:38,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:38,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2100794586, now seen corresponding path program 2 times [2022-07-12 09:31:38,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:38,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195293350] [2022-07-12 09:31:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:38,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:38,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:38,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:38,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195293350] [2022-07-12 09:31:38,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195293350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:38,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:38,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:38,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021561688] [2022-07-12 09:31:38,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:38,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:38,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:38,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:38,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:38,078 INFO L87 Difference]: Start difference. First operand 5153 states and 6475 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:31:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:38,434 INFO L93 Difference]: Finished difference Result 7835 states and 9848 transitions. [2022-07-12 09:31:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:31:38,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-12 09:31:38,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:38,447 INFO L225 Difference]: With dead ends: 7835 [2022-07-12 09:31:38,447 INFO L226 Difference]: Without dead ends: 3760 [2022-07-12 09:31:38,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:38,455 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 680 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:38,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 1138 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2022-07-12 09:31:38,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 3525. [2022-07-12 09:31:38,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 2763 states have (on average 1.2547955121245022) internal successors, (3467), 2805 states have internal predecessors, (3467), 381 states have call successors, (381), 308 states have call predecessors, (381), 379 states have return successors, (525), 418 states have call predecessors, (525), 378 states have call successors, (525) [2022-07-12 09:31:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 4373 transitions. [2022-07-12 09:31:38,620 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 4373 transitions. Word has length 77 [2022-07-12 09:31:38,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:38,620 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 4373 transitions. [2022-07-12 09:31:38,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:31:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 4373 transitions. [2022-07-12 09:31:38,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:31:38,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:38,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:38,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:31:38,622 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:38,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:38,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1884573217, now seen corresponding path program 1 times [2022-07-12 09:31:38,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:38,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420100971] [2022-07-12 09:31:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:38,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:31:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:38,670 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 09:31:38,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:38,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420100971] [2022-07-12 09:31:38,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420100971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:38,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:38,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:38,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128856384] [2022-07-12 09:31:38,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:38,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:38,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:38,672 INFO L87 Difference]: Start difference. First operand 3525 states and 4373 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:39,503 INFO L93 Difference]: Finished difference Result 10397 states and 12790 transitions. [2022-07-12 09:31:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 09:31:39,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-12 09:31:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:39,520 INFO L225 Difference]: With dead ends: 10397 [2022-07-12 09:31:39,520 INFO L226 Difference]: Without dead ends: 5760 [2022-07-12 09:31:39,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-12 09:31:39,530 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1165 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:39,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1299 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5760 states. [2022-07-12 09:31:39,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5760 to 5440. [2022-07-12 09:31:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5440 states, 4221 states have (on average 1.2295664534470505) internal successors, (5190), 4306 states have internal predecessors, (5190), 585 states have call successors, (585), 482 states have call predecessors, (585), 632 states have return successors, (907), 658 states have call predecessors, (907), 582 states have call successors, (907) [2022-07-12 09:31:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5440 states to 5440 states and 6682 transitions. [2022-07-12 09:31:39,762 INFO L78 Accepts]: Start accepts. Automaton has 5440 states and 6682 transitions. Word has length 84 [2022-07-12 09:31:39,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:39,762 INFO L495 AbstractCegarLoop]: Abstraction has 5440 states and 6682 transitions. [2022-07-12 09:31:39,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5440 states and 6682 transitions. [2022-07-12 09:31:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 09:31:39,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:39,765 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:31:39,765 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1300737020, now seen corresponding path program 1 times [2022-07-12 09:31:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:39,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054865557] [2022-07-12 09:31:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:39,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:39,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:31:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:39,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:31:39,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:39,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054865557] [2022-07-12 09:31:39,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054865557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:39,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:39,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:31:39,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136341857] [2022-07-12 09:31:39,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:39,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:31:39,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:39,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:31:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:39,834 INFO L87 Difference]: Start difference. First operand 5440 states and 6682 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:40,838 INFO L93 Difference]: Finished difference Result 9443 states and 11522 transitions. [2022-07-12 09:31:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 09:31:40,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-12 09:31:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:40,851 INFO L225 Difference]: With dead ends: 9443 [2022-07-12 09:31:40,851 INFO L226 Difference]: Without dead ends: 4850 [2022-07-12 09:31:40,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:31:40,860 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1372 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:40,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 1753 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:31:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4850 states. [2022-07-12 09:31:41,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4850 to 4516. [2022-07-12 09:31:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3510 states have (on average 1.221937321937322) internal successors, (4289), 3577 states have internal predecessors, (4289), 486 states have call successors, (486), 397 states have call predecessors, (486), 518 states have return successors, (685), 548 states have call predecessors, (685), 483 states have call successors, (685) [2022-07-12 09:31:41,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 5460 transitions. [2022-07-12 09:31:41,058 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 5460 transitions. Word has length 93 [2022-07-12 09:31:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:41,058 INFO L495 AbstractCegarLoop]: Abstraction has 4516 states and 5460 transitions. [2022-07-12 09:31:41,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:31:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 5460 transitions. [2022-07-12 09:31:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:41,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:41,061 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] [2022-07-12 09:31:41,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:31:41,061 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1368673816, now seen corresponding path program 1 times [2022-07-12 09:31:41,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:41,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830487110] [2022-07-12 09:31:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:41,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:41,110 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 09:31:41,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:41,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830487110] [2022-07-12 09:31:41,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830487110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:41,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:41,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:41,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085947447] [2022-07-12 09:31:41,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:41,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:41,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:41,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:41,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:41,112 INFO L87 Difference]: Start difference. First operand 4516 states and 5460 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 09:31:42,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:42,039 INFO L93 Difference]: Finished difference Result 4970 states and 6171 transitions. [2022-07-12 09:31:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:31:42,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:42,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:42,049 INFO L225 Difference]: With dead ends: 4970 [2022-07-12 09:31:42,050 INFO L226 Difference]: Without dead ends: 4798 [2022-07-12 09:31:42,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:42,051 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 866 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:42,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1077 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:31:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4798 states. [2022-07-12 09:31:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4798 to 4689. [2022-07-12 09:31:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 3663 states have (on average 1.2358722358722358) internal successors, (4527), 3731 states have internal predecessors, (4527), 499 states have call successors, (499), 403 states have call predecessors, (499), 525 states have return successors, (701), 561 states have call predecessors, (701), 496 states have call successors, (701) [2022-07-12 09:31:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 5727 transitions. [2022-07-12 09:31:42,288 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 5727 transitions. Word has length 91 [2022-07-12 09:31:42,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:42,288 INFO L495 AbstractCegarLoop]: Abstraction has 4689 states and 5727 transitions. [2022-07-12 09:31:42,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 09:31:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 5727 transitions. [2022-07-12 09:31:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:42,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:42,291 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] [2022-07-12 09:31:42,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:31:42,291 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:42,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:42,292 INFO L85 PathProgramCache]: Analyzing trace with hash 871588836, now seen corresponding path program 1 times [2022-07-12 09:31:42,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:42,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814129345] [2022-07-12 09:31:42,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:42,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:42,359 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 09:31:42,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:42,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814129345] [2022-07-12 09:31:42,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814129345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:42,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:42,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:42,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71139327] [2022-07-12 09:31:42,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:42,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:42,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:42,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:42,362 INFO L87 Difference]: Start difference. First operand 4689 states and 5727 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:43,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:43,567 INFO L93 Difference]: Finished difference Result 5373 states and 6793 transitions. [2022-07-12 09:31:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:31:43,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:43,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:43,577 INFO L225 Difference]: With dead ends: 5373 [2022-07-12 09:31:43,577 INFO L226 Difference]: Without dead ends: 5028 [2022-07-12 09:31:43,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:31:43,579 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 861 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:43,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1721 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:31:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-07-12 09:31:43,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4851. [2022-07-12 09:31:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 3805 states have (on average 1.2465177398160316) internal successors, (4743), 3874 states have internal predecessors, (4743), 512 states have call successors, (512), 409 states have call predecessors, (512), 532 states have return successors, (716), 575 states have call predecessors, (716), 509 states have call successors, (716) [2022-07-12 09:31:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 5971 transitions. [2022-07-12 09:31:43,775 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 5971 transitions. Word has length 91 [2022-07-12 09:31:43,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:43,775 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 5971 transitions. [2022-07-12 09:31:43,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 5971 transitions. [2022-07-12 09:31:43,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:43,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:43,778 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] [2022-07-12 09:31:43,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:31:43,778 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:43,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1689274010, now seen corresponding path program 1 times [2022-07-12 09:31:43,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:43,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865840483] [2022-07-12 09:31:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:43,832 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 09:31:43,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:43,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865840483] [2022-07-12 09:31:43,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865840483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:43,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:43,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:43,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299148262] [2022-07-12 09:31:43,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:43,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:43,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:43,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:43,834 INFO L87 Difference]: Start difference. First operand 4851 states and 5971 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:45,058 INFO L93 Difference]: Finished difference Result 5966 states and 7705 transitions. [2022-07-12 09:31:45,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:31:45,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:45,070 INFO L225 Difference]: With dead ends: 5966 [2022-07-12 09:31:45,070 INFO L226 Difference]: Without dead ends: 5459 [2022-07-12 09:31:45,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:31:45,074 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 858 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:45,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 1713 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:31:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2022-07-12 09:31:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 5176. [2022-07-12 09:31:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 4090 states have (on average 1.2655256723716382) internal successors, (5176), 4161 states have internal predecessors, (5176), 538 states have call successors, (538), 421 states have call predecessors, (538), 546 states have return successors, (750), 603 states have call predecessors, (750), 535 states have call successors, (750) [2022-07-12 09:31:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 6464 transitions. [2022-07-12 09:31:45,317 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 6464 transitions. Word has length 91 [2022-07-12 09:31:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:45,317 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 6464 transitions. [2022-07-12 09:31:45,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 6464 transitions. [2022-07-12 09:31:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:45,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:45,320 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] [2022-07-12 09:31:45,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:31:45,321 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:45,321 INFO L85 PathProgramCache]: Analyzing trace with hash -802051164, now seen corresponding path program 1 times [2022-07-12 09:31:45,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:45,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793918304] [2022-07-12 09:31:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:45,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:45,385 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 09:31:45,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:45,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793918304] [2022-07-12 09:31:45,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793918304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:45,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:45,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:45,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063046282] [2022-07-12 09:31:45,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:45,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:45,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:45,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:45,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:45,387 INFO L87 Difference]: Start difference. First operand 5176 states and 6464 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:46,172 INFO L93 Difference]: Finished difference Result 6279 states and 8189 transitions. [2022-07-12 09:31:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:31:46,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:46,182 INFO L225 Difference]: With dead ends: 6279 [2022-07-12 09:31:46,183 INFO L226 Difference]: Without dead ends: 5447 [2022-07-12 09:31:46,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:46,188 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 694 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:46,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1061 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5447 states. [2022-07-12 09:31:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5447 to 5176. [2022-07-12 09:31:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 4090 states have (on average 1.2643031784841077) internal successors, (5171), 4161 states have internal predecessors, (5171), 538 states have call successors, (538), 421 states have call predecessors, (538), 546 states have return successors, (750), 603 states have call predecessors, (750), 535 states have call successors, (750) [2022-07-12 09:31:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 6459 transitions. [2022-07-12 09:31:46,425 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 6459 transitions. Word has length 91 [2022-07-12 09:31:46,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:46,425 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 6459 transitions. [2022-07-12 09:31:46,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 6459 transitions. [2022-07-12 09:31:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:46,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:46,429 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] [2022-07-12 09:31:46,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:31:46,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:46,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1581873574, now seen corresponding path program 1 times [2022-07-12 09:31:46,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:46,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148528790] [2022-07-12 09:31:46,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:46,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:46,485 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 09:31:46,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:46,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148528790] [2022-07-12 09:31:46,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148528790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:46,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:46,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:46,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284784511] [2022-07-12 09:31:46,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:46,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:46,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:46,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:46,488 INFO L87 Difference]: Start difference. First operand 5176 states and 6459 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:47,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:47,646 INFO L93 Difference]: Finished difference Result 7104 states and 9426 transitions. [2022-07-12 09:31:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:31:47,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:47,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:47,675 INFO L225 Difference]: With dead ends: 7104 [2022-07-12 09:31:47,675 INFO L226 Difference]: Without dead ends: 6272 [2022-07-12 09:31:47,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:31:47,679 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 849 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:47,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1701 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:31:47,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2022-07-12 09:31:47,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 5831. [2022-07-12 09:31:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 4665 states have (on average 1.2943193997856377) internal successors, (6038), 4740 states have internal predecessors, (6038), 590 states have call successors, (590), 445 states have call predecessors, (590), 574 states have return successors, (824), 659 states have call predecessors, (824), 587 states have call successors, (824) [2022-07-12 09:31:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 7452 transitions. [2022-07-12 09:31:47,937 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 7452 transitions. Word has length 91 [2022-07-12 09:31:47,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:47,938 INFO L495 AbstractCegarLoop]: Abstraction has 5831 states and 7452 transitions. [2022-07-12 09:31:47,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 7452 transitions. [2022-07-12 09:31:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:47,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:47,943 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] [2022-07-12 09:31:47,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:31:47,943 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1658774372, now seen corresponding path program 1 times [2022-07-12 09:31:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:47,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412993878] [2022-07-12 09:31:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:47,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:48,018 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 09:31:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:48,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412993878] [2022-07-12 09:31:48,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412993878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:48,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:48,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:48,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903539181] [2022-07-12 09:31:48,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:48,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:48,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:48,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:48,020 INFO L87 Difference]: Start difference. First operand 5831 states and 7452 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:48,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:48,736 INFO L93 Difference]: Finished difference Result 7747 states and 10423 transitions. [2022-07-12 09:31:48,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:31:48,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:48,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:48,748 INFO L225 Difference]: With dead ends: 7747 [2022-07-12 09:31:48,748 INFO L226 Difference]: Without dead ends: 6260 [2022-07-12 09:31:48,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:48,753 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 814 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:48,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 895 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:31:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6260 states. [2022-07-12 09:31:49,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6260 to 5831. [2022-07-12 09:31:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 4665 states have (on average 1.2923901393354769) internal successors, (6029), 4740 states have internal predecessors, (6029), 590 states have call successors, (590), 445 states have call predecessors, (590), 574 states have return successors, (824), 659 states have call predecessors, (824), 587 states have call successors, (824) [2022-07-12 09:31:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 7443 transitions. [2022-07-12 09:31:49,030 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 7443 transitions. Word has length 91 [2022-07-12 09:31:49,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:49,030 INFO L495 AbstractCegarLoop]: Abstraction has 5831 states and 7443 transitions. [2022-07-12 09:31:49,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 7443 transitions. [2022-07-12 09:31:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:49,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:49,034 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] [2022-07-12 09:31:49,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:31:49,034 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:49,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash -727735134, now seen corresponding path program 1 times [2022-07-12 09:31:49,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:49,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673499553] [2022-07-12 09:31:49,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:49,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:49,082 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 09:31:49,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:49,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673499553] [2022-07-12 09:31:49,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673499553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:49,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:49,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:49,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925154027] [2022-07-12 09:31:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:49,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:49,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:49,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:49,085 INFO L87 Difference]: Start difference. First operand 5831 states and 7443 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:49,860 INFO L93 Difference]: Finished difference Result 7737 states and 10376 transitions. [2022-07-12 09:31:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:31:49,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:49,872 INFO L225 Difference]: With dead ends: 7737 [2022-07-12 09:31:49,873 INFO L226 Difference]: Without dead ends: 6250 [2022-07-12 09:31:49,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:49,877 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 700 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:49,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1038 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2022-07-12 09:31:50,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 5831. [2022-07-12 09:31:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5831 states, 4665 states have (on average 1.2904608788853162) internal successors, (6020), 4740 states have internal predecessors, (6020), 590 states have call successors, (590), 445 states have call predecessors, (590), 574 states have return successors, (824), 659 states have call predecessors, (824), 587 states have call successors, (824) [2022-07-12 09:31:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5831 states to 5831 states and 7434 transitions. [2022-07-12 09:31:50,197 INFO L78 Accepts]: Start accepts. Automaton has 5831 states and 7434 transitions. Word has length 91 [2022-07-12 09:31:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:50,197 INFO L495 AbstractCegarLoop]: Abstraction has 5831 states and 7434 transitions. [2022-07-12 09:31:50,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5831 states and 7434 transitions. [2022-07-12 09:31:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:50,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:50,201 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] [2022-07-12 09:31:50,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:31:50,201 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:50,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:50,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1220361308, now seen corresponding path program 1 times [2022-07-12 09:31:50,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:50,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434788570] [2022-07-12 09:31:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:50,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:50,259 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 09:31:50,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:50,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434788570] [2022-07-12 09:31:50,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434788570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:50,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:50,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:50,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946045295] [2022-07-12 09:31:50,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:50,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:50,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:50,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:50,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:50,262 INFO L87 Difference]: Start difference. First operand 5831 states and 7434 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:51,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:51,581 INFO L93 Difference]: Finished difference Result 9573 states and 13115 transitions. [2022-07-12 09:31:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:31:51,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:51,596 INFO L225 Difference]: With dead ends: 9573 [2022-07-12 09:31:51,596 INFO L226 Difference]: Without dead ends: 8086 [2022-07-12 09:31:51,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:31:51,600 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 887 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:51,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1671 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:31:51,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8086 states. [2022-07-12 09:31:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8086 to 7148. [2022-07-12 09:31:51,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7148 states, 5830 states have (on average 1.3317324185248713) internal successors, (7764), 5913 states have internal predecessors, (7764), 686 states have call successors, (686), 493 states have call predecessors, (686), 630 states have return successors, (982), 763 states have call predecessors, (982), 683 states have call successors, (982) [2022-07-12 09:31:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7148 states to 7148 states and 9432 transitions. [2022-07-12 09:31:51,904 INFO L78 Accepts]: Start accepts. Automaton has 7148 states and 9432 transitions. Word has length 91 [2022-07-12 09:31:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:51,904 INFO L495 AbstractCegarLoop]: Abstraction has 7148 states and 9432 transitions. [2022-07-12 09:31:51,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 7148 states and 9432 transitions. [2022-07-12 09:31:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:51,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:51,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:51,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:31:51,909 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:51,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash -266421150, now seen corresponding path program 1 times [2022-07-12 09:31:51,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:51,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085861517] [2022-07-12 09:31:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:51,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,969 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 09:31:51,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:51,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085861517] [2022-07-12 09:31:51,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085861517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:51,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:51,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:51,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660467792] [2022-07-12 09:31:51,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:51,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:51,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:51,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:51,970 INFO L87 Difference]: Start difference. First operand 7148 states and 9432 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:53,333 INFO L93 Difference]: Finished difference Result 14066 states and 19975 transitions. [2022-07-12 09:31:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:31:53,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:53,359 INFO L225 Difference]: With dead ends: 14066 [2022-07-12 09:31:53,359 INFO L226 Difference]: Without dead ends: 11262 [2022-07-12 09:31:53,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:31:53,371 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 847 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:53,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1667 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:31:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11262 states. [2022-07-12 09:31:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11262 to 9767. [2022-07-12 09:31:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 8153 states have (on average 1.3793695572182019) internal successors, (11246), 8252 states have internal predecessors, (11246), 870 states have call successors, (870), 589 states have call predecessors, (870), 742 states have return successors, (1344), 963 states have call predecessors, (1344), 867 states have call successors, (1344) [2022-07-12 09:31:53,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13460 transitions. [2022-07-12 09:31:53,843 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13460 transitions. Word has length 91 [2022-07-12 09:31:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:53,843 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 13460 transitions. [2022-07-12 09:31:53,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:53,844 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13460 transitions. [2022-07-12 09:31:53,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:53,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:53,851 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] [2022-07-12 09:31:53,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:31:53,851 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:53,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1482574876, now seen corresponding path program 1 times [2022-07-12 09:31:53,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:53,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297433896] [2022-07-12 09:31:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:53,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,910 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 09:31:53,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:53,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297433896] [2022-07-12 09:31:53,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297433896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:53,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:53,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:53,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393473676] [2022-07-12 09:31:53,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:53,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:53,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:53,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:53,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:53,912 INFO L87 Difference]: Start difference. First operand 9767 states and 13460 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:55,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:55,402 INFO L93 Difference]: Finished difference Result 18999 states and 27445 transitions. [2022-07-12 09:31:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:31:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:55,430 INFO L225 Difference]: With dead ends: 18999 [2022-07-12 09:31:55,431 INFO L226 Difference]: Without dead ends: 13577 [2022-07-12 09:31:55,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:31:55,445 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 555 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:55,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1351 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:31:55,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13577 states. [2022-07-12 09:31:55,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13577 to 9866. [2022-07-12 09:31:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9866 states, 8252 states have (on average 1.374818225884634) internal successors, (11345), 8351 states have internal predecessors, (11345), 870 states have call successors, (870), 589 states have call predecessors, (870), 742 states have return successors, (1344), 963 states have call predecessors, (1344), 867 states have call successors, (1344) [2022-07-12 09:31:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9866 states to 9866 states and 13559 transitions. [2022-07-12 09:31:55,932 INFO L78 Accepts]: Start accepts. Automaton has 9866 states and 13559 transitions. Word has length 91 [2022-07-12 09:31:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:55,932 INFO L495 AbstractCegarLoop]: Abstraction has 9866 states and 13559 transitions. [2022-07-12 09:31:55,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:55,933 INFO L276 IsEmpty]: Start isEmpty. Operand 9866 states and 13559 transitions. [2022-07-12 09:31:55,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:31:55,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:55,937 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] [2022-07-12 09:31:55,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:31:55,938 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:55,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:55,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1048845790, now seen corresponding path program 1 times [2022-07-12 09:31:55,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:55,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231341623] [2022-07-12 09:31:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:55,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:31:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:31:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:31:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:31:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,003 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 09:31:56,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:56,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231341623] [2022-07-12 09:31:56,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231341623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:56,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:56,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824398030] [2022-07-12 09:31:56,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:56,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:56,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:56,004 INFO L87 Difference]: Start difference. First operand 9866 states and 13559 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:31:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:58,882 INFO L93 Difference]: Finished difference Result 34668 states and 52337 transitions. [2022-07-12 09:31:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 09:31:58,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-07-12 09:31:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:58,943 INFO L225 Difference]: With dead ends: 34668 [2022-07-12 09:31:58,943 INFO L226 Difference]: Without dead ends: 29147 [2022-07-12 09:31:58,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:31:58,964 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1819 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:58,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 1517 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:31:58,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29147 states. [2022-07-12 09:32:00,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29147 to 24698. [2022-07-12 09:32:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24698 states, 21266 states have (on average 1.4271607260415686) internal successors, (30350), 21560 states have internal predecessors, (30350), 1998 states have call successors, (1998), 1183 states have call predecessors, (1998), 1432 states have return successors, (3771), 1992 states have call predecessors, (3771), 1995 states have call successors, (3771) [2022-07-12 09:32:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24698 states to 24698 states and 36119 transitions. [2022-07-12 09:32:00,378 INFO L78 Accepts]: Start accepts. Automaton has 24698 states and 36119 transitions. Word has length 91 [2022-07-12 09:32:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:00,378 INFO L495 AbstractCegarLoop]: Abstraction has 24698 states and 36119 transitions. [2022-07-12 09:32:00,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 09:32:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 24698 states and 36119 transitions. [2022-07-12 09:32:00,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 09:32:00,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:00,400 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:00,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:32:00,400 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:00,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash -948044783, now seen corresponding path program 1 times [2022-07-12 09:32:00,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:00,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228353724] [2022-07-12 09:32:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:00,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:32:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:32:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:32:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 09:32:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 09:32:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 09:32:00,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:00,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228353724] [2022-07-12 09:32:00,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228353724] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:32:00,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768757526] [2022-07-12 09:32:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:00,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:00,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:00,466 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 09:32:00,467 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 09:32:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:00,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 09:32:00,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:32:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:32:00,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:32:00,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768757526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:00,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:32:00,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-12 09:32:00,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960266259] [2022-07-12 09:32:00,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:00,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:00,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:00,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:00,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:32:00,576 INFO L87 Difference]: Start difference. First operand 24698 states and 36119 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:32:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:01,589 INFO L93 Difference]: Finished difference Result 26864 states and 38742 transitions. [2022-07-12 09:32:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:01,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-12 09:32:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:01,644 INFO L225 Difference]: With dead ends: 26864 [2022-07-12 09:32:01,645 INFO L226 Difference]: Without dead ends: 22559 [2022-07-12 09:32:01,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:32:01,662 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 34 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:01,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1985 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:32:01,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22559 states. [2022-07-12 09:32:02,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22559 to 22434. [2022-07-12 09:32:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22434 states, 19579 states have (on average 1.4452219214464477) internal successors, (28296), 19822 states have internal predecessors, (28296), 1722 states have call successors, (1722), 949 states have call predecessors, (1722), 1131 states have return successors, (3378), 1694 states have call predecessors, (3378), 1719 states have call successors, (3378) [2022-07-12 09:32:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22434 states to 22434 states and 33396 transitions. [2022-07-12 09:32:02,933 INFO L78 Accepts]: Start accepts. Automaton has 22434 states and 33396 transitions. Word has length 145 [2022-07-12 09:32:02,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:02,934 INFO L495 AbstractCegarLoop]: Abstraction has 22434 states and 33396 transitions. [2022-07-12 09:32:02,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:32:02,934 INFO L276 IsEmpty]: Start isEmpty. Operand 22434 states and 33396 transitions. [2022-07-12 09:32:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 09:32:02,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:02,954 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:02,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 09:32:03,166 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,SelfDestructingSolverStorable25 [2022-07-12 09:32:03,167 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash -634587689, now seen corresponding path program 1 times [2022-07-12 09:32:03,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:03,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823209358] [2022-07-12 09:32:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:32:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 09:32:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 09:32:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 09:32:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 09:32:03,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 09:32:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 09:32:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 09:32:03,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823209358] [2022-07-12 09:32:03,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823209358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:03,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:03,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:03,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822224960] [2022-07-12 09:32:03,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:03,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:03,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:03,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:03,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:03,219 INFO L87 Difference]: Start difference. First operand 22434 states and 33396 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 09:32:04,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:04,559 INFO L93 Difference]: Finished difference Result 22499 states and 33464 transitions. [2022-07-12 09:32:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:04,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-12 09:32:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:04,609 INFO L225 Difference]: With dead ends: 22499 [2022-07-12 09:32:04,609 INFO L226 Difference]: Without dead ends: 22056 [2022-07-12 09:32:04,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:32:04,621 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 579 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:04,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 888 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:32:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22056 states. [2022-07-12 09:32:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22056 to 21994. [2022-07-12 09:32:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21994 states, 19235 states have (on average 1.4500649857031453) internal successors, (27892), 19475 states have internal predecessors, (27892), 1676 states have call successors, (1676), 909 states have call predecessors, (1676), 1081 states have return successors, (3314), 1641 states have call predecessors, (3314), 1673 states have call successors, (3314) [2022-07-12 09:32:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21994 states to 21994 states and 32882 transitions. [2022-07-12 09:32:05,788 INFO L78 Accepts]: Start accepts. Automaton has 21994 states and 32882 transitions. Word has length 147 [2022-07-12 09:32:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:05,788 INFO L495 AbstractCegarLoop]: Abstraction has 21994 states and 32882 transitions. [2022-07-12 09:32:05,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 09:32:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 21994 states and 32882 transitions. [2022-07-12 09:32:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 09:32:05,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:05,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:05,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:32:05,810 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:05,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash 660156374, now seen corresponding path program 1 times [2022-07-12 09:32:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:05,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65231457] [2022-07-12 09:32:05,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:05,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:32:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:32:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:32:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:32:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 09:32:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:32:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:32:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 09:32:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:05,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65231457] [2022-07-12 09:32:05,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65231457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:32:05,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270178908] [2022-07-12 09:32:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:05,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:05,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:05,880 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 09:32:05,881 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 09:32:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:32:05,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:32:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 09:32:06,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:32:06,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270178908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:06,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:32:06,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:32:06,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299531216] [2022-07-12 09:32:06,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:06,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:32:06,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:06,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:32:06,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:06,017 INFO L87 Difference]: Start difference. First operand 21994 states and 32882 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:08,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:08,029 INFO L93 Difference]: Finished difference Result 62231 states and 95147 transitions. [2022-07-12 09:32:08,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:32:08,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-07-12 09:32:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:08,112 INFO L225 Difference]: With dead ends: 62231 [2022-07-12 09:32:08,112 INFO L226 Difference]: Without dead ends: 41878 [2022-07-12 09:32:08,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:08,145 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 347 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:08,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 659 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:32:08,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41878 states. [2022-07-12 09:32:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41878 to 41610. [2022-07-12 09:32:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41610 states, 36473 states have (on average 1.4563649823156857) internal successors, (53118), 36940 states have internal predecessors, (53118), 3134 states have call successors, (3134), 1701 states have call predecessors, (3134), 2001 states have return successors, (6264), 3000 states have call predecessors, (6264), 3131 states have call successors, (6264) [2022-07-12 09:32:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41610 states to 41610 states and 62516 transitions. [2022-07-12 09:32:10,647 INFO L78 Accepts]: Start accepts. Automaton has 41610 states and 62516 transitions. Word has length 147 [2022-07-12 09:32:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:10,647 INFO L495 AbstractCegarLoop]: Abstraction has 41610 states and 62516 transitions. [2022-07-12 09:32:10,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 41610 states and 62516 transitions. [2022-07-12 09:32:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 09:32:10,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:10,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:10,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 09:32:10,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:10,903 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:10,904 INFO L85 PathProgramCache]: Analyzing trace with hash 782359478, now seen corresponding path program 1 times [2022-07-12 09:32:10,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:10,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169381171] [2022-07-12 09:32:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:10,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:32:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:32:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:10,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:32:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:32:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 09:32:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:32:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:10,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:32:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 09:32:10,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:10,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169381171] [2022-07-12 09:32:10,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169381171] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:32:10,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462163068] [2022-07-12 09:32:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:10,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:10,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:11,002 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 09:32:11,003 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 09:32:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:11,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:32:11,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:32:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 09:32:11,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:32:11,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462163068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:11,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:32:11,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 09:32:11,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913830455] [2022-07-12 09:32:11,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:11,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:32:11,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:11,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:32:11,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:11,177 INFO L87 Difference]: Start difference. First operand 41610 states and 62516 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:15,540 INFO L93 Difference]: Finished difference Result 120227 states and 183561 transitions. [2022-07-12 09:32:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:32:15,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-07-12 09:32:15,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:15,746 INFO L225 Difference]: With dead ends: 120227 [2022-07-12 09:32:15,747 INFO L226 Difference]: Without dead ends: 80258 [2022-07-12 09:32:15,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:15,827 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 341 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:15,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:32:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80258 states. [2022-07-12 09:32:20,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80258 to 79726. [2022-07-12 09:32:20,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79726 states, 70029 states have (on average 1.4601665024489854) internal successors, (102254), 70950 states have internal predecessors, (102254), 5854 states have call successors, (5854), 3285 states have call predecessors, (5854), 3841 states have return successors, (11821), 5522 states have call predecessors, (11821), 5851 states have call successors, (11821) [2022-07-12 09:32:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79726 states to 79726 states and 119929 transitions. [2022-07-12 09:32:21,046 INFO L78 Accepts]: Start accepts. Automaton has 79726 states and 119929 transitions. Word has length 147 [2022-07-12 09:32:21,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:21,047 INFO L495 AbstractCegarLoop]: Abstraction has 79726 states and 119929 transitions. [2022-07-12 09:32:21,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:21,047 INFO L276 IsEmpty]: Start isEmpty. Operand 79726 states and 119929 transitions. [2022-07-12 09:32:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 09:32:21,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:21,104 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:21,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 09:32:21,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-12 09:32:21,304 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash -716116074, now seen corresponding path program 1 times [2022-07-12 09:32:21,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:21,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562458178] [2022-07-12 09:32:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:21,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 09:32:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:32:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 09:32:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:32:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 09:32:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 09:32:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:32:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 09:32:21,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:21,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562458178] [2022-07-12 09:32:21,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562458178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:32:21,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199949599] [2022-07-12 09:32:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:21,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:21,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:21,394 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:32:21,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 09:32:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:32:21,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:32:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 09:32:21,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:32:21,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199949599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:21,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:32:21,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-12 09:32:21,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318343862] [2022-07-12 09:32:21,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:21,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:32:21,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:21,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:32:21,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:21,499 INFO L87 Difference]: Start difference. First operand 79726 states and 119929 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:32:29,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:29,543 INFO L93 Difference]: Finished difference Result 231578 states and 350714 transitions. [2022-07-12 09:32:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:32:29,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 147 [2022-07-12 09:32:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:30,085 INFO L225 Difference]: With dead ends: 231578 [2022-07-12 09:32:30,085 INFO L226 Difference]: Without dead ends: 99114 [2022-07-12 09:32:30,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:30,253 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 231 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:30,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 998 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:32:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99114 states. [2022-07-12 09:32:35,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99114 to 99114. [2022-07-12 09:32:35,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99114 states, 87137 states have (on average 1.456935630099728) internal successors, (126953), 88186 states have internal predecessors, (126953), 7214 states have call successors, (7214), 4077 states have call predecessors, (7214), 4761 states have return successors, (14725), 6882 states have call predecessors, (14725), 7211 states have call successors, (14725) [2022-07-12 09:32:35,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99114 states to 99114 states and 148892 transitions. [2022-07-12 09:32:35,874 INFO L78 Accepts]: Start accepts. Automaton has 99114 states and 148892 transitions. Word has length 147 [2022-07-12 09:32:35,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:35,874 INFO L495 AbstractCegarLoop]: Abstraction has 99114 states and 148892 transitions. [2022-07-12 09:32:35,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 09:32:35,875 INFO L276 IsEmpty]: Start isEmpty. Operand 99114 states and 148892 transitions. [2022-07-12 09:32:35,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 09:32:35,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:35,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:35,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 09:32:36,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:36,148 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:36,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:36,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1706888851, now seen corresponding path program 1 times [2022-07-12 09:32:36,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:36,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800196857] [2022-07-12 09:32:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:32:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:32:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 09:32:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 09:32:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 09:32:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 09:32:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,212 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 09:32:36,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:36,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800196857] [2022-07-12 09:32:36,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800196857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:36,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:36,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:36,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733885496] [2022-07-12 09:32:36,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:36,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:36,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:36,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:36,214 INFO L87 Difference]: Start difference. First operand 99114 states and 148892 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 09:32:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:41,720 INFO L93 Difference]: Finished difference Result 100591 states and 150691 transitions. [2022-07-12 09:32:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:32:41,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-12 09:32:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:41,968 INFO L225 Difference]: With dead ends: 100591 [2022-07-12 09:32:41,968 INFO L226 Difference]: Without dead ends: 99215 [2022-07-12 09:32:42,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:32:42,006 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 355 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:42,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1429 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:32:42,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99215 states.