./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:49:42,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:49:42,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:49:42,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:49:42,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:49:42,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:49:42,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:49:42,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:49:42,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:49:42,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:49:42,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:49:42,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:49:42,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:49:42,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:49:42,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:49:42,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:49:42,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:49:42,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:49:42,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:49:42,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:49:42,814 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:49:42,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:49:42,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:49:42,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:49:42,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:49:42,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:49:42,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:49:42,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:49:42,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:49:42,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:49:42,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:49:42,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:49:42,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:49:42,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:49:42,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:49:42,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:49:42,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:49:42,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:49:42,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:49:42,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:49:42,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:49:42,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:49:42,842 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:49:42,873 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:49:42,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:49:42,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:49:42,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:49:42,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:49:42,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:49:42,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:49:42,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:49:42,876 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:49:42,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:49:42,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:49:42,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:49:42,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:49:42,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:49:42,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:49:42,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:49:42,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:49:42,879 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:49:42,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:49:42,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:49:42,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:49:42,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:49:42,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:49:42,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:49:42,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:49:42,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:49:42,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:49:42,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:49:42,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:49:42,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:49:42,888 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:49:42,888 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:49:42,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:49:42,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e [2022-07-22 20:49:43,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:49:43,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:49:43,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:49:43,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:49:43,171 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:49:43,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2022-07-22 20:49:43,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30de5da5/e2fd9cdda6834c7ab208fb855d0f16cd/FLAG2ca3d5630 [2022-07-22 20:49:43,766 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:49:43,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2022-07-22 20:49:43,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30de5da5/e2fd9cdda6834c7ab208fb855d0f16cd/FLAG2ca3d5630 [2022-07-22 20:49:44,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30de5da5/e2fd9cdda6834c7ab208fb855d0f16cd [2022-07-22 20:49:44,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:49:44,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:49:44,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:49:44,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:49:44,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:49:44,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1613eb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44, skipping insertion in model container [2022-07-22 20:49:44,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:49:44,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:49:44,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c[914,927] [2022-07-22 20:49:44,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c[7115,7128] [2022-07-22 20:49:44,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:49:44,593 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:49:44,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c[914,927] [2022-07-22 20:49:44,629 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c[7115,7128] [2022-07-22 20:49:44,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:49:44,712 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:49:44,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44 WrapperNode [2022-07-22 20:49:44,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:49:44,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:49:44,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:49:44,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:49:44,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,796 INFO L137 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1043 [2022-07-22 20:49:44,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:49:44,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:49:44,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:49:44,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:49:44,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:49:44,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:49:44,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:49:44,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:49:44,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (1/1) ... [2022-07-22 20:49:44,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:49:44,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:49:44,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:49:44,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:49:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:49:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:49:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:49:44,966 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:49:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:49:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:49:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:49:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:49:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:49:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:49:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:49:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:49:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:49:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:49:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:49:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:49:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:49:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:49:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:49:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:49:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:49:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:49:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:49:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:49:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:49:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:49:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:49:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:49:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:49:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:49:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:49:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:49:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-22 20:49:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-22 20:49:45,132 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:49:45,153 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:49:45,806 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:49:45,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:49:45,820 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-22 20:49:45,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:49:45 BoogieIcfgContainer [2022-07-22 20:49:45,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:49:45,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:49:45,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:49:45,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:49:45,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:49:44" (1/3) ... [2022-07-22 20:49:45,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31988d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:49:45, skipping insertion in model container [2022-07-22 20:49:45,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:49:44" (2/3) ... [2022-07-22 20:49:45,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31988d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:49:45, skipping insertion in model container [2022-07-22 20:49:45,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:49:45" (3/3) ... [2022-07-22 20:49:45,832 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.14.cil.c [2022-07-22 20:49:45,844 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:49:45,844 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:49:45,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:49:45,924 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@14afc401, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6084cd8f [2022-07-22 20:49:45,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:49:45,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 489 states, 429 states have (on average 1.6433566433566433) internal successors, (705), 437 states have internal predecessors, (705), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-22 20:49:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:49:45,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:45,946 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] [2022-07-22 20:49:45,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:45,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:45,954 INFO L85 PathProgramCache]: Analyzing trace with hash 956122995, now seen corresponding path program 1 times [2022-07-22 20:49:45,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:45,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266312724] [2022-07-22 20:49:45,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:46,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:46,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:46,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:46,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:46,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:46,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266312724] [2022-07-22 20:49:46,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266312724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:46,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:46,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:49:46,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316706549] [2022-07-22 20:49:46,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:46,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:49:46,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:49:46,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:49:46,443 INFO L87 Difference]: Start difference. First operand has 489 states, 429 states have (on average 1.6433566433566433) internal successors, (705), 437 states have internal predecessors, (705), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:49:47,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:47,614 INFO L93 Difference]: Finished difference Result 1084 states and 1736 transitions. [2022-07-22 20:49:47,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:49:47,616 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 [2022-07-22 20:49:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:47,639 INFO L225 Difference]: With dead ends: 1084 [2022-07-22 20:49:47,640 INFO L226 Difference]: Without dead ends: 613 [2022-07-22 20:49:47,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:49:47,649 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 1209 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:47,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 2488 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:49:47,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-22 20:49:47,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 574. [2022-07-22 20:49:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 497 states have (on average 1.529175050301811) internal successors, (760), 504 states have internal predecessors, (760), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-07-22 20:49:47,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 867 transitions. [2022-07-22 20:49:47,736 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 867 transitions. Word has length 65 [2022-07-22 20:49:47,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:47,736 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 867 transitions. [2022-07-22 20:49:47,736 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) [2022-07-22 20:49:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 867 transitions. [2022-07-22 20:49:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:49:47,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:47,749 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] [2022-07-22 20:49:47,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:49:47,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:47,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1359908946, now seen corresponding path program 1 times [2022-07-22 20:49:47,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:47,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060994886] [2022-07-22 20:49:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:47,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:47,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:47,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:47,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:47,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:47,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:47,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060994886] [2022-07-22 20:49:47,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060994886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:47,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:47,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:49:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060772636] [2022-07-22 20:49:47,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:47,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:49:47,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:47,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:49:47,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:49:47,881 INFO L87 Difference]: Start difference. First operand 574 states and 867 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:49:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:48,944 INFO L93 Difference]: Finished difference Result 921 states and 1344 transitions. [2022-07-22 20:49:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:49:48,945 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 [2022-07-22 20:49:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:48,949 INFO L225 Difference]: With dead ends: 921 [2022-07-22 20:49:48,950 INFO L226 Difference]: Without dead ends: 744 [2022-07-22 20:49:48,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-22 20:49:48,952 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1480 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:48,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 2717 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:49:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-22 20:49:48,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 670. [2022-07-22 20:49:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 573 states have (on average 1.5078534031413613) internal successors, (864), 582 states have internal predecessors, (864), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-22 20:49:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1001 transitions. [2022-07-22 20:49:48,997 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1001 transitions. Word has length 65 [2022-07-22 20:49:48,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:48,997 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1001 transitions. [2022-07-22 20:49:48,998 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) [2022-07-22 20:49:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1001 transitions. [2022-07-22 20:49:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:49:48,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:49,000 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] [2022-07-22 20:49:49,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:49:49,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:49,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:49,001 INFO L85 PathProgramCache]: Analyzing trace with hash -668677164, now seen corresponding path program 1 times [2022-07-22 20:49:49,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:49,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119163999] [2022-07-22 20:49:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:49,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:49,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:49,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:49,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:49,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119163999] [2022-07-22 20:49:49,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119163999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:49,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:49,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:49:49,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425238757] [2022-07-22 20:49:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:49,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:49:49,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:49:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:49:49,122 INFO L87 Difference]: Start difference. First operand 670 states and 1001 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:49:50,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:50,282 INFO L93 Difference]: Finished difference Result 971 states and 1415 transitions. [2022-07-22 20:49:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:49:50,283 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 [2022-07-22 20:49:50,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:50,287 INFO L225 Difference]: With dead ends: 971 [2022-07-22 20:49:50,287 INFO L226 Difference]: Without dead ends: 704 [2022-07-22 20:49:50,289 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 [2022-07-22 20:49:50,290 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 971 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:50,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2874 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:49:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-22 20:49:50,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 675. [2022-07-22 20:49:50,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 577 states have (on average 1.5008665511265165) internal successors, (866), 586 states have internal predecessors, (866), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2022-07-22 20:49:50,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1004 transitions. [2022-07-22 20:49:50,347 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1004 transitions. Word has length 65 [2022-07-22 20:49:50,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:50,347 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1004 transitions. [2022-07-22 20:49:50,348 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) [2022-07-22 20:49:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1004 transitions. [2022-07-22 20:49:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:49:50,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:50,352 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] [2022-07-22 20:49:50,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:49:50,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:50,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1698036462, now seen corresponding path program 1 times [2022-07-22 20:49:50,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:50,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159475525] [2022-07-22 20:49:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:50,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:50,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:50,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159475525] [2022-07-22 20:49:50,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159475525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:50,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:50,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:49:50,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876885296] [2022-07-22 20:49:50,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:50,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:49:50,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:50,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:49:50,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:49:50,538 INFO L87 Difference]: Start difference. First operand 675 states and 1004 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:49:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:52,372 INFO L93 Difference]: Finished difference Result 1997 states and 2800 transitions. [2022-07-22 20:49:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:49:52,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-22 20:49:52,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:52,380 INFO L225 Difference]: With dead ends: 1997 [2022-07-22 20:49:52,380 INFO L226 Difference]: Without dead ends: 1707 [2022-07-22 20:49:52,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:49:52,383 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 4059 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4073 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:52,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4073 Valid, 2605 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:49:52,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2022-07-22 20:49:52,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1576. [2022-07-22 20:49:52,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1292 states have (on average 1.3970588235294117) internal successors, (1805), 1316 states have internal predecessors, (1805), 152 states have call successors, (152), 112 states have call predecessors, (152), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2022-07-22 20:49:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2145 transitions. [2022-07-22 20:49:52,449 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2145 transitions. Word has length 65 [2022-07-22 20:49:52,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:52,450 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2145 transitions. [2022-07-22 20:49:52,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:49:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2145 transitions. [2022-07-22 20:49:52,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:49:52,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:52,452 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] [2022-07-22 20:49:52,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:49:52,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2104827032, now seen corresponding path program 1 times [2022-07-22 20:49:52,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:52,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362037932] [2022-07-22 20:49:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:52,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:52,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:52,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362037932] [2022-07-22 20:49:52,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362037932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:52,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:52,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:49:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315166391] [2022-07-22 20:49:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:52,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:49:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:52,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:49:52,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:49:52,569 INFO L87 Difference]: Start difference. First operand 1576 states and 2145 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:49:53,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:53,675 INFO L93 Difference]: Finished difference Result 2867 states and 3818 transitions. [2022-07-22 20:49:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:49:53,676 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 [2022-07-22 20:49:53,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:53,704 INFO L225 Difference]: With dead ends: 2867 [2022-07-22 20:49:53,705 INFO L226 Difference]: Without dead ends: 1682 [2022-07-22 20:49:53,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:49:53,713 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 652 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:53,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 3200 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:49:53,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-07-22 20:49:53,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1606. [2022-07-22 20:49:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1316 states have (on average 1.3837386018237081) internal successors, (1821), 1340 states have internal predecessors, (1821), 152 states have call successors, (152), 112 states have call predecessors, (152), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2022-07-22 20:49:53,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2167 transitions. [2022-07-22 20:49:53,779 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2167 transitions. Word has length 65 [2022-07-22 20:49:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:53,780 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2167 transitions. [2022-07-22 20:49:53,780 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) [2022-07-22 20:49:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2167 transitions. [2022-07-22 20:49:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:49:53,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:53,781 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] [2022-07-22 20:49:53,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:49:53,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash -718623638, now seen corresponding path program 1 times [2022-07-22 20:49:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:53,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913019819] [2022-07-22 20:49:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:53,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:53,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:53,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:53,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:53,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:53,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:53,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913019819] [2022-07-22 20:49:53,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913019819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:53,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:53,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:49:53,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360719006] [2022-07-22 20:49:53,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:53,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:49:53,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:53,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:49:53,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:49:53,888 INFO L87 Difference]: Start difference. First operand 1606 states and 2167 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:49:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:54,961 INFO L93 Difference]: Finished difference Result 2861 states and 3714 transitions. [2022-07-22 20:49:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:49:54,962 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 [2022-07-22 20:49:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:54,970 INFO L225 Difference]: With dead ends: 2861 [2022-07-22 20:49:54,970 INFO L226 Difference]: Without dead ends: 1869 [2022-07-22 20:49:54,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-22 20:49:54,976 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1439 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:54,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2466 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:49:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-07-22 20:49:55,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1548. [2022-07-22 20:49:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1274 states have (on average 1.3814756671899528) internal successors, (1760), 1293 states have internal predecessors, (1760), 146 states have call successors, (146), 107 states have call predecessors, (146), 126 states have return successors, (179), 149 states have call predecessors, (179), 142 states have call successors, (179) [2022-07-22 20:49:55,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2085 transitions. [2022-07-22 20:49:55,042 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2085 transitions. Word has length 65 [2022-07-22 20:49:55,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:55,043 INFO L495 AbstractCegarLoop]: Abstraction has 1548 states and 2085 transitions. [2022-07-22 20:49:55,043 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) [2022-07-22 20:49:55,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2085 transitions. [2022-07-22 20:49:55,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:49:55,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:55,044 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] [2022-07-22 20:49:55,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:49:55,045 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:55,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:55,045 INFO L85 PathProgramCache]: Analyzing trace with hash -852637144, now seen corresponding path program 1 times [2022-07-22 20:49:55,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:55,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189576822] [2022-07-22 20:49:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:55,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:55,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:55,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189576822] [2022-07-22 20:49:55,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189576822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:55,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:55,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:55,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092119552] [2022-07-22 20:49:55,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:55,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:55,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:55,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:55,134 INFO L87 Difference]: Start difference. First operand 1548 states and 2085 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:49:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:55,687 INFO L93 Difference]: Finished difference Result 3887 states and 5046 transitions. [2022-07-22 20:49:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:49:55,688 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 [2022-07-22 20:49:55,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:55,702 INFO L225 Difference]: With dead ends: 3887 [2022-07-22 20:49:55,703 INFO L226 Difference]: Without dead ends: 2731 [2022-07-22 20:49:55,706 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 [2022-07-22 20:49:55,708 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1410 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:55,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 2079 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:49:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2022-07-22 20:49:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2611. [2022-07-22 20:49:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2094 states have (on average 1.3142311365807067) internal successors, (2752), 2130 states have internal predecessors, (2752), 265 states have call successors, (265), 206 states have call predecessors, (265), 250 states have return successors, (370), 277 states have call predecessors, (370), 261 states have call successors, (370) [2022-07-22 20:49:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3387 transitions. [2022-07-22 20:49:55,821 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3387 transitions. Word has length 65 [2022-07-22 20:49:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:55,821 INFO L495 AbstractCegarLoop]: Abstraction has 2611 states and 3387 transitions. [2022-07-22 20:49:55,822 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) [2022-07-22 20:49:55,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3387 transitions. [2022-07-22 20:49:55,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:49:55,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:55,839 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] [2022-07-22 20:49:55,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:49:55,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:55,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:55,841 INFO L85 PathProgramCache]: Analyzing trace with hash 20568174, now seen corresponding path program 1 times [2022-07-22 20:49:55,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:55,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123240731] [2022-07-22 20:49:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:55,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:55,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:55,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123240731] [2022-07-22 20:49:55,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123240731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:55,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:55,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:49:55,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239443582] [2022-07-22 20:49:55,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:55,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:49:55,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:49:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:49:55,944 INFO L87 Difference]: Start difference. First operand 2611 states and 3387 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:49:56,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:56,646 INFO L93 Difference]: Finished difference Result 5927 states and 7532 transitions. [2022-07-22 20:49:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:49:56,647 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 [2022-07-22 20:49:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:56,667 INFO L225 Difference]: With dead ends: 5927 [2022-07-22 20:49:56,667 INFO L226 Difference]: Without dead ends: 3713 [2022-07-22 20:49:56,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:49:56,674 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 828 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:56,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2066 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:49:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-07-22 20:49:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3445. [2022-07-22 20:49:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 2742 states have (on average 1.2935813274981764) internal successors, (3547), 2783 states have internal predecessors, (3547), 357 states have call successors, (357), 286 states have call predecessors, (357), 344 states have return successors, (484), 378 states have call predecessors, (484), 353 states have call successors, (484) [2022-07-22 20:49:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4388 transitions. [2022-07-22 20:49:56,843 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4388 transitions. Word has length 66 [2022-07-22 20:49:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:56,843 INFO L495 AbstractCegarLoop]: Abstraction has 3445 states and 4388 transitions. [2022-07-22 20:49:56,844 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) [2022-07-22 20:49:56,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4388 transitions. [2022-07-22 20:49:56,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 20:49:56,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:56,845 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] [2022-07-22 20:49:56,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:49:56,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:56,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1226736109, now seen corresponding path program 1 times [2022-07-22 20:49:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:56,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455331249] [2022-07-22 20:49:56,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:56,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:56,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:56,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:56,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455331249] [2022-07-22 20:49:56,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455331249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:56,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:56,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:49:56,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546774020] [2022-07-22 20:49:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:56,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:49:56,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:49:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:49:56,919 INFO L87 Difference]: Start difference. First operand 3445 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:49:57,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:57,453 INFO L93 Difference]: Finished difference Result 7317 states and 9162 transitions. [2022-07-22 20:49:57,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:49:57,454 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 [2022-07-22 20:49:57,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:57,476 INFO L225 Difference]: With dead ends: 7317 [2022-07-22 20:49:57,477 INFO L226 Difference]: Without dead ends: 4267 [2022-07-22 20:49:57,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:49:57,486 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1381 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:57,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1813 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:49:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-07-22 20:49:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 3999. [2022-07-22 20:49:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3999 states, 3182 states have (on average 1.2844123192960402) internal successors, (4087), 3227 states have internal predecessors, (4087), 413 states have call successors, (413), 336 states have call predecessors, (413), 402 states have return successors, (557), 438 states have call predecessors, (557), 409 states have call successors, (557) [2022-07-22 20:49:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 5057 transitions. [2022-07-22 20:49:57,683 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 5057 transitions. Word has length 72 [2022-07-22 20:49:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:57,684 INFO L495 AbstractCegarLoop]: Abstraction has 3999 states and 5057 transitions. [2022-07-22 20:49:57,685 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) [2022-07-22 20:49:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 5057 transitions. [2022-07-22 20:49:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 20:49:57,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:57,686 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] [2022-07-22 20:49:57,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:49:57,687 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:57,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:57,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1142832314, now seen corresponding path program 1 times [2022-07-22 20:49:57,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:57,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29603649] [2022-07-22 20:49:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:57,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:57,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:57,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29603649] [2022-07-22 20:49:57,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29603649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:57,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:57,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588651299] [2022-07-22 20:49:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:57,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:57,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:57,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:57,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:57,778 INFO L87 Difference]: Start difference. First operand 3999 states and 5057 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:49:58,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:58,338 INFO L93 Difference]: Finished difference Result 5085 states and 6352 transitions. [2022-07-22 20:49:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:49:58,339 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 [2022-07-22 20:49:58,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:58,360 INFO L225 Difference]: With dead ends: 5085 [2022-07-22 20:49:58,361 INFO L226 Difference]: Without dead ends: 5082 [2022-07-22 20:49:58,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:49:58,364 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 2428 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:58,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2438 Valid, 1450 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:49:58,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-07-22 20:49:58,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 4461. [2022-07-22 20:49:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4461 states, 3537 states have (on average 1.2731128074639526) internal successors, (4503), 3585 states have internal predecessors, (4503), 463 states have call successors, (463), 380 states have call predecessors, (463), 459 states have return successors, (634), 498 states have call predecessors, (634), 460 states have call successors, (634) [2022-07-22 20:49:58,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 5600 transitions. [2022-07-22 20:49:58,602 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 5600 transitions. Word has length 73 [2022-07-22 20:49:58,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:58,602 INFO L495 AbstractCegarLoop]: Abstraction has 4461 states and 5600 transitions. [2022-07-22 20:49:58,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:49:58,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 5600 transitions. [2022-07-22 20:49:58,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 20:49:58,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:58,605 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] [2022-07-22 20:49:58,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:49:58,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:58,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:58,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1069513385, now seen corresponding path program 1 times [2022-07-22 20:49:58,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:58,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611693244] [2022-07-22 20:49:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:58,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:58,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:58,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:58,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:58,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:58,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:58,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:58,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611693244] [2022-07-22 20:49:58,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611693244] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:49:58,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524117164] [2022-07-22 20:49:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:58,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:49:58,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:49:58,724 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) [2022-07-22 20:49:58,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:49:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:58,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 20:49:58,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:49:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:59,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:49:59,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:59,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524117164] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:49:59,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:49:59,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-22 20:49:59,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088163782] [2022-07-22 20:49:59,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:49:59,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:49:59,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:59,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:49:59,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:49:59,313 INFO L87 Difference]: Start difference. First operand 4461 states and 5600 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 20:50:01,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:01,185 INFO L93 Difference]: Finished difference Result 8779 states and 10809 transitions. [2022-07-22 20:50:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 20:50:01,186 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 [2022-07-22 20:50:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:01,228 INFO L225 Difference]: With dead ends: 8779 [2022-07-22 20:50:01,228 INFO L226 Difference]: Without dead ends: 8776 [2022-07-22 20:50:01,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-22 20:50:01,233 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 2377 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:01,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2441 Valid, 2516 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:50:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2022-07-22 20:50:01,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 7878. [2022-07-22 20:50:01,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7878 states, 6212 states have (on average 1.2533805537669027) internal successors, (7786), 6295 states have internal predecessors, (7786), 822 states have call successors, (822), 694 states have call predecessors, (822), 842 states have return successors, (1135), 891 states have call predecessors, (1135), 819 states have call successors, (1135) [2022-07-22 20:50:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 9743 transitions. [2022-07-22 20:50:01,679 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 9743 transitions. Word has length 74 [2022-07-22 20:50:01,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:01,679 INFO L495 AbstractCegarLoop]: Abstraction has 7878 states and 9743 transitions. [2022-07-22 20:50:01,679 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) [2022-07-22 20:50:01,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 9743 transitions. [2022-07-22 20:50:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 20:50:01,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:01,682 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] [2022-07-22 20:50:01,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:50:01,895 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 [2022-07-22 20:50:01,896 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:01,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:01,896 INFO L85 PathProgramCache]: Analyzing trace with hash 850950662, now seen corresponding path program 2 times [2022-07-22 20:50:01,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:01,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830592685] [2022-07-22 20:50:01,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:01,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:01,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:50:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:50:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:50:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:50:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:01,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:01,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:01,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830592685] [2022-07-22 20:50:01,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830592685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:01,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:01,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:50:01,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535565843] [2022-07-22 20:50:01,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:01,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:50:01,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:01,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:50:01,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:50:01,953 INFO L87 Difference]: Start difference. First operand 7878 states and 9743 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:50:02,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:02,570 INFO L93 Difference]: Finished difference Result 10472 states and 12952 transitions. [2022-07-22 20:50:02,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:50:02,571 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 [2022-07-22 20:50:02,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:02,585 INFO L225 Difference]: With dead ends: 10472 [2022-07-22 20:50:02,585 INFO L226 Difference]: Without dead ends: 4298 [2022-07-22 20:50:02,595 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 [2022-07-22 20:50:02,595 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1318 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:02,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1870 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:50:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2022-07-22 20:50:02,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 3290. [2022-07-22 20:50:02,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 2630 states have (on average 1.2688212927756655) internal successors, (3337), 2659 states have internal predecessors, (3337), 341 states have call successors, (341), 276 states have call predecessors, (341), 317 states have return successors, (434), 357 states have call predecessors, (434), 338 states have call successors, (434) [2022-07-22 20:50:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4112 transitions. [2022-07-22 20:50:02,765 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4112 transitions. Word has length 77 [2022-07-22 20:50:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:02,765 INFO L495 AbstractCegarLoop]: Abstraction has 3290 states and 4112 transitions. [2022-07-22 20:50:02,765 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) [2022-07-22 20:50:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4112 transitions. [2022-07-22 20:50:02,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 20:50:02,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:02,768 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] [2022-07-22 20:50:02,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:50:02,769 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:02,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:02,769 INFO L85 PathProgramCache]: Analyzing trace with hash -416080695, now seen corresponding path program 1 times [2022-07-22 20:50:02,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:02,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473269198] [2022-07-22 20:50:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:02,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:50:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:02,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:50:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:02,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:50:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:50:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:02,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:50:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:50:02,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:02,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473269198] [2022-07-22 20:50:02,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473269198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:02,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:02,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:50:02,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696781024] [2022-07-22 20:50:02,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:02,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:50:02,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:02,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:50:02,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:50:02,850 INFO L87 Difference]: Start difference. First operand 3290 states and 4112 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:50:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:03,987 INFO L93 Difference]: Finished difference Result 9074 states and 11109 transitions. [2022-07-22 20:50:03,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 20:50:03,987 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 [2022-07-22 20:50:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:04,013 INFO L225 Difference]: With dead ends: 9074 [2022-07-22 20:50:04,013 INFO L226 Difference]: Without dead ends: 5376 [2022-07-22 20:50:04,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-22 20:50:04,024 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 1894 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:04,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 2208 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:50:04,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2022-07-22 20:50:04,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 5116. [2022-07-22 20:50:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5116 states, 4021 states have (on average 1.2302909723949267) internal successors, (4947), 4087 states have internal predecessors, (4947), 541 states have call successors, (541), 448 states have call predecessors, (541), 552 states have return successors, (784), 583 states have call predecessors, (784), 538 states have call successors, (784) [2022-07-22 20:50:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 6272 transitions. [2022-07-22 20:50:04,338 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 6272 transitions. Word has length 84 [2022-07-22 20:50:04,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:04,338 INFO L495 AbstractCegarLoop]: Abstraction has 5116 states and 6272 transitions. [2022-07-22 20:50:04,339 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) [2022-07-22 20:50:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 6272 transitions. [2022-07-22 20:50:04,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 20:50:04,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:04,341 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] [2022-07-22 20:50:04,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:50:04,341 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:04,342 INFO L85 PathProgramCache]: Analyzing trace with hash 322850660, now seen corresponding path program 1 times [2022-07-22 20:50:04,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:04,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173895624] [2022-07-22 20:50:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:04,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:04,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:50:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:50:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:04,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:50:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:50:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:50:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 20:50:04,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:04,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173895624] [2022-07-22 20:50:04,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173895624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:04,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:04,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:50:04,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051158056] [2022-07-22 20:50:04,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:50:04,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:50:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:50:04,427 INFO L87 Difference]: Start difference. First operand 5116 states and 6272 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:50:05,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:05,853 INFO L93 Difference]: Finished difference Result 8476 states and 10290 transitions. [2022-07-22 20:50:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 20:50:05,854 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 [2022-07-22 20:50:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:05,868 INFO L225 Difference]: With dead ends: 8476 [2022-07-22 20:50:05,869 INFO L226 Difference]: Without dead ends: 4277 [2022-07-22 20:50:05,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-22 20:50:05,879 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1953 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:05,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 2569 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:50:05,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2022-07-22 20:50:06,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3856. [2022-07-22 20:50:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3027 states have (on average 1.2226627023455567) internal successors, (3701), 3081 states have internal predecessors, (3701), 406 states have call successors, (406), 330 states have call predecessors, (406), 421 states have return successors, (553), 447 states have call predecessors, (553), 403 states have call successors, (553) [2022-07-22 20:50:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 4660 transitions. [2022-07-22 20:50:06,067 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 4660 transitions. Word has length 93 [2022-07-22 20:50:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:06,068 INFO L495 AbstractCegarLoop]: Abstraction has 3856 states and 4660 transitions. [2022-07-22 20:50:06,068 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) [2022-07-22 20:50:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 4660 transitions. [2022-07-22 20:50:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:50:06,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:06,071 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] [2022-07-22 20:50:06,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:50:06,072 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1648604991, now seen corresponding path program 1 times [2022-07-22 20:50:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:06,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935904191] [2022-07-22 20:50:06,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:06,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:50:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:50:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:50:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:50:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:50:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:50:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:50:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 20:50:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:50:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:50:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 20:50:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 20:50:06,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:06,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935904191] [2022-07-22 20:50:06,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935904191] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:50:06,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305309468] [2022-07-22 20:50:06,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:06,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:50:06,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:50:06,165 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) [2022-07-22 20:50:06,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:50:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 20:50:06,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:50:06,336 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 20:50:06,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:50:06,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305309468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:06,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:50:06,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-22 20:50:06,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35654463] [2022-07-22 20:50:06,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:06,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:50:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:50:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 20:50:06,338 INFO L87 Difference]: Start difference. First operand 3856 states and 4660 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:50:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:06,490 INFO L93 Difference]: Finished difference Result 5731 states and 6899 transitions. [2022-07-22 20:50:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:06,491 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 [2022-07-22 20:50:06,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:06,497 INFO L225 Difference]: With dead ends: 5731 [2022-07-22 20:50:06,497 INFO L226 Difference]: Without dead ends: 2272 [2022-07-22 20:50:06,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:50:06,504 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 34 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:06,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3620 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:50:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2022-07-22 20:50:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2150. [2022-07-22 20:50:06,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1767 states have (on average 1.2512733446519524) internal successors, (2211), 1784 states have internal predecessors, (2211), 195 states have call successors, (195), 144 states have call predecessors, (195), 186 states have return successors, (260), 222 states have call predecessors, (260), 192 states have call successors, (260) [2022-07-22 20:50:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2666 transitions. [2022-07-22 20:50:06,602 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2666 transitions. Word has length 145 [2022-07-22 20:50:06,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:06,603 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 2666 transitions. [2022-07-22 20:50:06,603 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) [2022-07-22 20:50:06,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2666 transitions. [2022-07-22 20:50:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 20:50:06,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:06,605 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] [2022-07-22 20:50:06,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:50:06,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 20:50:06,828 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:06,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2137728743, now seen corresponding path program 1 times [2022-07-22 20:50:06,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:06,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023662885] [2022-07-22 20:50:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:50:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:50:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:50:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:50:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:50:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 20:50:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 20:50:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 20:50:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 20:50:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 20:50:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 20:50:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:06,895 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 20:50:06,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:06,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023662885] [2022-07-22 20:50:06,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023662885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:06,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:06,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:50:06,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102539309] [2022-07-22 20:50:06,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:06,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:50:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:50:06,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:50:06,897 INFO L87 Difference]: Start difference. First operand 2150 states and 2666 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 20:50:07,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:07,395 INFO L93 Difference]: Finished difference Result 2198 states and 2716 transitions. [2022-07-22 20:50:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:07,395 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 [2022-07-22 20:50:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:07,400 INFO L225 Difference]: With dead ends: 2198 [2022-07-22 20:50:07,400 INFO L226 Difference]: Without dead ends: 1824 [2022-07-22 20:50:07,402 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 [2022-07-22 20:50:07,402 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1068 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:07,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1669 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:50:07,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-07-22 20:50:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1779. [2022-07-22 20:50:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1480 states have (on average 1.2736486486486487) internal successors, (1885), 1494 states have internal predecessors, (1885), 154 states have call successors, (154), 109 states have call predecessors, (154), 143 states have return successors, (205), 176 states have call predecessors, (205), 151 states have call successors, (205) [2022-07-22 20:50:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2244 transitions. [2022-07-22 20:50:07,492 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2244 transitions. Word has length 147 [2022-07-22 20:50:07,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:07,493 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2244 transitions. [2022-07-22 20:50:07,493 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) [2022-07-22 20:50:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2244 transitions. [2022-07-22 20:50:07,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 20:50:07,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:07,496 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] [2022-07-22 20:50:07,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:50:07,496 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2127164153, now seen corresponding path program 1 times [2022-07-22 20:50:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:07,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820371917] [2022-07-22 20:50:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:07,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:50:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:50:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:50:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:50:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:50:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:50:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 20:50:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:50:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 20:50:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 20:50:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 20:50:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,618 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 20:50:07,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:07,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820371917] [2022-07-22 20:50:07,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820371917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:07,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:07,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:07,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651784351] [2022-07-22 20:50:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:07,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:07,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:07,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:07,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:07,621 INFO L87 Difference]: Start difference. First operand 1779 states and 2244 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 20:50:08,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:08,340 INFO L93 Difference]: Finished difference Result 3045 states and 3743 transitions. [2022-07-22 20:50:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:50:08,340 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 [2022-07-22 20:50:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:08,346 INFO L225 Difference]: With dead ends: 3045 [2022-07-22 20:50:08,346 INFO L226 Difference]: Without dead ends: 1752 [2022-07-22 20:50:08,348 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 [2022-07-22 20:50:08,349 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 681 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:08,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 2501 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:50:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2022-07-22 20:50:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1668. [2022-07-22 20:50:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1393 states have (on average 1.2835606604450827) internal successors, (1788), 1407 states have internal predecessors, (1788), 142 states have call successors, (142), 99 states have call predecessors, (142), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2022-07-22 20:50:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2117 transitions. [2022-07-22 20:50:08,430 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2117 transitions. Word has length 159 [2022-07-22 20:50:08,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:08,431 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2117 transitions. [2022-07-22 20:50:08,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 20:50:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2117 transitions. [2022-07-22 20:50:08,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 20:50:08,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:08,434 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:08,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:50:08,434 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1961116033, now seen corresponding path program 1 times [2022-07-22 20:50:08,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:08,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109847168] [2022-07-22 20:50:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:08,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:50:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:50:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:50:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:50:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:50:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:50:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 20:50:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 20:50:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:50:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:50:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 20:50:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 20:50:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:50:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 20:50:08,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:08,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109847168] [2022-07-22 20:50:08,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109847168] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:50:08,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554213187] [2022-07-22 20:50:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:08,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:50:08,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:50:08,572 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) [2022-07-22 20:50:08,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 20:50:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 20:50:08,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:50:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 20:50:08,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:50:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 20:50:09,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554213187] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:50:09,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:50:09,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-22 20:50:09,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014686554] [2022-07-22 20:50:09,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:50:09,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 20:50:09,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 20:50:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:50:09,094 INFO L87 Difference]: Start difference. First operand 1668 states and 2117 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-22 20:50:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:10,407 INFO L93 Difference]: Finished difference Result 3404 states and 4256 transitions. [2022-07-22 20:50:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 20:50:10,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-22 20:50:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:10,414 INFO L225 Difference]: With dead ends: 3404 [2022-07-22 20:50:10,414 INFO L226 Difference]: Without dead ends: 2059 [2022-07-22 20:50:10,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-22 20:50:10,418 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 2456 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:10,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 2044 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:50:10,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-07-22 20:50:10,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1946. [2022-07-22 20:50:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1596 states have (on average 1.2474937343358397) internal successors, (1991), 1611 states have internal predecessors, (1991), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-22 20:50:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2429 transitions. [2022-07-22 20:50:10,538 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2429 transitions. Word has length 162 [2022-07-22 20:50:10,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:10,539 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2429 transitions. [2022-07-22 20:50:10,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-22 20:50:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2429 transitions. [2022-07-22 20:50:10,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:10,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:10,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:10,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 20:50:10,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 20:50:10,756 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1484709716, now seen corresponding path program 1 times [2022-07-22 20:50:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:10,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101890211] [2022-07-22 20:50:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:10,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:10,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:10,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:10,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101890211] [2022-07-22 20:50:10,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101890211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:10,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:10,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:50:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085434663] [2022-07-22 20:50:10,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:50:10,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:50:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:50:10,870 INFO L87 Difference]: Start difference. First operand 1946 states and 2429 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:12,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:12,431 INFO L93 Difference]: Finished difference Result 2461 states and 3263 transitions. [2022-07-22 20:50:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:12,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:12,436 INFO L225 Difference]: With dead ends: 2461 [2022-07-22 20:50:12,436 INFO L226 Difference]: Without dead ends: 2088 [2022-07-22 20:50:12,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:50:12,438 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1139 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:12,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 1356 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:50:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2022-07-22 20:50:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1946. [2022-07-22 20:50:12,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1596 states have (on average 1.2468671679197996) internal successors, (1990), 1611 states have internal predecessors, (1990), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-22 20:50:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2428 transitions. [2022-07-22 20:50:12,584 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2428 transitions. Word has length 179 [2022-07-22 20:50:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:12,585 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2428 transitions. [2022-07-22 20:50:12,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2428 transitions. [2022-07-22 20:50:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:12,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:12,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:12,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:50:12,588 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash -794878226, now seen corresponding path program 1 times [2022-07-22 20:50:12,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:12,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654639710] [2022-07-22 20:50:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:12,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:12,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:12,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:12,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654639710] [2022-07-22 20:50:12,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654639710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:12,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:12,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:50:12,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256490087] [2022-07-22 20:50:12,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:12,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:50:12,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:12,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:50:12,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:50:12,699 INFO L87 Difference]: Start difference. First operand 1946 states and 2428 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:14,184 INFO L93 Difference]: Finished difference Result 2453 states and 3246 transitions. [2022-07-22 20:50:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:14,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:14,192 INFO L225 Difference]: With dead ends: 2453 [2022-07-22 20:50:14,192 INFO L226 Difference]: Without dead ends: 2088 [2022-07-22 20:50:14,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:50:14,194 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 1130 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:14,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1354 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:50:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2022-07-22 20:50:14,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1946. [2022-07-22 20:50:14,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1596 states have (on average 1.2462406015037595) internal successors, (1989), 1611 states have internal predecessors, (1989), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-22 20:50:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2427 transitions. [2022-07-22 20:50:14,352 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2427 transitions. Word has length 179 [2022-07-22 20:50:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:14,353 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2427 transitions. [2022-07-22 20:50:14,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2427 transitions. [2022-07-22 20:50:14,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:14,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:14,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:14,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:50:14,355 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:14,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:14,356 INFO L85 PathProgramCache]: Analyzing trace with hash -8880336, now seen corresponding path program 1 times [2022-07-22 20:50:14,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:14,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569163689] [2022-07-22 20:50:14,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:14,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:14,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:14,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:14,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:14,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:14,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:14,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569163689] [2022-07-22 20:50:14,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569163689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:14,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:14,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:50:14,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529728875] [2022-07-22 20:50:14,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:14,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:50:14,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:14,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:50:14,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:50:14,494 INFO L87 Difference]: Start difference. First operand 1946 states and 2427 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:17,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:17,100 INFO L93 Difference]: Finished difference Result 2972 states and 4090 transitions. [2022-07-22 20:50:17,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:50:17,101 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:17,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:17,107 INFO L225 Difference]: With dead ends: 2972 [2022-07-22 20:50:17,107 INFO L226 Difference]: Without dead ends: 2610 [2022-07-22 20:50:17,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:50:17,109 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 1785 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:17,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 1947 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 20:50:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2022-07-22 20:50:17,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2325. [2022-07-22 20:50:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 1947 states have (on average 1.310220852593734) internal successors, (2551), 1963 states have internal predecessors, (2551), 203 states have call successors, (203), 143 states have call predecessors, (203), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2022-07-22 20:50:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3034 transitions. [2022-07-22 20:50:17,288 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3034 transitions. Word has length 179 [2022-07-22 20:50:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:17,288 INFO L495 AbstractCegarLoop]: Abstraction has 2325 states and 3034 transitions. [2022-07-22 20:50:17,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3034 transitions. [2022-07-22 20:50:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:17,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:17,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:17,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:50:17,291 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:17,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1394620116, now seen corresponding path program 1 times [2022-07-22 20:50:17,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:17,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369767711] [2022-07-22 20:50:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:17,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:17,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:17,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:17,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369767711] [2022-07-22 20:50:17,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369767711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:17,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:17,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578355288] [2022-07-22 20:50:17,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:17,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:17,426 INFO L87 Difference]: Start difference. First operand 2325 states and 3034 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:20,646 INFO L93 Difference]: Finished difference Result 3893 states and 5582 transitions. [2022-07-22 20:50:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:50:20,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:20,656 INFO L225 Difference]: With dead ends: 3893 [2022-07-22 20:50:20,656 INFO L226 Difference]: Without dead ends: 3152 [2022-07-22 20:50:20,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:50:20,660 INFO L413 NwaCegarLoop]: 1132 mSDtfsCounter, 1817 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:20,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 3256 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 20:50:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-07-22 20:50:20,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 2678. [2022-07-22 20:50:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2272 states have (on average 1.3472711267605635) internal successors, (3061), 2289 states have internal predecessors, (3061), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-22 20:50:20,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3588 transitions. [2022-07-22 20:50:20,869 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3588 transitions. Word has length 179 [2022-07-22 20:50:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:20,870 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3588 transitions. [2022-07-22 20:50:20,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3588 transitions. [2022-07-22 20:50:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:20,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:20,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:20,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:50:20,873 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:20,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2005889174, now seen corresponding path program 1 times [2022-07-22 20:50:20,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:20,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602701774] [2022-07-22 20:50:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:20,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:20,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:20,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:21,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:21,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602701774] [2022-07-22 20:50:21,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602701774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:21,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:21,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:21,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706470959] [2022-07-22 20:50:21,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:21,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:21,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:21,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:21,027 INFO L87 Difference]: Start difference. First operand 2678 states and 3588 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:22,671 INFO L93 Difference]: Finished difference Result 4262 states and 6174 transitions. [2022-07-22 20:50:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:22,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:22,680 INFO L225 Difference]: With dead ends: 4262 [2022-07-22 20:50:22,680 INFO L226 Difference]: Without dead ends: 3168 [2022-07-22 20:50:22,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:50:22,684 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1564 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:22,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 1672 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:50:22,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2022-07-22 20:50:22,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 2678. [2022-07-22 20:50:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2272 states have (on average 1.345950704225352) internal successors, (3058), 2289 states have internal predecessors, (3058), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-22 20:50:22,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3585 transitions. [2022-07-22 20:50:22,907 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3585 transitions. Word has length 179 [2022-07-22 20:50:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:22,907 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3585 transitions. [2022-07-22 20:50:22,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3585 transitions. [2022-07-22 20:50:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:22,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:22,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:22,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:50:22,910 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash 883886444, now seen corresponding path program 1 times [2022-07-22 20:50:22,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:22,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956046584] [2022-07-22 20:50:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:22,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:23,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:23,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:23,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956046584] [2022-07-22 20:50:23,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956046584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:23,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:23,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:23,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112631092] [2022-07-22 20:50:23,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:23,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:23,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:23,038 INFO L87 Difference]: Start difference. First operand 2678 states and 3585 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:24,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:24,899 INFO L93 Difference]: Finished difference Result 4258 states and 6157 transitions. [2022-07-22 20:50:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:24,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:24,912 INFO L225 Difference]: With dead ends: 4258 [2022-07-22 20:50:24,912 INFO L226 Difference]: Without dead ends: 3164 [2022-07-22 20:50:24,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:50:24,917 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 1343 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:24,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1918 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 20:50:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-07-22 20:50:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2678. [2022-07-22 20:50:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2272 states have (on average 1.3446302816901408) internal successors, (3055), 2289 states have internal predecessors, (3055), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-22 20:50:25,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3582 transitions. [2022-07-22 20:50:25,147 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3582 transitions. Word has length 179 [2022-07-22 20:50:25,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:25,148 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3582 transitions. [2022-07-22 20:50:25,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:25,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3582 transitions. [2022-07-22 20:50:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:25,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:25,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:25,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 20:50:25,152 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1516746966, now seen corresponding path program 1 times [2022-07-22 20:50:25,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:25,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648742479] [2022-07-22 20:50:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:25,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:25,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:25,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:25,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:25,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:25,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648742479] [2022-07-22 20:50:25,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648742479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:25,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:25,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:25,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200625385] [2022-07-22 20:50:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:25,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:25,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:25,313 INFO L87 Difference]: Start difference. First operand 2678 states and 3582 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:28,519 INFO L93 Difference]: Finished difference Result 5241 states and 7712 transitions. [2022-07-22 20:50:28,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:50:28,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:28,537 INFO L225 Difference]: With dead ends: 5241 [2022-07-22 20:50:28,537 INFO L226 Difference]: Without dead ends: 4147 [2022-07-22 20:50:28,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:50:28,543 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 1798 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3261 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:28,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 3237 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 20:50:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2022-07-22 20:50:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 3393. [2022-07-22 20:50:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2931 states have (on average 1.39338109860116) internal successors, (4084), 2950 states have internal predecessors, (4084), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-22 20:50:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4703 transitions. [2022-07-22 20:50:28,867 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4703 transitions. Word has length 179 [2022-07-22 20:50:28,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:28,867 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4703 transitions. [2022-07-22 20:50:28,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:28,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4703 transitions. [2022-07-22 20:50:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:28,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:28,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:28,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 20:50:28,872 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash -70166100, now seen corresponding path program 1 times [2022-07-22 20:50:28,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:28,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349726750] [2022-07-22 20:50:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:28,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:28,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:29,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:29,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349726750] [2022-07-22 20:50:29,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349726750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:29,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:29,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:29,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087672312] [2022-07-22 20:50:29,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:29,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:29,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:29,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:29,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:29,009 INFO L87 Difference]: Start difference. First operand 3393 states and 4703 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:30,752 INFO L93 Difference]: Finished difference Result 5942 states and 8820 transitions. [2022-07-22 20:50:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:30,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:30,764 INFO L225 Difference]: With dead ends: 5942 [2022-07-22 20:50:30,764 INFO L226 Difference]: Without dead ends: 4133 [2022-07-22 20:50:30,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:50:30,769 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1342 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:30,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 1911 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:50:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2022-07-22 20:50:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3393. [2022-07-22 20:50:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2931 states have (on average 1.3916751961787786) internal successors, (4079), 2950 states have internal predecessors, (4079), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-22 20:50:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4698 transitions. [2022-07-22 20:50:31,085 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4698 transitions. Word has length 179 [2022-07-22 20:50:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:31,086 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4698 transitions. [2022-07-22 20:50:31,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4698 transitions. [2022-07-22 20:50:31,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:31,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:31,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:31,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 20:50:31,091 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash -993333526, now seen corresponding path program 1 times [2022-07-22 20:50:31,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:31,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811477376] [2022-07-22 20:50:31,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:31,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:31,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:31,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:31,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811477376] [2022-07-22 20:50:31,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811477376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:31,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:31,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:31,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443188302] [2022-07-22 20:50:31,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:31,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:31,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:31,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:31,246 INFO L87 Difference]: Start difference. First operand 3393 states and 4698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:34,545 INFO L93 Difference]: Finished difference Result 7852 states and 11825 transitions. [2022-07-22 20:50:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:50:34,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:34,562 INFO L225 Difference]: With dead ends: 7852 [2022-07-22 20:50:34,562 INFO L226 Difference]: Without dead ends: 6043 [2022-07-22 20:50:34,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:50:34,569 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 1790 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:34,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 3226 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 20:50:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2022-07-22 20:50:35,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 4827. [2022-07-22 20:50:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.4425111685868799) internal successors, (6135), 4276 states have internal predecessors, (6135), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-22 20:50:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6944 transitions. [2022-07-22 20:50:35,089 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6944 transitions. Word has length 179 [2022-07-22 20:50:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:35,089 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6944 transitions. [2022-07-22 20:50:35,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:35,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6944 transitions. [2022-07-22 20:50:35,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:35,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:35,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:35,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 20:50:35,094 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:35,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:35,095 INFO L85 PathProgramCache]: Analyzing trace with hash -607471124, now seen corresponding path program 1 times [2022-07-22 20:50:35,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:35,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135362345] [2022-07-22 20:50:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:35,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:35,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:35,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:35,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135362345] [2022-07-22 20:50:35,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135362345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:35,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:35,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:35,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955875060] [2022-07-22 20:50:35,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:35,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:35,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:35,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:35,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:35,236 INFO L87 Difference]: Start difference. First operand 4827 states and 6944 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:37,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:37,027 INFO L93 Difference]: Finished difference Result 9306 states and 14139 transitions. [2022-07-22 20:50:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:37,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:37,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:37,042 INFO L225 Difference]: With dead ends: 9306 [2022-07-22 20:50:37,042 INFO L226 Difference]: Without dead ends: 6063 [2022-07-22 20:50:37,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:50:37,051 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1563 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:37,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1652 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:50:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2022-07-22 20:50:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 4827. [2022-07-22 20:50:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.4403950152833294) internal successors, (6126), 4276 states have internal predecessors, (6126), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-22 20:50:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6935 transitions. [2022-07-22 20:50:37,467 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6935 transitions. Word has length 179 [2022-07-22 20:50:37,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:37,468 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6935 transitions. [2022-07-22 20:50:37,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6935 transitions. [2022-07-22 20:50:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:37,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:37,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:37,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 20:50:37,472 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash -872118614, now seen corresponding path program 1 times [2022-07-22 20:50:37,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:37,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531664519] [2022-07-22 20:50:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:37,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:37,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:37,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531664519] [2022-07-22 20:50:37,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531664519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:37,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:37,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:37,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264465405] [2022-07-22 20:50:37,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:37,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:37,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:37,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:37,605 INFO L87 Difference]: Start difference. First operand 4827 states and 6935 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:39,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:39,612 INFO L93 Difference]: Finished difference Result 9286 states and 14072 transitions. [2022-07-22 20:50:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:39,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:39,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:39,628 INFO L225 Difference]: With dead ends: 9286 [2022-07-22 20:50:39,629 INFO L226 Difference]: Without dead ends: 6043 [2022-07-22 20:50:39,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:50:39,636 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1340 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:39,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 1896 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:50:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2022-07-22 20:50:40,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 4827. [2022-07-22 20:50:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.438278861979779) internal successors, (6117), 4276 states have internal predecessors, (6117), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-22 20:50:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6926 transitions. [2022-07-22 20:50:40,040 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6926 transitions. Word has length 179 [2022-07-22 20:50:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:40,041 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6926 transitions. [2022-07-22 20:50:40,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:40,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6926 transitions. [2022-07-22 20:50:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:40,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:40,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:40,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 20:50:40,045 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2099669736, now seen corresponding path program 1 times [2022-07-22 20:50:40,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:40,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827519041] [2022-07-22 20:50:40,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:40,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:40,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:40,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:40,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:40,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:40,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:40,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827519041] [2022-07-22 20:50:40,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827519041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:40,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:40,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:40,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931295037] [2022-07-22 20:50:40,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:40,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:40,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:40,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:40,181 INFO L87 Difference]: Start difference. First operand 4827 states and 6926 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:42,063 INFO L93 Difference]: Finished difference Result 9276 states and 14025 transitions. [2022-07-22 20:50:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:42,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:42,079 INFO L225 Difference]: With dead ends: 9276 [2022-07-22 20:50:42,079 INFO L226 Difference]: Without dead ends: 6033 [2022-07-22 20:50:42,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:50:42,087 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 1557 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:42,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 1642 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:50:42,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6033 states. [2022-07-22 20:50:42,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6033 to 4827. [2022-07-22 20:50:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.4361627086762285) internal successors, (6108), 4276 states have internal predecessors, (6108), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-22 20:50:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6917 transitions. [2022-07-22 20:50:42,472 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6917 transitions. Word has length 179 [2022-07-22 20:50:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:42,472 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6917 transitions. [2022-07-22 20:50:42,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:42,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6917 transitions. [2022-07-22 20:50:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:42,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:42,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:42,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 20:50:42,476 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:42,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -298318102, now seen corresponding path program 1 times [2022-07-22 20:50:42,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:42,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48036747] [2022-07-22 20:50:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:42,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:42,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:42,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:42,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48036747] [2022-07-22 20:50:42,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48036747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:42,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:42,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745419593] [2022-07-22 20:50:42,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:42,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:42,607 INFO L87 Difference]: Start difference. First operand 4827 states and 6917 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:46,405 INFO L93 Difference]: Finished difference Result 13044 states and 19901 transitions. [2022-07-22 20:50:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:50:46,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:46,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:46,424 INFO L225 Difference]: With dead ends: 13044 [2022-07-22 20:50:46,424 INFO L226 Difference]: Without dead ends: 9801 [2022-07-22 20:50:46,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:50:46,431 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 1767 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3156 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:46,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 3197 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 3156 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 20:50:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2022-07-22 20:50:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 7736. [2022-07-22 20:50:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 6938 states have (on average 1.4773710002882676) internal successors, (10250), 6969 states have internal predecessors, (10250), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-22 20:50:47,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 11457 transitions. [2022-07-22 20:50:47,150 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 11457 transitions. Word has length 179 [2022-07-22 20:50:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:47,151 INFO L495 AbstractCegarLoop]: Abstraction has 7736 states and 11457 transitions. [2022-07-22 20:50:47,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 11457 transitions. [2022-07-22 20:50:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:47,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:47,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:47,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 20:50:47,157 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash 39969448, now seen corresponding path program 1 times [2022-07-22 20:50:47,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:47,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391090389] [2022-07-22 20:50:47,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:47,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:47,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:47,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:47,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:47,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391090389] [2022-07-22 20:50:47,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391090389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:47,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:47,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:47,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493389620] [2022-07-22 20:50:47,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:47,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:47,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:47,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:47,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:47,280 INFO L87 Difference]: Start difference. First operand 7736 states and 11457 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:49,757 INFO L93 Difference]: Finished difference Result 16010 states and 24628 transitions. [2022-07-22 20:50:49,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:50:49,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:49,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:49,782 INFO L225 Difference]: With dead ends: 16010 [2022-07-22 20:50:49,782 INFO L226 Difference]: Without dead ends: 9858 [2022-07-22 20:50:49,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:50:49,796 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 1335 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:49,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 1883 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:50:49,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2022-07-22 20:50:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 7736. [2022-07-22 20:50:50,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 6938 states have (on average 1.4749207264341309) internal successors, (10233), 6969 states have internal predecessors, (10233), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-22 20:50:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 11440 transitions. [2022-07-22 20:50:50,618 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 11440 transitions. Word has length 179 [2022-07-22 20:50:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:50,618 INFO L495 AbstractCegarLoop]: Abstraction has 7736 states and 11440 transitions. [2022-07-22 20:50:50,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 11440 transitions. [2022-07-22 20:50:50,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:50,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:50,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:50,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 20:50:50,623 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:50,623 INFO L85 PathProgramCache]: Analyzing trace with hash 466523946, now seen corresponding path program 1 times [2022-07-22 20:50:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:50,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711956082] [2022-07-22 20:50:50,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:50,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:50,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:50,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:50,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711956082] [2022-07-22 20:50:50,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711956082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:50,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:50,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450763093] [2022-07-22 20:50:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:50,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:50,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:50,761 INFO L87 Difference]: Start difference. First operand 7736 states and 11440 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:56,467 INFO L93 Difference]: Finished difference Result 26133 states and 40361 transitions. [2022-07-22 20:50:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:50:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:50:56,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:56,523 INFO L225 Difference]: With dead ends: 26133 [2022-07-22 20:50:56,523 INFO L226 Difference]: Without dead ends: 19981 [2022-07-22 20:50:56,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:50:56,543 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 2205 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:56,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2247 Valid, 3172 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 20:50:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19981 states. [2022-07-22 20:50:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19981 to 13402. [2022-07-22 20:50:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13402 states, 12172 states have (on average 1.5009037134406835) internal successors, (18269), 12219 states have internal predecessors, (18269), 838 states have call successors, (838), 329 states have call predecessors, (838), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2022-07-22 20:50:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13402 states to 13402 states and 20294 transitions. [2022-07-22 20:50:58,199 INFO L78 Accepts]: Start accepts. Automaton has 13402 states and 20294 transitions. Word has length 179 [2022-07-22 20:50:58,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:58,199 INFO L495 AbstractCegarLoop]: Abstraction has 13402 states and 20294 transitions. [2022-07-22 20:50:58,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:58,199 INFO L276 IsEmpty]: Start isEmpty. Operand 13402 states and 20294 transitions. [2022-07-22 20:50:58,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:50:58,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:58,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:58,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 20:50:58,206 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:58,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:58,207 INFO L85 PathProgramCache]: Analyzing trace with hash -73905560, now seen corresponding path program 1 times [2022-07-22 20:50:58,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:58,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112214912] [2022-07-22 20:50:58,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:58,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:58,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:58,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:50:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:50:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:58,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:50:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:58,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:50:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:58,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:58,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112214912] [2022-07-22 20:50:58,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112214912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:58,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:58,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:58,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543689154] [2022-07-22 20:50:58,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:58,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:58,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:58,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:58,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:58,331 INFO L87 Difference]: Start difference. First operand 13402 states and 20294 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:51:07,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:07,266 INFO L93 Difference]: Finished difference Result 48757 states and 75985 transitions. [2022-07-22 20:51:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:51:07,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:51:07,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:07,391 INFO L225 Difference]: With dead ends: 48757 [2022-07-22 20:51:07,391 INFO L226 Difference]: Without dead ends: 36939 [2022-07-22 20:51:07,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:51:07,423 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 1861 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:07,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 3343 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 20:51:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36939 states. [2022-07-22 20:51:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36939 to 24843. [2022-07-22 20:51:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24843 states, 22765 states have (on average 1.518778827146936) internal successors, (34575), 22844 states have internal predecessors, (34575), 1462 states have call successors, (1462), 521 states have call predecessors, (1462), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2022-07-22 20:51:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24843 states to 24843 states and 38366 transitions. [2022-07-22 20:51:10,248 INFO L78 Accepts]: Start accepts. Automaton has 24843 states and 38366 transitions. Word has length 179 [2022-07-22 20:51:10,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:10,249 INFO L495 AbstractCegarLoop]: Abstraction has 24843 states and 38366 transitions. [2022-07-22 20:51:10,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:51:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 24843 states and 38366 transitions. [2022-07-22 20:51:10,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:51:10,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:10,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:10,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 20:51:10,259 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:10,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash -229886102, now seen corresponding path program 1 times [2022-07-22 20:51:10,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:10,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218502916] [2022-07-22 20:51:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:10,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:51:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:51:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:51:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:51:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:10,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:10,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218502916] [2022-07-22 20:51:10,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218502916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:10,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:10,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:10,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152744167] [2022-07-22 20:51:10,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:10,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:10,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:10,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:10,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:10,405 INFO L87 Difference]: Start difference. First operand 24843 states and 38366 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:51:25,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:25,308 INFO L93 Difference]: Finished difference Result 93764 states and 147575 transitions. [2022-07-22 20:51:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:51:25,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:51:25,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:25,503 INFO L225 Difference]: With dead ends: 93764 [2022-07-22 20:51:25,504 INFO L226 Difference]: Without dead ends: 70505 [2022-07-22 20:51:25,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:51:25,568 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 2129 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:25,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 3164 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 3103 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 20:51:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70505 states. [2022-07-22 20:51:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70505 to 47692. [2022-07-22 20:51:31,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47692 states, 43950 states have (on average 1.5293970420932879) internal successors, (67217), 44093 states have internal predecessors, (67217), 2678 states have call successors, (2678), 905 states have call predecessors, (2678), 1062 states have return successors, (5067), 2821 states have call predecessors, (5067), 2675 states have call successors, (5067) [2022-07-22 20:51:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47692 states to 47692 states and 74962 transitions. [2022-07-22 20:51:31,314 INFO L78 Accepts]: Start accepts. Automaton has 47692 states and 74962 transitions. Word has length 179 [2022-07-22 20:51:31,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:31,314 INFO L495 AbstractCegarLoop]: Abstraction has 47692 states and 74962 transitions. [2022-07-22 20:51:31,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:51:31,315 INFO L276 IsEmpty]: Start isEmpty. Operand 47692 states and 74962 transitions. [2022-07-22 20:51:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:51:31,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:31,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:31,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 20:51:31,330 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:31,330 INFO L85 PathProgramCache]: Analyzing trace with hash 180724264, now seen corresponding path program 1 times [2022-07-22 20:51:31,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:31,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971361539] [2022-07-22 20:51:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:31,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:31,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:51:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:51:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:51:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:51:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:31,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971361539] [2022-07-22 20:51:31,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971361539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:31,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:31,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:31,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510461433] [2022-07-22 20:51:31,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:31,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:31,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:31,602 INFO L87 Difference]: Start difference. First operand 47692 states and 74962 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:51:58,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:58,163 INFO L93 Difference]: Finished difference Result 180673 states and 287993 transitions. [2022-07-22 20:51:58,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:51:58,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-22 20:51:58,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:58,619 INFO L225 Difference]: With dead ends: 180673 [2022-07-22 20:51:58,619 INFO L226 Difference]: Without dead ends: 134565 [2022-07-22 20:51:58,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:51:58,944 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 1828 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:58,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 3279 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 20:51:59,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134565 states. [2022-07-22 20:52:10,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134565 to 93454. [2022-07-22 20:52:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93454 states, 86448 states have (on average 1.5364265223024245) internal successors, (132821), 86719 states have internal predecessors, (132821), 5046 states have call successors, (5046), 1673 states have call predecessors, (5046), 1958 states have return successors, (11937), 5317 states have call predecessors, (11937), 5043 states have call successors, (11937) [2022-07-22 20:52:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93454 states to 93454 states and 149804 transitions. [2022-07-22 20:52:10,617 INFO L78 Accepts]: Start accepts. Automaton has 93454 states and 149804 transitions. Word has length 179 [2022-07-22 20:52:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:10,618 INFO L495 AbstractCegarLoop]: Abstraction has 93454 states and 149804 transitions. [2022-07-22 20:52:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 93454 states and 149804 transitions. [2022-07-22 20:52:10,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:52:10,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:10,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:10,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-22 20:52:10,655 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:10,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:10,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1955158938, now seen corresponding path program 1 times [2022-07-22 20:52:10,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:10,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497803539] [2022-07-22 20:52:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:10,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:10,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 20:52:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:52:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:10,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 20:52:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 20:52:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:10,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:10,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497803539] [2022-07-22 20:52:10,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497803539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:10,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:10,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:10,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082531184] [2022-07-22 20:52:10,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:10,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:10,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:10,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:10,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:10,792 INFO L87 Difference]: Start difference. First operand 93454 states and 149804 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)