./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_3.cil+token_ring.13.cil-1.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 0e49baa02682605d5c6b8a86e9e1d38b2cd4076796b3122e76d3b43b5274a0df --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:17:41,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:17:41,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:17:41,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:17:41,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:17:41,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:17:41,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:17:41,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:17:41,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:17:41,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:17:41,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:17:41,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:17:41,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:17:41,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:17:41,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:17:41,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:17:41,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:17:41,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:17:41,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:17:41,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:17:41,932 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:17:41,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:17:41,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:17:41,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:17:41,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:17:41,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:17:41,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:17:41,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:17:41,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:17:41,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:17:41,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:17:41,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:17:41,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:17:41,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:17:41,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:17:41,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:17:41,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:17:41,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:17:41,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:17:41,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:17:41,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:17:41,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:17:41,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:17:41,972 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:17:41,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:17:41,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:17:41,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:17:41,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:17:41,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:17:41,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:17:41,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:17:41,974 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:17:41,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:17:41,975 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:17:41,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:17:41,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:17:41,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:17:41,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:17:41,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:17:41,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:17:41,976 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:17:41,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:17:41,976 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:17:41,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:17:41,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:17:41,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:17:41,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:17:41,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:17:41,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:17:41,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:17:41,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:17:41,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:17:41,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:17:41,978 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:17:41,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:17:41,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:17:41,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e49baa02682605d5c6b8a86e9e1d38b2cd4076796b3122e76d3b43b5274a0df [2022-07-13 21:17:42,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:17:42,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:17:42,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:17:42,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:17:42,162 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:17:42,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-07-13 21:17:42,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564d06424/1cbdb15776f240bfb2c3cc18b60fe22f/FLAG61d09ea1f [2022-07-13 21:17:42,638 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:17:42,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-07-13 21:17:42,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564d06424/1cbdb15776f240bfb2c3cc18b60fe22f/FLAG61d09ea1f [2022-07-13 21:17:43,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/564d06424/1cbdb15776f240bfb2c3cc18b60fe22f [2022-07-13 21:17:43,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:17:43,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:17:43,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:17:43,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:17:43,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:17:43,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be6e3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43, skipping insertion in model container [2022-07-13 21:17:43,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:17:43,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:17:43,195 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_3.cil+token_ring.13.cil-1.c[911,924] [2022-07-13 21:17:43,234 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_3.cil+token_ring.13.cil-1.c[8416,8429] [2022-07-13 21:17:43,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:17:43,341 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:17:43,348 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_3.cil+token_ring.13.cil-1.c[911,924] [2022-07-13 21:17:43,366 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_3.cil+token_ring.13.cil-1.c[8416,8429] [2022-07-13 21:17:43,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:17:43,438 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:17:43,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43 WrapperNode [2022-07-13 21:17:43,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:17:43,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:17:43,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:17:43,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:17:43,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,494 INFO L137 Inliner]: procedures = 81, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1141 [2022-07-13 21:17:43,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:17:43,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:17:43,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:17:43,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:17:43,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:17:43,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:17:43,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:17:43,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:17:43,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (1/1) ... [2022-07-13 21:17:43,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:17:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:17:43,581 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) [2022-07-13 21:17:43,594 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 [2022-07-13 21:17:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:17:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:17:43,609 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:17:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:17:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:17:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:17:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:17:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:17:43,613 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:17:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:17:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:17:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:17:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:17:43,614 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:17:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:17:43,615 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:17:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:17:43,615 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:17:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:17:43,615 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:17:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:17:43,615 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:17:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:17:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:17:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:17:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:17:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:17:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:17:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:17:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:17:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:17:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:17:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-13 21:17:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-13 21:17:43,716 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:17:43,717 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:17:44,292 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-13 21:17:44,292 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-13 21:17:44,356 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:17:44,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:17:44,371 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-13 21:17:44,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:17:44 BoogieIcfgContainer [2022-07-13 21:17:44,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:17:44,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:17:44,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:17:44,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:17:44,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:17:43" (1/3) ... [2022-07-13 21:17:44,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dab2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:17:44, skipping insertion in model container [2022-07-13 21:17:44,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:17:43" (2/3) ... [2022-07-13 21:17:44,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55dab2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:17:44, skipping insertion in model container [2022-07-13 21:17:44,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:17:44" (3/3) ... [2022-07-13 21:17:44,380 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-07-13 21:17:44,390 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:17:44,390 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:17:44,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:17:44,457 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@52d04846, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@877d7cd [2022-07-13 21:17:44,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:17:44,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 469 states have (on average 1.6460554371002132) internal successors, (772), 477 states have internal predecessors, (772), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-13 21:17:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:17:44,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:44,486 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] [2022-07-13 21:17:44,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:44,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1984097588, now seen corresponding path program 1 times [2022-07-13 21:17:44,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:44,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369511759] [2022-07-13 21:17:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:44,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:17:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:17:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:44,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:44,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:44,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369511759] [2022-07-13 21:17:44,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369511759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:44,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:44,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:17:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814504292] [2022-07-13 21:17:44,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:44,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:17:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:44,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:17:44,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:17:44,913 INFO L87 Difference]: Start difference. First operand has 532 states, 469 states have (on average 1.6460554371002132) internal successors, (772), 477 states have internal predecessors, (772), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) 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) [2022-07-13 21:17:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:45,973 INFO L93 Difference]: Finished difference Result 1185 states and 1909 transitions. [2022-07-13 21:17:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:17:45,976 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 [2022-07-13 21:17:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:45,995 INFO L225 Difference]: With dead ends: 1185 [2022-07-13 21:17:45,995 INFO L226 Difference]: Without dead ends: 672 [2022-07-13 21:17:46,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:17:46,002 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 954 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:46,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 3118 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:17:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-07-13 21:17:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 633. [2022-07-13 21:17:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 551 states have (on average 1.5372050816696914) internal successors, (847), 558 states have internal predecessors, (847), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2022-07-13 21:17:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 964 transitions. [2022-07-13 21:17:46,076 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 964 transitions. Word has length 65 [2022-07-13 21:17:46,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:46,077 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 964 transitions. [2022-07-13 21:17:46,077 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) [2022-07-13 21:17:46,077 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 964 transitions. [2022-07-13 21:17:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:17:46,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:46,080 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] [2022-07-13 21:17:46,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:17:46,081 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:46,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:46,081 INFO L85 PathProgramCache]: Analyzing trace with hash -631981068, now seen corresponding path program 1 times [2022-07-13 21:17:46,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:46,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843207985] [2022-07-13 21:17:46,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:46,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:17:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:17:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:46,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:46,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843207985] [2022-07-13 21:17:46,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843207985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:46,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:46,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:17:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941051382] [2022-07-13 21:17:46,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:46,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:17:46,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:17:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:17:46,173 INFO L87 Difference]: Start difference. First operand 633 states and 964 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-13 21:17:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:47,717 INFO L93 Difference]: Finished difference Result 1666 states and 2424 transitions. [2022-07-13 21:17:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:17:47,718 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-13 21:17:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:47,725 INFO L225 Difference]: With dead ends: 1666 [2022-07-13 21:17:47,725 INFO L226 Difference]: Without dead ends: 1445 [2022-07-13 21:17:47,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:17:47,727 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 4558 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4580 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:47,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4580 Valid, 2990 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:17:47,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2022-07-13 21:17:47,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1306. [2022-07-13 21:17:47,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1094 states have (on average 1.4497257769652652) internal successors, (1586), 1109 states have internal predecessors, (1586), 129 states have call successors, (129), 75 states have call predecessors, (129), 81 states have return successors, (139), 123 states have call predecessors, (139), 125 states have call successors, (139) [2022-07-13 21:17:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1854 transitions. [2022-07-13 21:17:47,800 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1854 transitions. Word has length 65 [2022-07-13 21:17:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:47,801 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 1854 transitions. [2022-07-13 21:17:47,801 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-13 21:17:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1854 transitions. [2022-07-13 21:17:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:17:47,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:47,803 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] [2022-07-13 21:17:47,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:17:47,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:47,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1785973121, now seen corresponding path program 1 times [2022-07-13 21:17:47,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:47,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010815562] [2022-07-13 21:17:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:47,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:47,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:47,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:47,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:47,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:17:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:17:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:47,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:47,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010815562] [2022-07-13 21:17:47,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010815562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:47,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:47,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:17:47,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719049837] [2022-07-13 21:17:47,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:47,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:17:47,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:47,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:17:47,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:17:47,958 INFO L87 Difference]: Start difference. First operand 1306 states and 1854 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-13 21:17:48,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:48,953 INFO L93 Difference]: Finished difference Result 2332 states and 3248 transitions. [2022-07-13 21:17:48,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:17:48,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-07-13 21:17:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:48,959 INFO L225 Difference]: With dead ends: 2332 [2022-07-13 21:17:48,960 INFO L226 Difference]: Without dead ends: 1444 [2022-07-13 21:17:48,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:17:48,962 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 709 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:48,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 3542 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:17:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2022-07-13 21:17:49,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1336. [2022-07-13 21:17:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1118 states have (on average 1.4373881932021466) internal successors, (1607), 1133 states have internal predecessors, (1607), 129 states have call successors, (129), 75 states have call predecessors, (129), 87 states have return successors, (145), 129 states have call predecessors, (145), 125 states have call successors, (145) [2022-07-13 21:17:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1881 transitions. [2022-07-13 21:17:49,017 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1881 transitions. Word has length 66 [2022-07-13 21:17:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:49,017 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 1881 transitions. [2022-07-13 21:17:49,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-13 21:17:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1881 transitions. [2022-07-13 21:17:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:17:49,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:49,019 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] [2022-07-13 21:17:49,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:17:49,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:49,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1479634877, now seen corresponding path program 1 times [2022-07-13 21:17:49,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:49,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012856566] [2022-07-13 21:17:49,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:49,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:17:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:17:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:49,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:49,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012856566] [2022-07-13 21:17:49,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012856566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:49,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:49,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:17:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371321740] [2022-07-13 21:17:49,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:49,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:17:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:17:49,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:17:49,096 INFO L87 Difference]: Start difference. First operand 1336 states and 1881 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-07-13 21:17:50,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:50,634 INFO L93 Difference]: Finished difference Result 3674 states and 5068 transitions. [2022-07-13 21:17:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:17:50,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 66 [2022-07-13 21:17:50,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:50,640 INFO L225 Difference]: With dead ends: 3674 [2022-07-13 21:17:50,640 INFO L226 Difference]: Without dead ends: 1579 [2022-07-13 21:17:50,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:17:50,644 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 4149 mSDsluCounter, 2548 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4171 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:50,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4171 Valid, 3470 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:17:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1579 states. [2022-07-13 21:17:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1579 to 1424. [2022-07-13 21:17:50,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1171 states have (on average 1.403928266438941) internal successors, (1644), 1186 states have internal predecessors, (1644), 149 states have call successors, (149), 89 states have call predecessors, (149), 102 states have return successors, (166), 150 states have call predecessors, (166), 145 states have call successors, (166) [2022-07-13 21:17:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1959 transitions. [2022-07-13 21:17:50,686 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1959 transitions. Word has length 66 [2022-07-13 21:17:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:50,687 INFO L495 AbstractCegarLoop]: Abstraction has 1424 states and 1959 transitions. [2022-07-13 21:17:50,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-07-13 21:17:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1959 transitions. [2022-07-13 21:17:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:17:50,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:50,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:17:50,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:17:50,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:50,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash 414689489, now seen corresponding path program 1 times [2022-07-13 21:17:50,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:50,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963119077] [2022-07-13 21:17:50,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:50,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:50,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:50,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:50,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:50,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:50,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:17:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:17:50,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:50,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963119077] [2022-07-13 21:17:50,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963119077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:50,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:50,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:17:50,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723154923] [2022-07-13 21:17:50,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:50,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:17:50,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:50,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:17:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:17:50,781 INFO L87 Difference]: Start difference. First operand 1424 states and 1959 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-13 21:17:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:51,751 INFO L93 Difference]: Finished difference Result 2601 states and 3510 transitions. [2022-07-13 21:17:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:17:51,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-07-13 21:17:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:51,758 INFO L225 Difference]: With dead ends: 2601 [2022-07-13 21:17:51,758 INFO L226 Difference]: Without dead ends: 1595 [2022-07-13 21:17:51,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:17:51,762 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1044 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 1891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:51,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 3129 Invalid, 1891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:17:51,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2022-07-13 21:17:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1464. [2022-07-13 21:17:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1203 states have (on average 1.3906899418121363) internal successors, (1673), 1218 states have internal predecessors, (1673), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2022-07-13 21:17:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1996 transitions. [2022-07-13 21:17:51,805 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1996 transitions. Word has length 91 [2022-07-13 21:17:51,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:51,806 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 1996 transitions. [2022-07-13 21:17:51,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-13 21:17:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1996 transitions. [2022-07-13 21:17:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:17:51,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:51,807 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:17:51,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:17:51,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:51,808 INFO L85 PathProgramCache]: Analyzing trace with hash 858590163, now seen corresponding path program 1 times [2022-07-13 21:17:51,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:51,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394468461] [2022-07-13 21:17:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:51,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:17:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:17:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:51,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394468461] [2022-07-13 21:17:51,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394468461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:51,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:51,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:17:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313504001] [2022-07-13 21:17:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:51,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:17:51,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:17:51,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:17:51,867 INFO L87 Difference]: Start difference. First operand 1464 states and 1996 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 21:17:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:52,310 INFO L93 Difference]: Finished difference Result 3781 states and 5032 transitions. [2022-07-13 21:17:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:17:52,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-13 21:17:52,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:52,319 INFO L225 Difference]: With dead ends: 3781 [2022-07-13 21:17:52,320 INFO L226 Difference]: Without dead ends: 2736 [2022-07-13 21:17:52,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:17:52,323 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 2233 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:52,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 1594 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:17:52,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-07-13 21:17:52,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2506. [2022-07-13 21:17:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2016 states have (on average 1.337797619047619) internal successors, (2697), 2050 states have internal predecessors, (2697), 266 states have call successors, (266), 170 states have call predecessors, (266), 222 states have return successors, (371), 288 states have call predecessors, (371), 262 states have call successors, (371) [2022-07-13 21:17:52,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3334 transitions. [2022-07-13 21:17:52,403 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3334 transitions. Word has length 91 [2022-07-13 21:17:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:52,404 INFO L495 AbstractCegarLoop]: Abstraction has 2506 states and 3334 transitions. [2022-07-13 21:17:52,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 21:17:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3334 transitions. [2022-07-13 21:17:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:17:52,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:52,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:17:52,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:17:52,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:52,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:52,428 INFO L85 PathProgramCache]: Analyzing trace with hash -199247915, now seen corresponding path program 1 times [2022-07-13 21:17:52,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:52,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558322673] [2022-07-13 21:17:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:52,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:52,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:52,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:52,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:52,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:17:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:17:52,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:52,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558322673] [2022-07-13 21:17:52,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558322673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:52,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:52,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:17:52,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994354155] [2022-07-13 21:17:52,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:52,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:17:52,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:17:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:17:52,494 INFO L87 Difference]: Start difference. First operand 2506 states and 3334 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:17:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:53,039 INFO L93 Difference]: Finished difference Result 3670 states and 4798 transitions. [2022-07-13 21:17:53,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:17:53,039 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-13 21:17:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:53,047 INFO L225 Difference]: With dead ends: 3670 [2022-07-13 21:17:53,047 INFO L226 Difference]: Without dead ends: 1583 [2022-07-13 21:17:53,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:53,053 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 820 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:53,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 2183 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:17:53,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-07-13 21:17:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1464. [2022-07-13 21:17:53,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1203 states have (on average 1.368246051537822) internal successors, (1646), 1218 states have internal predecessors, (1646), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2022-07-13 21:17:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1969 transitions. [2022-07-13 21:17:53,100 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1969 transitions. Word has length 91 [2022-07-13 21:17:53,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:53,100 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 1969 transitions. [2022-07-13 21:17:53,100 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:17:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1969 transitions. [2022-07-13 21:17:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 21:17:53,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:53,101 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:17:53,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:17:53,102 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:53,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1459676537, now seen corresponding path program 1 times [2022-07-13 21:17:53,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:53,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441462947] [2022-07-13 21:17:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:53,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:17:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:17:53,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:53,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441462947] [2022-07-13 21:17:53,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441462947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:53,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:53,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:17:53,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106019448] [2022-07-13 21:17:53,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:53,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:17:53,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:53,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:17:53,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:17:53,196 INFO L87 Difference]: Start difference. First operand 1464 states and 1969 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) [2022-07-13 21:17:54,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:54,375 INFO L93 Difference]: Finished difference Result 3599 states and 4703 transitions. [2022-07-13 21:17:54,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 21:17:54,375 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 92 [2022-07-13 21:17:54,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:54,383 INFO L225 Difference]: With dead ends: 3599 [2022-07-13 21:17:54,383 INFO L226 Difference]: Without dead ends: 2395 [2022-07-13 21:17:54,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-13 21:17:54,386 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 2653 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2699 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:54,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2699 Valid, 2867 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1496 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:17:54,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-07-13 21:17:54,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2205. [2022-07-13 21:17:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1769 states have (on average 1.3126059920859243) internal successors, (2322), 1795 states have internal predecessors, (2322), 236 states have call successors, (236), 145 states have call predecessors, (236), 198 states have return successors, (320), 266 states have call predecessors, (320), 232 states have call successors, (320) [2022-07-13 21:17:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2878 transitions. [2022-07-13 21:17:54,449 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2878 transitions. Word has length 92 [2022-07-13 21:17:54,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:54,450 INFO L495 AbstractCegarLoop]: Abstraction has 2205 states and 2878 transitions. [2022-07-13 21:17:54,450 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) [2022-07-13 21:17:54,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2878 transitions. [2022-07-13 21:17:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 21:17:54,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:54,452 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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] [2022-07-13 21:17:54,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:17:54,452 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:54,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1760478952, now seen corresponding path program 1 times [2022-07-13 21:17:54,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:54,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841033576] [2022-07-13 21:17:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:54,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:17:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:17:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 21:17:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:17:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 21:17:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 21:17:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 21:17:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 21:17:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 21:17:54,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:54,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841033576] [2022-07-13 21:17:54,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841033576] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:17:54,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506980905] [2022-07-13 21:17:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:54,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:17:54,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:17:54,564 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) [2022-07-13 21:17:54,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:17:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:54,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:17:54,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:17:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-13 21:17:54,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:17:54,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506980905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:54,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:17:54,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-13 21:17:54,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121133096] [2022-07-13 21:17:54,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:54,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:17:54,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:17:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:54,838 INFO L87 Difference]: Start difference. First operand 2205 states and 2878 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:17:54,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:54,927 INFO L93 Difference]: Finished difference Result 5550 states and 7020 transitions. [2022-07-13 21:17:54,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:17:54,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-13 21:17:54,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:54,941 INFO L225 Difference]: With dead ends: 5550 [2022-07-13 21:17:54,941 INFO L226 Difference]: Without dead ends: 3840 [2022-07-13 21:17:54,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:54,947 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 61 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:54,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1577 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:17:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3840 states. [2022-07-13 21:17:55,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3840 to 3803. [2022-07-13 21:17:55,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3013 states have (on average 1.2731496846996349) internal successors, (3836), 3059 states have internal predecessors, (3836), 413 states have call successors, (413), 282 states have call predecessors, (413), 375 states have return successors, (549), 463 states have call predecessors, (549), 409 states have call successors, (549) [2022-07-13 21:17:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 4798 transitions. [2022-07-13 21:17:55,095 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 4798 transitions. Word has length 163 [2022-07-13 21:17:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:55,095 INFO L495 AbstractCegarLoop]: Abstraction has 3803 states and 4798 transitions. [2022-07-13 21:17:55,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:17:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 4798 transitions. [2022-07-13 21:17:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-13 21:17:55,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:55,098 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:17:55,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 21:17:55,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:17:55,312 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1817064887, now seen corresponding path program 1 times [2022-07-13 21:17:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:55,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371388270] [2022-07-13 21:17:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:55,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:17:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:17:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 21:17:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:17:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:17:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 21:17:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 21:17:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:55,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 21:17:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 21:17:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-13 21:17:55,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:55,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371388270] [2022-07-13 21:17:55,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371388270] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:17:55,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869117196] [2022-07-13 21:17:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:55,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:17:55,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:17:55,402 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) [2022-07-13 21:17:55,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 21:17:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:55,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:17:55,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:17:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 21:17:55,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:17:55,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869117196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:55,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:17:55,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-13 21:17:55,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537028815] [2022-07-13 21:17:55,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:55,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:17:55,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:55,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:17:55,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:55,689 INFO L87 Difference]: Start difference. First operand 3803 states and 4798 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 21:17:55,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:55,851 INFO L93 Difference]: Finished difference Result 10571 states and 13068 transitions. [2022-07-13 21:17:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:17:55,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2022-07-13 21:17:55,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:55,879 INFO L225 Difference]: With dead ends: 10571 [2022-07-13 21:17:55,879 INFO L226 Difference]: Without dead ends: 7187 [2022-07-13 21:17:55,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:55,889 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 52 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:55,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1577 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:17:55,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2022-07-13 21:17:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 7177. [2022-07-13 21:17:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7177 states, 5640 states have (on average 1.2459219858156028) internal successors, (7027), 5727 states have internal predecessors, (7027), 791 states have call successors, (791), 556 states have call predecessors, (791), 744 states have return successors, (1067), 895 states have call predecessors, (1067), 787 states have call successors, (1067) [2022-07-13 21:17:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7177 states to 7177 states and 8885 transitions. [2022-07-13 21:17:56,176 INFO L78 Accepts]: Start accepts. Automaton has 7177 states and 8885 transitions. Word has length 195 [2022-07-13 21:17:56,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:56,177 INFO L495 AbstractCegarLoop]: Abstraction has 7177 states and 8885 transitions. [2022-07-13 21:17:56,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 21:17:56,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7177 states and 8885 transitions. [2022-07-13 21:17:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-13 21:17:56,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:56,181 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:17:56,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 21:17:56,399 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,SelfDestructingSolverStorable9 [2022-07-13 21:17:56,400 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:56,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:56,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1580509131, now seen corresponding path program 1 times [2022-07-13 21:17:56,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:56,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113329065] [2022-07-13 21:17:56,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:17:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:17:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:17:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:17:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:17:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:17:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 21:17:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:17:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:17:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:17:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 21:17:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 21:17:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:17:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:17:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 21:17:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 21:17:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-13 21:17:56,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:56,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113329065] [2022-07-13 21:17:56,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113329065] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:17:56,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17615501] [2022-07-13 21:17:56,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:56,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:17:56,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:17:56,520 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) [2022-07-13 21:17:56,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 21:17:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:56,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:17:56,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:17:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-13 21:17:56,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:17:56,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17615501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:56,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:17:56,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-13 21:17:56,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830348215] [2022-07-13 21:17:56,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:56,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:17:56,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:56,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:17:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:56,838 INFO L87 Difference]: Start difference. First operand 7177 states and 8885 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 21:17:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:57,065 INFO L93 Difference]: Finished difference Result 12611 states and 15779 transitions. [2022-07-13 21:17:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:17:57,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 195 [2022-07-13 21:17:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:57,070 INFO L225 Difference]: With dead ends: 12611 [2022-07-13 21:17:57,070 INFO L226 Difference]: Without dead ends: 410 [2022-07-13 21:17:57,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:17:57,091 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 673 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:57,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 777 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:17:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-07-13 21:17:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-07-13 21:17:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.585561497326203) internal successors, (593), 376 states have internal predecessors, (593), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 21:17:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 649 transitions. [2022-07-13 21:17:57,103 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 649 transitions. Word has length 195 [2022-07-13 21:17:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:57,103 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 649 transitions. [2022-07-13 21:17:57,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-13 21:17:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 649 transitions. [2022-07-13 21:17:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:17:57,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:57,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:17:57,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 21:17:57,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:17:57,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:57,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:57,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1535088010, now seen corresponding path program 1 times [2022-07-13 21:17:57,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:57,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951121402] [2022-07-13 21:17:57,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:57,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:57,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:17:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:57,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:17:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:57,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:17:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:57,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:17:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:57,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:57,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951121402] [2022-07-13 21:17:57,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951121402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:57,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:57,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:17:57,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545444687] [2022-07-13 21:17:57,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:57,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:17:57,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:57,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:17:57,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:17:57,504 INFO L87 Difference]: Start difference. First operand 410 states and 649 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-13 21:17:58,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:58,685 INFO L93 Difference]: Finished difference Result 961 states and 1543 transitions. [2022-07-13 21:17:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:17:58,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-07-13 21:17:58,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:58,687 INFO L225 Difference]: With dead ends: 961 [2022-07-13 21:17:58,688 INFO L226 Difference]: Without dead ends: 563 [2022-07-13 21:17:58,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:17:58,689 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1114 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:58,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 1151 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:17:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-13 21:17:58,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 410. [2022-07-13 21:17:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.5828877005347595) internal successors, (592), 376 states have internal predecessors, (592), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 21:17:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 648 transitions. [2022-07-13 21:17:58,704 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 648 transitions. Word has length 190 [2022-07-13 21:17:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:58,704 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 648 transitions. [2022-07-13 21:17:58,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-13 21:17:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 648 transitions. [2022-07-13 21:17:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:17:58,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:58,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:17:58,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:17:58,706 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1160730228, now seen corresponding path program 1 times [2022-07-13 21:17:58,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:58,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242173219] [2022-07-13 21:17:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:58,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:58,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:58,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:17:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:58,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:17:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:17:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:17:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:58,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:58,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:58,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242173219] [2022-07-13 21:17:58,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242173219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:58,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:58,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:17:58,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677361662] [2022-07-13 21:17:58,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:58,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:17:58,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:58,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:17:58,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:17:58,802 INFO L87 Difference]: Start difference. First operand 410 states and 648 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-13 21:17:59,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:59,985 INFO L93 Difference]: Finished difference Result 953 states and 1526 transitions. [2022-07-13 21:17:59,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:17:59,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-07-13 21:17:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:59,988 INFO L225 Difference]: With dead ends: 953 [2022-07-13 21:17:59,988 INFO L226 Difference]: Without dead ends: 563 [2022-07-13 21:17:59,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:17:59,989 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 1105 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:59,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 1149 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:17:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-13 21:18:00,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 410. [2022-07-13 21:18:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.5802139037433156) internal successors, (591), 376 states have internal predecessors, (591), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-13 21:18:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 647 transitions. [2022-07-13 21:18:00,007 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 647 transitions. Word has length 190 [2022-07-13 21:18:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:00,008 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 647 transitions. [2022-07-13 21:18:00,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2022-07-13 21:18:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 647 transitions. [2022-07-13 21:18:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:00,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:00,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:00,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:18:00,010 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:00,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:00,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1070669938, now seen corresponding path program 1 times [2022-07-13 21:18:00,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:00,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366002003] [2022-07-13 21:18:00,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:00,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:00,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:00,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366002003] [2022-07-13 21:18:00,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366002003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:00,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:00,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:18:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236454935] [2022-07-13 21:18:00,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:00,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:18:00,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:18:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:18:00,171 INFO L87 Difference]: Start difference. First operand 410 states and 647 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2022-07-13 21:18:02,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:02,662 INFO L93 Difference]: Finished difference Result 1512 states and 2438 transitions. [2022-07-13 21:18:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:18:02,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:02,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:02,666 INFO L225 Difference]: With dead ends: 1512 [2022-07-13 21:18:02,667 INFO L226 Difference]: Without dead ends: 1124 [2022-07-13 21:18:02,668 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 [2022-07-13 21:18:02,668 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1683 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:02,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 1816 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 21:18:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-07-13 21:18:02,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 817. [2022-07-13 21:18:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5930851063829787) internal successors, (1198), 755 states have internal predecessors, (1198), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-13 21:18:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1301 transitions. [2022-07-13 21:18:02,704 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1301 transitions. Word has length 190 [2022-07-13 21:18:02,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:02,704 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1301 transitions. [2022-07-13 21:18:02,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2022-07-13 21:18:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1301 transitions. [2022-07-13 21:18:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:02,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:02,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:02,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:18:02,706 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash -776356498, now seen corresponding path program 1 times [2022-07-13 21:18:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:02,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964070066] [2022-07-13 21:18:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:02,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:02,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:02,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:02,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964070066] [2022-07-13 21:18:02,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964070066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:02,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:02,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:02,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234410268] [2022-07-13 21:18:02,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:02,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:02,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:02,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:02,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:02,825 INFO L87 Difference]: Start difference. First operand 817 states and 1301 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:05,870 INFO L93 Difference]: Finished difference Result 2500 states and 4041 transitions. [2022-07-13 21:18:05,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:05,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:05,901 INFO L225 Difference]: With dead ends: 2500 [2022-07-13 21:18:05,901 INFO L226 Difference]: Without dead ends: 1705 [2022-07-13 21:18:05,904 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 [2022-07-13 21:18:05,905 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 1714 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 3452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:05,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1734 Valid, 3189 Invalid, 3452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3371 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:18:05,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-07-13 21:18:05,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1195. [2022-07-13 21:18:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 1101 states have (on average 1.586739327883742) internal successors, (1747), 1105 states have internal predecessors, (1747), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-13 21:18:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1896 transitions. [2022-07-13 21:18:05,960 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1896 transitions. Word has length 190 [2022-07-13 21:18:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:05,960 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1896 transitions. [2022-07-13 21:18:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1896 transitions. [2022-07-13 21:18:05,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:05,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:05,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:05,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:18:05,962 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1595360368, now seen corresponding path program 1 times [2022-07-13 21:18:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:05,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064656542] [2022-07-13 21:18:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:05,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:06,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:06,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:06,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064656542] [2022-07-13 21:18:06,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064656542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:06,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:06,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:06,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056727419] [2022-07-13 21:18:06,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:06,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:06,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:06,090 INFO L87 Difference]: Start difference. First operand 1195 states and 1896 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:09,195 INFO L93 Difference]: Finished difference Result 3957 states and 6384 transitions. [2022-07-13 21:18:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:09,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:09,227 INFO L225 Difference]: With dead ends: 3957 [2022-07-13 21:18:09,228 INFO L226 Difference]: Without dead ends: 2784 [2022-07-13 21:18:09,232 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 [2022-07-13 21:18:09,233 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 1711 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:09,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 3181 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:18:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2022-07-13 21:18:09,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 1952. [2022-07-13 21:18:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1800 states have (on average 1.5811111111111111) internal successors, (2846), 1806 states have internal predecessors, (2846), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-13 21:18:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3091 transitions. [2022-07-13 21:18:09,335 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3091 transitions. Word has length 190 [2022-07-13 21:18:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:09,335 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3091 transitions. [2022-07-13 21:18:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3091 transitions. [2022-07-13 21:18:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:09,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:09,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:09,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:18:09,338 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:09,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:09,338 INFO L85 PathProgramCache]: Analyzing trace with hash -129247954, now seen corresponding path program 1 times [2022-07-13 21:18:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:09,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19159743] [2022-07-13 21:18:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:09,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:09,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:09,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19159743] [2022-07-13 21:18:09,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19159743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:09,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:09,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:09,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980550525] [2022-07-13 21:18:09,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:09,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:09,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:09,486 INFO L87 Difference]: Start difference. First operand 1952 states and 3091 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:11,188 INFO L93 Difference]: Finished difference Result 4702 states and 7570 transitions. [2022-07-13 21:18:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:11,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:11,196 INFO L225 Difference]: With dead ends: 4702 [2022-07-13 21:18:11,196 INFO L226 Difference]: Without dead ends: 2772 [2022-07-13 21:18:11,200 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 [2022-07-13 21:18:11,201 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1214 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:11,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1737 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:18:11,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2022-07-13 21:18:11,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1952. [2022-07-13 21:18:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1800 states have (on average 1.5783333333333334) internal successors, (2841), 1806 states have internal predecessors, (2841), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-13 21:18:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 3086 transitions. [2022-07-13 21:18:11,313 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 3086 transitions. Word has length 190 [2022-07-13 21:18:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:11,314 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 3086 transitions. [2022-07-13 21:18:11,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 3086 transitions. [2022-07-13 21:18:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:11,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:11,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:11,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:18:11,316 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:11,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash 369308848, now seen corresponding path program 1 times [2022-07-13 21:18:11,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:11,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569723504] [2022-07-13 21:18:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:11,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:11,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:11,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:11,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569723504] [2022-07-13 21:18:11,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569723504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:11,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:11,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:11,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216261297] [2022-07-13 21:18:11,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:11,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:11,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:11,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:11,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:11,435 INFO L87 Difference]: Start difference. First operand 1952 states and 3086 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:14,620 INFO L93 Difference]: Finished difference Result 6751 states and 10823 transitions. [2022-07-13 21:18:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:14,639 INFO L225 Difference]: With dead ends: 6751 [2022-07-13 21:18:14,639 INFO L226 Difference]: Without dead ends: 4821 [2022-07-13 21:18:14,645 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 [2022-07-13 21:18:14,645 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 1702 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3347 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 3434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:14,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 3169 Invalid, 3434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3347 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:18:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2022-07-13 21:18:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 3471. [2022-07-13 21:18:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3471 states, 3203 states have (on average 1.5735248204807992) internal successors, (5040), 3213 states have internal predecessors, (5040), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-13 21:18:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 5483 transitions. [2022-07-13 21:18:14,885 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 5483 transitions. Word has length 190 [2022-07-13 21:18:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:14,885 INFO L495 AbstractCegarLoop]: Abstraction has 3471 states and 5483 transitions. [2022-07-13 21:18:14,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 5483 transitions. [2022-07-13 21:18:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:14,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:14,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:14,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:18:14,888 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:14,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:14,889 INFO L85 PathProgramCache]: Analyzing trace with hash 939580654, now seen corresponding path program 1 times [2022-07-13 21:18:14,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:14,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632542445] [2022-07-13 21:18:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:14,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:14,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:15,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632542445] [2022-07-13 21:18:15,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632542445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:15,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:15,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:15,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514718741] [2022-07-13 21:18:15,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:15,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:15,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:15,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:15,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:15,013 INFO L87 Difference]: Start difference. First operand 3471 states and 5483 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:18,433 INFO L93 Difference]: Finished difference Result 12344 states and 19754 transitions. [2022-07-13 21:18:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:18,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:18,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:18,454 INFO L225 Difference]: With dead ends: 12344 [2022-07-13 21:18:18,455 INFO L226 Difference]: Without dead ends: 8895 [2022-07-13 21:18:18,464 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 [2022-07-13 21:18:18,465 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 1697 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 3415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:18,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 3161 Invalid, 3415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:18:18,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8895 states. [2022-07-13 21:18:18,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8895 to 6522. [2022-07-13 21:18:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6522 states, 6022 states have (on average 1.570906675523082) internal successors, (9460), 6040 states have internal predecessors, (9460), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-13 21:18:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6522 states to 6522 states and 10317 transitions. [2022-07-13 21:18:18,926 INFO L78 Accepts]: Start accepts. Automaton has 6522 states and 10317 transitions. Word has length 190 [2022-07-13 21:18:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:18,927 INFO L495 AbstractCegarLoop]: Abstraction has 6522 states and 10317 transitions. [2022-07-13 21:18:18,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 6522 states and 10317 transitions. [2022-07-13 21:18:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:18,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:18,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:18,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:18:18,931 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash 153582764, now seen corresponding path program 1 times [2022-07-13 21:18:18,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:18,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648232944] [2022-07-13 21:18:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:18,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:18,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:19,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:19,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648232944] [2022-07-13 21:18:19,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648232944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:19,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:19,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:19,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785323545] [2022-07-13 21:18:19,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:19,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:19,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:19,058 INFO L87 Difference]: Start difference. First operand 6522 states and 10317 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:22,913 INFO L93 Difference]: Finished difference Result 23547 states and 37706 transitions. [2022-07-13 21:18:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:22,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:22,959 INFO L225 Difference]: With dead ends: 23547 [2022-07-13 21:18:22,959 INFO L226 Difference]: Without dead ends: 17047 [2022-07-13 21:18:22,974 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 [2022-07-13 21:18:22,974 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1813 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:22,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 2165 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 21:18:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17047 states. [2022-07-13 21:18:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17047 to 12637. [2022-07-13 21:18:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12637 states, 11673 states have (on average 1.5692624004112052) internal successors, (18318), 11707 states have internal predecessors, (18318), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-13 21:18:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12637 states to 12637 states and 20057 transitions. [2022-07-13 21:18:23,921 INFO L78 Accepts]: Start accepts. Automaton has 12637 states and 20057 transitions. Word has length 190 [2022-07-13 21:18:23,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:23,921 INFO L495 AbstractCegarLoop]: Abstraction has 12637 states and 20057 transitions. [2022-07-13 21:18:23,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 12637 states and 20057 transitions. [2022-07-13 21:18:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:23,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:23,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:23,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:18:23,928 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:23,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash 820964654, now seen corresponding path program 1 times [2022-07-13 21:18:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:23,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455666172] [2022-07-13 21:18:23,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:23,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:23,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:24,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:24,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455666172] [2022-07-13 21:18:24,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455666172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:24,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:24,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:24,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023005614] [2022-07-13 21:18:24,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:24,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:24,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:24,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:24,059 INFO L87 Difference]: Start difference. First operand 12637 states and 20057 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:29,605 INFO L93 Difference]: Finished difference Result 45952 states and 73800 transitions. [2022-07-13 21:18:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:29,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:29,695 INFO L225 Difference]: With dead ends: 45952 [2022-07-13 21:18:29,695 INFO L226 Difference]: Without dead ends: 33337 [2022-07-13 21:18:29,724 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 [2022-07-13 21:18:29,724 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 1695 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3311 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 3399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:29,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 3151 Invalid, 3399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3311 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:18:29,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33337 states. [2022-07-13 21:18:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33337 to 24898. [2022-07-13 21:18:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24898 states, 23006 states have (on average 1.568286533947666) internal successors, (36080), 23072 states have internal predecessors, (36080), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-13 21:18:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24898 states to 24898 states and 39745 transitions. [2022-07-13 21:18:31,710 INFO L78 Accepts]: Start accepts. Automaton has 24898 states and 39745 transitions. Word has length 190 [2022-07-13 21:18:31,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:31,710 INFO L495 AbstractCegarLoop]: Abstraction has 24898 states and 39745 transitions. [2022-07-13 21:18:31,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:31,711 INFO L276 IsEmpty]: Start isEmpty. Operand 24898 states and 39745 transitions. [2022-07-13 21:18:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:31,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:31,721 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:31,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:18:31,721 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1374264212, now seen corresponding path program 1 times [2022-07-13 21:18:31,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:31,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486269782] [2022-07-13 21:18:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:31,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:31,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:31,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:31,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:31,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:31,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486269782] [2022-07-13 21:18:31,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486269782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:31,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:31,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:31,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175963304] [2022-07-13 21:18:31,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:31,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:31,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:31,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:31,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:31,852 INFO L87 Difference]: Start difference. First operand 24898 states and 39745 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:36,209 INFO L93 Difference]: Finished difference Result 58766 states and 95238 transitions. [2022-07-13 21:18:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:18:36,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:36,298 INFO L225 Difference]: With dead ends: 58766 [2022-07-13 21:18:36,298 INFO L226 Difference]: Without dead ends: 33890 [2022-07-13 21:18:36,340 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 [2022-07-13 21:18:36,341 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1217 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:36,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1717 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:18:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33890 states. [2022-07-13 21:18:38,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33890 to 24898. [2022-07-13 21:18:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24898 states, 23006 states have (on average 1.5654611840389463) internal successors, (36015), 23072 states have internal predecessors, (36015), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-13 21:18:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24898 states to 24898 states and 39680 transitions. [2022-07-13 21:18:38,436 INFO L78 Accepts]: Start accepts. Automaton has 24898 states and 39680 transitions. Word has length 190 [2022-07-13 21:18:38,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:38,436 INFO L495 AbstractCegarLoop]: Abstraction has 24898 states and 39680 transitions. [2022-07-13 21:18:38,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 24898 states and 39680 transitions. [2022-07-13 21:18:38,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:38,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:38,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:38,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:18:38,446 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:38,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:38,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1029436050, now seen corresponding path program 1 times [2022-07-13 21:18:38,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:38,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960244737] [2022-07-13 21:18:38,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:38,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:38,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960244737] [2022-07-13 21:18:38,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960244737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:38,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:38,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979966659] [2022-07-13 21:18:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:38,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:38,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:38,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:38,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:38,564 INFO L87 Difference]: Start difference. First operand 24898 states and 39680 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:47,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:18:47,564 INFO L93 Difference]: Finished difference Result 90697 states and 146134 transitions. [2022-07-13 21:18:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:18:47,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:18:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:18:47,768 INFO L225 Difference]: With dead ends: 90697 [2022-07-13 21:18:47,768 INFO L226 Difference]: Without dead ends: 65821 [2022-07-13 21:18:47,839 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 [2022-07-13 21:18:47,840 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1687 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:18:47,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 3140 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:18:47,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65821 states. [2022-07-13 21:18:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65821 to 49548. [2022-07-13 21:18:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49548 states, 45800 states have (on average 1.5640829694323144) internal successors, (71635), 45930 states have internal predecessors, (71635), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-13 21:18:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49548 states to 49548 states and 79638 transitions. [2022-07-13 21:18:51,931 INFO L78 Accepts]: Start accepts. Automaton has 49548 states and 79638 transitions. Word has length 190 [2022-07-13 21:18:51,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:51,932 INFO L495 AbstractCegarLoop]: Abstraction has 49548 states and 79638 transitions. [2022-07-13 21:18:51,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:18:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 49548 states and 79638 transitions. [2022-07-13 21:18:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:18:51,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:51,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:18:51,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:18:51,949 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:51,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash -48481236, now seen corresponding path program 1 times [2022-07-13 21:18:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:51,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872788117] [2022-07-13 21:18:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:51,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:51,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:18:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:18:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:18:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:18:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:52,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:52,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872788117] [2022-07-13 21:18:52,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872788117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:52,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:52,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946618671] [2022-07-13 21:18:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:52,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:52,058 INFO L87 Difference]: Start difference. First operand 49548 states and 79638 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:19:07,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:19:07,540 INFO L93 Difference]: Finished difference Result 180321 states and 293182 transitions. [2022-07-13 21:19:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:19:07,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-07-13 21:19:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:19:07,955 INFO L225 Difference]: With dead ends: 180321 [2022-07-13 21:19:07,955 INFO L226 Difference]: Without dead ends: 130795 [2022-07-13 21:19:08,131 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 [2022-07-13 21:19:08,132 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 1686 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 3364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:19:08,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 3135 Invalid, 3364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:19:08,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130795 states. [2022-07-13 21:19:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130795 to 98973. [2022-07-13 21:19:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98973 states, 91513 states have (on average 1.5632860905008032) internal successors, (143061), 91771 states have internal predecessors, (143061), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-13 21:19:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98973 states to 98973 states and 161198 transitions. [2022-07-13 21:19:16,869 INFO L78 Accepts]: Start accepts. Automaton has 98973 states and 161198 transitions. Word has length 190 [2022-07-13 21:19:16,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:19:16,870 INFO L495 AbstractCegarLoop]: Abstraction has 98973 states and 161198 transitions. [2022-07-13 21:19:16,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2022-07-13 21:19:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 98973 states and 161198 transitions. [2022-07-13 21:19:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:19:16,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:19:16,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:19:16,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:19:16,903 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:19:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:19:16,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1817952850, now seen corresponding path program 1 times [2022-07-13 21:19:16,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:19:16,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710527755] [2022-07-13 21:19:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:19:16,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:19:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:19:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:19:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:19:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:17,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:19:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:17,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:19:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:19:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:19:17,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:19:17,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710527755] [2022-07-13 21:19:17,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710527755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:19:17,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:19:17,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:19:17,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386767814] [2022-07-13 21:19:17,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:19:17,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:19:17,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:19:17,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:19:17,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:19:17,011 INFO L87 Difference]: Start difference. First operand 98973 states and 161198 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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)