./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.07.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 b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:10:39,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:10:39,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:10:39,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:10:39,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:10:39,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:10:39,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:10:39,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:10:39,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:10:39,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:10:39,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:10:39,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:10:39,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:10:39,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:10:39,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:10:39,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:10:39,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:10:39,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:10:39,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:10:39,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:10:39,670 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:10:39,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:10:39,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:10:39,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:10:39,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:10:39,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:10:39,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:10:39,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:10:39,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:10:39,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:10:39,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:10:39,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:10:39,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:10:39,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:10:39,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:10:39,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:10:39,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:10:39,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:10:39,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:10:39,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:10:39,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:10:39,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:10:39,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:10:39,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:10:39,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:10:39,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:10:39,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:10:39,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:10:39,713 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:10:39,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:10:39,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:10:39,714 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:10:39,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:10:39,715 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:10:39,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:10:39,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:10:39,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:10:39,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:10:39,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:10:39,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:10:39,716 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:10:39,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:10:39,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:10:39,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:10:39,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:10:39,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:10:39,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:10:39,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:10:39,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:10:39,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:10:39,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:10:39,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:10:39,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:10:39,718 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:10:39,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:10:39,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:10:39,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 [2022-07-21 08:10:39,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:10:39,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:10:39,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:10:39,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:10:39,993 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:10:39,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-07-21 08:10:40,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898c420f5/074e53786a4448009c638b43df7f58e2/FLAG734295f46 [2022-07-21 08:10:40,478 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:10:40,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-07-21 08:10:40,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898c420f5/074e53786a4448009c638b43df7f58e2/FLAG734295f46 [2022-07-21 08:10:40,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898c420f5/074e53786a4448009c638b43df7f58e2 [2022-07-21 08:10:40,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:10:40,521 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:10:40,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:10:40,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:10:40,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:10:40,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:40,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12adabbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40, skipping insertion in model container [2022-07-21 08:10:40,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:40,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:10:40,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:10:40,656 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.07.cil-1.c[911,924] [2022-07-21 08:10:40,752 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.07.cil-1.c[8416,8429] [2022-07-21 08:10:40,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:10:40,835 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:10:40,850 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.07.cil-1.c[911,924] [2022-07-21 08:10:40,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2022-07-21 08:10:40,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:10:40,934 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:10:40,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40 WrapperNode [2022-07-21 08:10:40,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:10:40,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:10:40,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:10:40,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:10:40,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:40,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:40,990 INFO L137 Inliner]: procedures = 69, calls = 82, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 788 [2022-07-21 08:10:40,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:10:40,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:10:40,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:10:40,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:10:41,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:41,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:41,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:41,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:41,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:41,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:41,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:41,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:10:41,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:10:41,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:10:41,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:10:41,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (1/1) ... [2022-07-21 08:10:41,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:10:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:10:41,108 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) [2022-07-21 08:10:41,134 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 [2022-07-21 08:10:41,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:10:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:10:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:10:41,148 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:10:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:10:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:10:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:10:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:10:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:10:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:10:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:10:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:10:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:10:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:10:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:10:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:10:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:10:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:10:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:10:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:10:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:10:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:10:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:10:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:10:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:10:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:10:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:10:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:10:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:10:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:10:41,152 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:10:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:10:41,286 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:10:41,300 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:10:41,807 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-21 08:10:41,807 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; [2022-07-21 08:10:41,873 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:10:41,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:10:41,894 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-21 08:10:41,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:10:41 BoogieIcfgContainer [2022-07-21 08:10:41,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:10:41,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:10:41,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:10:41,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:10:41,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:10:40" (1/3) ... [2022-07-21 08:10:41,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c9535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:10:41, skipping insertion in model container [2022-07-21 08:10:41,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:40" (2/3) ... [2022-07-21 08:10:41,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c9535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:10:41, skipping insertion in model container [2022-07-21 08:10:41,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:10:41" (3/3) ... [2022-07-21 08:10:41,903 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-07-21 08:10:41,912 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:10:41,912 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:10:41,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:10:41,980 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@33b00121, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2849ab16 [2022-07-21 08:10:41,981 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:10:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-21 08:10:41,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:42,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:42,006 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] [2022-07-21 08:10:42,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:42,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:42,010 INFO L85 PathProgramCache]: Analyzing trace with hash -334337363, now seen corresponding path program 1 times [2022-07-21 08:10:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:42,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882595674] [2022-07-21 08:10:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:42,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:42,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882595674] [2022-07-21 08:10:42,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882595674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:42,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:42,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:10:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129942699] [2022-07-21 08:10:42,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:42,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:10:42,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:10:42,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:10:42,371 INFO L87 Difference]: Start difference. First operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-07-21 08:10:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:42,960 INFO L93 Difference]: Finished difference Result 743 states and 1170 transitions. [2022-07-21 08:10:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:10:42,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 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 65 [2022-07-21 08:10:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:42,978 INFO L225 Difference]: With dead ends: 743 [2022-07-21 08:10:42,978 INFO L226 Difference]: Without dead ends: 382 [2022-07-21 08:10:42,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:10:42,987 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 586 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:42,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1507 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:10:43,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-21 08:10:43,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-21 08:10:43,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 312 states have (on average 1.5224358974358974) internal successors, (475), 316 states have internal predecessors, (475), 37 states have call successors, (37), 14 states have call predecessors, (37), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-21 08:10:43,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 547 transitions. [2022-07-21 08:10:43,048 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 547 transitions. Word has length 65 [2022-07-21 08:10:43,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:43,049 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 547 transitions. [2022-07-21 08:10:43,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-07-21 08:10:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 547 transitions. [2022-07-21 08:10:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:43,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:43,054 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] [2022-07-21 08:10:43,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:10:43,054 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1721122773, now seen corresponding path program 1 times [2022-07-21 08:10:43,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:43,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201654020] [2022-07-21 08:10:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:43,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:43,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201654020] [2022-07-21 08:10:43,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201654020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:43,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:43,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:10:43,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242526124] [2022-07-21 08:10:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:43,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:10:43,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:43,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:10:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:10:43,165 INFO L87 Difference]: Start difference. First operand 364 states and 547 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:43,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:43,887 INFO L93 Difference]: Finished difference Result 619 states and 916 transitions. [2022-07-21 08:10:43,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:43,889 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 [2022-07-21 08:10:43,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:43,892 INFO L225 Difference]: With dead ends: 619 [2022-07-21 08:10:43,892 INFO L226 Difference]: Without dead ends: 515 [2022-07-21 08:10:43,892 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 [2022-07-21 08:10:43,893 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 974 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:43,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1812 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:10:43,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-21 08:10:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 476. [2022-07-21 08:10:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 402 states have (on average 1.4950248756218905) internal successors, (601), 408 states have internal predecessors, (601), 50 states have call successors, (50), 21 states have call predecessors, (50), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-07-21 08:10:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 704 transitions. [2022-07-21 08:10:43,918 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 704 transitions. Word has length 65 [2022-07-21 08:10:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:43,918 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 704 transitions. [2022-07-21 08:10:43,918 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) [2022-07-21 08:10:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 704 transitions. [2022-07-21 08:10:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:43,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:43,920 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] [2022-07-21 08:10:43,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:10:43,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:43,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash -42234133, now seen corresponding path program 1 times [2022-07-21 08:10:43,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:43,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363075814] [2022-07-21 08:10:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:43,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:44,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:44,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363075814] [2022-07-21 08:10:44,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363075814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:44,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:44,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:10:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601460535] [2022-07-21 08:10:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:44,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:10:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:10:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:10:44,014 INFO L87 Difference]: Start difference. First operand 476 states and 704 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:44,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:44,835 INFO L93 Difference]: Finished difference Result 873 states and 1269 transitions. [2022-07-21 08:10:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:10:44,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:10:44,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:44,838 INFO L225 Difference]: With dead ends: 873 [2022-07-21 08:10:44,838 INFO L226 Difference]: Without dead ends: 664 [2022-07-21 08:10:44,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:10:44,840 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1064 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:44,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 2219 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:10:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-21 08:10:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 588. [2022-07-21 08:10:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 492 states have (on average 1.475609756097561) internal successors, (726), 500 states have internal predecessors, (726), 63 states have call successors, (63), 28 states have call predecessors, (63), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2022-07-21 08:10:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 863 transitions. [2022-07-21 08:10:44,882 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 863 transitions. Word has length 65 [2022-07-21 08:10:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:44,882 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 863 transitions. [2022-07-21 08:10:44,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 863 transitions. [2022-07-21 08:10:44,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:44,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:44,885 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] [2022-07-21 08:10:44,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:10:44,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:44,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:44,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2070820243, now seen corresponding path program 1 times [2022-07-21 08:10:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:44,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008857205] [2022-07-21 08:10:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:44,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:44,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:44,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008857205] [2022-07-21 08:10:44,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008857205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:44,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:44,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:10:44,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893097245] [2022-07-21 08:10:44,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:44,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:10:44,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:44,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:10:44,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:10:44,963 INFO L87 Difference]: Start difference. First operand 588 states and 863 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) [2022-07-21 08:10:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:46,348 INFO L93 Difference]: Finished difference Result 2134 states and 3060 transitions. [2022-07-21 08:10:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:10:46,348 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 [2022-07-21 08:10:46,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:46,355 INFO L225 Difference]: With dead ends: 2134 [2022-07-21 08:10:46,355 INFO L226 Difference]: Without dead ends: 1801 [2022-07-21 08:10:46,360 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 [2022-07-21 08:10:46,366 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 2953 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:46,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 2565 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:46,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-07-21 08:10:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1641. [2022-07-21 08:10:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1340 states have (on average 1.3970149253731343) internal successors, (1872), 1363 states have internal predecessors, (1872), 173 states have call successors, (173), 111 states have call predecessors, (173), 126 states have return successors, (207), 169 states have call predecessors, (207), 171 states have call successors, (207) [2022-07-21 08:10:46,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2252 transitions. [2022-07-21 08:10:46,430 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2252 transitions. Word has length 65 [2022-07-21 08:10:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:46,430 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2252 transitions. [2022-07-21 08:10:46,430 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) [2022-07-21 08:10:46,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2252 transitions. [2022-07-21 08:10:46,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:10:46,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:46,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:46,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:10:46,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:46,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:46,433 INFO L85 PathProgramCache]: Analyzing trace with hash 160145276, now seen corresponding path program 1 times [2022-07-21 08:10:46,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:46,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231093123] [2022-07-21 08:10:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:46,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:10:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:10:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:46,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:46,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231093123] [2022-07-21 08:10:46,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231093123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:46,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:46,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:10:46,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125335795] [2022-07-21 08:10:46,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:46,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:10:46,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:10:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:46,514 INFO L87 Difference]: Start difference. First operand 1641 states and 2252 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) [2022-07-21 08:10:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:47,206 INFO L93 Difference]: Finished difference Result 3257 states and 4472 transitions. [2022-07-21 08:10:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:10:47,207 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 [2022-07-21 08:10:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:47,213 INFO L225 Difference]: With dead ends: 3257 [2022-07-21 08:10:47,214 INFO L226 Difference]: Without dead ends: 1877 [2022-07-21 08:10:47,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:47,216 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 682 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:47,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 2146 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:10:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-07-21 08:10:47,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1711. [2022-07-21 08:10:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1396 states have (on average 1.3810888252148996) internal successors, (1928), 1419 states have internal predecessors, (1928), 173 states have call successors, (173), 111 states have call predecessors, (173), 140 states have return successors, (221), 183 states have call predecessors, (221), 171 states have call successors, (221) [2022-07-21 08:10:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2322 transitions. [2022-07-21 08:10:47,267 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2322 transitions. Word has length 66 [2022-07-21 08:10:47,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:47,268 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 2322 transitions. [2022-07-21 08:10:47,268 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) [2022-07-21 08:10:47,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2322 transitions. [2022-07-21 08:10:47,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:10:47,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:47,269 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] [2022-07-21 08:10:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:10:47,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1226058118, now seen corresponding path program 1 times [2022-07-21 08:10:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:47,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731929499] [2022-07-21 08:10:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:47,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:10:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:10:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:47,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:47,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731929499] [2022-07-21 08:10:47,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731929499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:47,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:47,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:10:47,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903783302] [2022-07-21 08:10:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:47,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:10:47,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:47,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:10:47,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:47,360 INFO L87 Difference]: Start difference. First operand 1711 states and 2322 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) [2022-07-21 08:10:48,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:48,174 INFO L93 Difference]: Finished difference Result 3325 states and 4495 transitions. [2022-07-21 08:10:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:10:48,174 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 [2022-07-21 08:10:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:48,181 INFO L225 Difference]: With dead ends: 3325 [2022-07-21 08:10:48,181 INFO L226 Difference]: Without dead ends: 1875 [2022-07-21 08:10:48,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:48,185 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 466 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:48,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2387 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:10:48,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2022-07-21 08:10:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1751. [2022-07-21 08:10:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1428 states have (on average 1.3683473389355743) internal successors, (1954), 1451 states have internal predecessors, (1954), 173 states have call successors, (173), 111 states have call predecessors, (173), 148 states have return successors, (229), 191 states have call predecessors, (229), 171 states have call successors, (229) [2022-07-21 08:10:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2356 transitions. [2022-07-21 08:10:48,274 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2356 transitions. Word has length 66 [2022-07-21 08:10:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:48,274 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 2356 transitions. [2022-07-21 08:10:48,275 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) [2022-07-21 08:10:48,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2356 transitions. [2022-07-21 08:10:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:10:48,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:48,275 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] [2022-07-21 08:10:48,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:10:48,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:48,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2039549880, now seen corresponding path program 1 times [2022-07-21 08:10:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:48,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910593221] [2022-07-21 08:10:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:48,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:48,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:10:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:10:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:48,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:48,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910593221] [2022-07-21 08:10:48,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910593221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:48,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:48,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:10:48,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148882759] [2022-07-21 08:10:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:10:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:10:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:10:48,341 INFO L87 Difference]: Start difference. First operand 1751 states and 2356 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) [2022-07-21 08:10:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:49,725 INFO L93 Difference]: Finished difference Result 5485 states and 7458 transitions. [2022-07-21 08:10:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:10:49,726 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 [2022-07-21 08:10:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:49,735 INFO L225 Difference]: With dead ends: 5485 [2022-07-21 08:10:49,735 INFO L226 Difference]: Without dead ends: 2148 [2022-07-21 08:10:49,740 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 [2022-07-21 08:10:49,741 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 3039 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:49,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 2604 Invalid, 2343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [642 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:10:49,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-07-21 08:10:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1952. [2022-07-21 08:10:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1559 states have (on average 1.3290570878768442) internal successors, (2072), 1584 states have internal predecessors, (2072), 213 states have call successors, (213), 139 states have call predecessors, (213), 178 states have return successors, (273), 231 states have call predecessors, (273), 211 states have call successors, (273) [2022-07-21 08:10:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2558 transitions. [2022-07-21 08:10:49,812 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2558 transitions. Word has length 66 [2022-07-21 08:10:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:49,812 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2558 transitions. [2022-07-21 08:10:49,812 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) [2022-07-21 08:10:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2558 transitions. [2022-07-21 08:10:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:10:49,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:49,817 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] [2022-07-21 08:10:49,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:10:49,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:49,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1663597100, now seen corresponding path program 1 times [2022-07-21 08:10:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:49,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413320081] [2022-07-21 08:10:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:49,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:10:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:10:49,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:49,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413320081] [2022-07-21 08:10:49,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413320081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:49,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:49,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:10:49,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289749122] [2022-07-21 08:10:49,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:10:49,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:49,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:10:49,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:10:49,901 INFO L87 Difference]: Start difference. First operand 1952 states and 2558 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-21 08:10:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:50,661 INFO L93 Difference]: Finished difference Result 3489 states and 4546 transitions. [2022-07-21 08:10:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 08:10:50,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2022-07-21 08:10:50,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:50,668 INFO L225 Difference]: With dead ends: 3489 [2022-07-21 08:10:50,668 INFO L226 Difference]: Without dead ends: 2036 [2022-07-21 08:10:50,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-07-21 08:10:50,671 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1079 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:50,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1903 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:10:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-07-21 08:10:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1731. [2022-07-21 08:10:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3306973400431343) internal successors, (1851), 1411 states have internal predecessors, (1851), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-07-21 08:10:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2269 transitions. [2022-07-21 08:10:50,752 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2269 transitions. Word has length 91 [2022-07-21 08:10:50,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:50,752 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2269 transitions. [2022-07-21 08:10:50,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-21 08:10:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2269 transitions. [2022-07-21 08:10:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:10:50,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:50,754 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] [2022-07-21 08:10:50,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:10:50,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:50,755 INFO L85 PathProgramCache]: Analyzing trace with hash -692208150, now seen corresponding path program 1 times [2022-07-21 08:10:50,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:50,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348832380] [2022-07-21 08:10:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:50,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:50,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:50,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:50,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:10:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:50,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:10:50,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:50,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348832380] [2022-07-21 08:10:50,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348832380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:50,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:50,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:50,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612471988] [2022-07-21 08:10:50,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:50,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:50,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:50,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:50,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:50,830 INFO L87 Difference]: Start difference. First operand 1731 states and 2269 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) [2022-07-21 08:10:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:51,047 INFO L93 Difference]: Finished difference Result 3307 states and 4329 transitions. [2022-07-21 08:10:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:10:51,047 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 [2022-07-21 08:10:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:51,058 INFO L225 Difference]: With dead ends: 3307 [2022-07-21 08:10:51,059 INFO L226 Difference]: Without dead ends: 1838 [2022-07-21 08:10:51,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:10:51,064 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1144 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:51,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1203 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:10:51,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2022-07-21 08:10:51,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1731. [2022-07-21 08:10:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3048166786484543) internal successors, (1815), 1411 states have internal predecessors, (1815), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-07-21 08:10:51,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2233 transitions. [2022-07-21 08:10:51,118 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2233 transitions. Word has length 91 [2022-07-21 08:10:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:51,119 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2233 transitions. [2022-07-21 08:10:51,119 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) [2022-07-21 08:10:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2233 transitions. [2022-07-21 08:10:51,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 08:10:51,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:51,120 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] [2022-07-21 08:10:51,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:10:51,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:51,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:51,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1486977360, now seen corresponding path program 1 times [2022-07-21 08:10:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:51,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848113102] [2022-07-21 08:10:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:51,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:51,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:51,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:51,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:51,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:51,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 08:10:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:10:51,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:51,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848113102] [2022-07-21 08:10:51,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848113102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:51,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:51,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:10:51,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264956086] [2022-07-21 08:10:51,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:51,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:10:51,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:51,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:10:51,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:51,225 INFO L87 Difference]: Start difference. First operand 1731 states and 2233 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) [2022-07-21 08:10:52,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:52,141 INFO L93 Difference]: Finished difference Result 4157 states and 5338 transitions. [2022-07-21 08:10:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:10:52,142 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 [2022-07-21 08:10:52,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:52,149 INFO L225 Difference]: With dead ends: 4157 [2022-07-21 08:10:52,150 INFO L226 Difference]: Without dead ends: 2533 [2022-07-21 08:10:52,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-21 08:10:52,153 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2020 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:52,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 1717 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:10:52,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2022-07-21 08:10:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2338. [2022-07-21 08:10:52,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2711496746203905) internal successors, (2344), 1879 states have internal predecessors, (2344), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-07-21 08:10:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2972 transitions. [2022-07-21 08:10:52,259 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2972 transitions. Word has length 92 [2022-07-21 08:10:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:52,260 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2972 transitions. [2022-07-21 08:10:52,260 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) [2022-07-21 08:10:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2972 transitions. [2022-07-21 08:10:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:10:52,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:52,262 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] [2022-07-21 08:10:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:10:52,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:52,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash 330043274, now seen corresponding path program 1 times [2022-07-21 08:10:52,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:52,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568718881] [2022-07-21 08:10:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:10:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:10:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:52,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:52,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568718881] [2022-07-21 08:10:52,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568718881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:52,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:52,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:10:52,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141646124] [2022-07-21 08:10:52,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:52,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:10:52,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:52,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:10:52,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:10:52,332 INFO L87 Difference]: Start difference. First operand 2338 states and 2972 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:53,107 INFO L93 Difference]: Finished difference Result 2671 states and 3504 transitions. [2022-07-21 08:10:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:10:53,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:10:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:53,117 INFO L225 Difference]: With dead ends: 2671 [2022-07-21 08:10:53,118 INFO L226 Difference]: Without dead ends: 2425 [2022-07-21 08:10:53,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:53,120 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 765 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:53,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1022 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:10:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-07-21 08:10:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2338. [2022-07-21 08:10:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2706073752711498) internal successors, (2343), 1879 states have internal predecessors, (2343), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-07-21 08:10:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2971 transitions. [2022-07-21 08:10:53,243 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2971 transitions. Word has length 123 [2022-07-21 08:10:53,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:53,243 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2971 transitions. [2022-07-21 08:10:53,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:53,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2971 transitions. [2022-07-21 08:10:53,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:10:53,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:53,245 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] [2022-07-21 08:10:53,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:10:53,245 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:53,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:53,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1598888952, now seen corresponding path program 1 times [2022-07-21 08:10:53,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:53,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995640971] [2022-07-21 08:10:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:53,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:53,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:53,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:10:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:53,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:53,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:10:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:53,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:53,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:53,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995640971] [2022-07-21 08:10:53,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995640971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:53,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:53,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:10:53,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118570037] [2022-07-21 08:10:53,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:53,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:10:53,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:53,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:10:53,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:10:53,333 INFO L87 Difference]: Start difference. First operand 2338 states and 2971 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:54,553 INFO L93 Difference]: Finished difference Result 2994 states and 4018 transitions. [2022-07-21 08:10:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:10:54,554 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:10:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:54,563 INFO L225 Difference]: With dead ends: 2994 [2022-07-21 08:10:54,563 INFO L226 Difference]: Without dead ends: 2757 [2022-07-21 08:10:54,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:10:54,565 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1216 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:54,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1492 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:54,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2022-07-21 08:10:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2584. [2022-07-21 08:10:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2067 states have (on average 1.3033381712626995) internal successors, (2694), 2103 states have internal predecessors, (2694), 278 states have call successors, (278), 174 states have call predecessors, (278), 237 states have return successors, (385), 308 states have call predecessors, (385), 276 states have call successors, (385) [2022-07-21 08:10:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3357 transitions. [2022-07-21 08:10:54,692 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3357 transitions. Word has length 123 [2022-07-21 08:10:54,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:54,693 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 3357 transitions. [2022-07-21 08:10:54,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:54,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3357 transitions. [2022-07-21 08:10:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:10:54,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:54,694 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] [2022-07-21 08:10:54,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:10:54,695 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:54,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1970514316, now seen corresponding path program 1 times [2022-07-21 08:10:54,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:54,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698098295] [2022-07-21 08:10:54,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:54,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:10:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:10:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:54,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:54,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698098295] [2022-07-21 08:10:54,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698098295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:54,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:54,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393816771] [2022-07-21 08:10:54,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:54,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:54,771 INFO L87 Difference]: Start difference. First operand 2584 states and 3357 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:56,472 INFO L93 Difference]: Finished difference Result 3582 states and 4947 transitions. [2022-07-21 08:10:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:56,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:10:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:56,483 INFO L225 Difference]: With dead ends: 3582 [2022-07-21 08:10:56,483 INFO L226 Difference]: Without dead ends: 3099 [2022-07-21 08:10:56,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:56,485 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 1226 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:56,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 2250 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:10:56,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2022-07-21 08:10:56,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2813. [2022-07-21 08:10:56,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2273 states have (on average 1.3246810382754068) internal successors, (3011), 2310 states have internal predecessors, (3011), 294 states have call successors, (294), 180 states have call predecessors, (294), 244 states have return successors, (403), 325 states have call predecessors, (403), 292 states have call successors, (403) [2022-07-21 08:10:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3708 transitions. [2022-07-21 08:10:56,620 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3708 transitions. Word has length 123 [2022-07-21 08:10:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:56,620 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 3708 transitions. [2022-07-21 08:10:56,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3708 transitions. [2022-07-21 08:10:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:10:56,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:56,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:56,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:10:56,622 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:56,623 INFO L85 PathProgramCache]: Analyzing trace with hash -935158966, now seen corresponding path program 1 times [2022-07-21 08:10:56,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:56,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367560690] [2022-07-21 08:10:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:56,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:10:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:10:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:56,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:56,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367560690] [2022-07-21 08:10:56,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367560690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:56,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:56,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:56,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367845198] [2022-07-21 08:10:56,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:56,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:56,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:56,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:56,716 INFO L87 Difference]: Start difference. First operand 2813 states and 3708 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:58,427 INFO L93 Difference]: Finished difference Result 4448 states and 6306 transitions. [2022-07-21 08:10:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:58,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:10:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:58,439 INFO L225 Difference]: With dead ends: 4448 [2022-07-21 08:10:58,439 INFO L226 Difference]: Without dead ends: 3736 [2022-07-21 08:10:58,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:58,442 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1295 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:58,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1677 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:10:58,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-07-21 08:10:58,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3272. [2022-07-21 08:10:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 2686 states have (on average 1.3574087862993298) internal successors, (3646), 2725 states have internal predecessors, (3646), 326 states have call successors, (326), 192 states have call predecessors, (326), 258 states have return successors, (443), 359 states have call predecessors, (443), 324 states have call successors, (443) [2022-07-21 08:10:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4415 transitions. [2022-07-21 08:10:58,604 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4415 transitions. Word has length 123 [2022-07-21 08:10:58,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:58,605 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 4415 transitions. [2022-07-21 08:10:58,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:58,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4415 transitions. [2022-07-21 08:10:58,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:10:58,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:58,606 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] [2022-07-21 08:10:58,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:10:58,607 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:58,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:58,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1326414284, now seen corresponding path program 1 times [2022-07-21 08:10:58,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:58,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730475358] [2022-07-21 08:10:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:58,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:58,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:58,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:10:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:58,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:58,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:10:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:58,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:58,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730475358] [2022-07-21 08:10:58,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730475358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:58,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:58,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:58,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128492102] [2022-07-21 08:10:58,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:58,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:58,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:58,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:58,686 INFO L87 Difference]: Start difference. First operand 3272 states and 4415 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:00,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:00,610 INFO L93 Difference]: Finished difference Result 6115 states and 8909 transitions. [2022-07-21 08:11:00,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:11:00,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:00,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:00,624 INFO L225 Difference]: With dead ends: 6115 [2022-07-21 08:11:00,624 INFO L226 Difference]: Without dead ends: 4944 [2022-07-21 08:11:00,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:11:00,628 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1221 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:00,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 2238 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:11:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2022-07-21 08:11:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4191. [2022-07-21 08:11:00,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3993737546256761) internal successors, (4916), 3556 states have internal predecessors, (4916), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-21 08:11:00,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5835 transitions. [2022-07-21 08:11:00,798 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5835 transitions. Word has length 123 [2022-07-21 08:11:00,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:00,798 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5835 transitions. [2022-07-21 08:11:00,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:00,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5835 transitions. [2022-07-21 08:11:00,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:00,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:00,801 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] [2022-07-21 08:11:00,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:11:00,801 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:00,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:00,801 INFO L85 PathProgramCache]: Analyzing trace with hash -540294390, now seen corresponding path program 1 times [2022-07-21 08:11:00,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:00,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915964735] [2022-07-21 08:11:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:00,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:00,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:00,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915964735] [2022-07-21 08:11:00,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915964735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:00,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:00,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:00,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635430354] [2022-07-21 08:11:00,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:00,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:00,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:00,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:00,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:00,885 INFO L87 Difference]: Start difference. First operand 4191 states and 5835 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:01,975 INFO L93 Difference]: Finished difference Result 7039 states and 10364 transitions. [2022-07-21 08:11:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:11:01,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:01,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:01,990 INFO L225 Difference]: With dead ends: 7039 [2022-07-21 08:11:01,991 INFO L226 Difference]: Without dead ends: 4949 [2022-07-21 08:11:01,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:11:01,999 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 949 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:01,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1380 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:11:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2022-07-21 08:11:02,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4191. [2022-07-21 08:11:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3968118417307145) internal successors, (4907), 3556 states have internal predecessors, (4907), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-21 08:11:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5826 transitions. [2022-07-21 08:11:02,202 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5826 transitions. Word has length 123 [2022-07-21 08:11:02,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:02,203 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5826 transitions. [2022-07-21 08:11:02,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:02,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5826 transitions. [2022-07-21 08:11:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:02,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:02,205 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] [2022-07-21 08:11:02,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:11:02,205 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:02,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:02,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1357202376, now seen corresponding path program 1 times [2022-07-21 08:11:02,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:02,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864235030] [2022-07-21 08:11:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:02,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:02,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:02,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:02,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:02,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:02,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864235030] [2022-07-21 08:11:02,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864235030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:02,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:02,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:02,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118218628] [2022-07-21 08:11:02,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:02,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:02,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:02,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:02,291 INFO L87 Difference]: Start difference. First operand 4191 states and 5826 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:03,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:03,284 INFO L93 Difference]: Finished difference Result 7029 states and 10317 transitions. [2022-07-21 08:11:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:11:03,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:03,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:03,297 INFO L225 Difference]: With dead ends: 7029 [2022-07-21 08:11:03,297 INFO L226 Difference]: Without dead ends: 4939 [2022-07-21 08:11:03,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:11:03,304 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1108 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:03,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1187 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:11:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2022-07-21 08:11:03,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4191. [2022-07-21 08:11:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3942499288357528) internal successors, (4898), 3556 states have internal predecessors, (4898), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-21 08:11:03,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5817 transitions. [2022-07-21 08:11:03,507 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5817 transitions. Word has length 123 [2022-07-21 08:11:03,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:03,507 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5817 transitions. [2022-07-21 08:11:03,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:03,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5817 transitions. [2022-07-21 08:11:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:03,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:03,509 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] [2022-07-21 08:11:03,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:11:03,509 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:03,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:03,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1906724022, now seen corresponding path program 1 times [2022-07-21 08:11:03,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:03,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121543620] [2022-07-21 08:11:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:03,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:03,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:03,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:03,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:03,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:03,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121543620] [2022-07-21 08:11:03,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121543620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:03,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:03,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:03,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412014183] [2022-07-21 08:11:03,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:03,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:03,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:03,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:03,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:03,583 INFO L87 Difference]: Start difference. First operand 4191 states and 5817 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:04,662 INFO L93 Difference]: Finished difference Result 7019 states and 10270 transitions. [2022-07-21 08:11:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:11:04,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:04,673 INFO L225 Difference]: With dead ends: 7019 [2022-07-21 08:11:04,674 INFO L226 Difference]: Without dead ends: 4929 [2022-07-21 08:11:04,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:11:04,679 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 945 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:04,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1372 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:11:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4929 states. [2022-07-21 08:11:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4929 to 4191. [2022-07-21 08:11:04,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3916880159407914) internal successors, (4889), 3556 states have internal predecessors, (4889), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-21 08:11:04,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5808 transitions. [2022-07-21 08:11:04,884 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5808 transitions. Word has length 123 [2022-07-21 08:11:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:04,885 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5808 transitions. [2022-07-21 08:11:04,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5808 transitions. [2022-07-21 08:11:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:04,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:04,892 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] [2022-07-21 08:11:04,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:11:04,892 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:04,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash 481840008, now seen corresponding path program 1 times [2022-07-21 08:11:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:04,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954614271] [2022-07-21 08:11:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:04,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:04,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954614271] [2022-07-21 08:11:04,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954614271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:04,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:04,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:04,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715160241] [2022-07-21 08:11:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:04,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:04,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:04,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:04,981 INFO L87 Difference]: Start difference. First operand 4191 states and 5808 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:07,327 INFO L93 Difference]: Finished difference Result 10267 states and 15225 transitions. [2022-07-21 08:11:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:07,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:07,345 INFO L225 Difference]: With dead ends: 10267 [2022-07-21 08:11:07,346 INFO L226 Difference]: Without dead ends: 8177 [2022-07-21 08:11:07,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:07,352 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1268 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:07,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 2322 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:11:07,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2022-07-21 08:11:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 6046. [2022-07-21 08:11:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6046 states, 5192 states have (on average 1.4335516178736518) internal successors, (7443), 5243 states have internal predecessors, (7443), 510 states have call successors, (510), 264 states have call predecessors, (510), 342 states have return successors, (711), 555 states have call predecessors, (711), 508 states have call successors, (711) [2022-07-21 08:11:07,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6046 states to 6046 states and 8664 transitions. [2022-07-21 08:11:07,680 INFO L78 Accepts]: Start accepts. Automaton has 6046 states and 8664 transitions. Word has length 123 [2022-07-21 08:11:07,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:07,680 INFO L495 AbstractCegarLoop]: Abstraction has 6046 states and 8664 transitions. [2022-07-21 08:11:07,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:07,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6046 states and 8664 transitions. [2022-07-21 08:11:07,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:07,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:07,683 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] [2022-07-21 08:11:07,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:11:07,684 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:07,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:07,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2082911114, now seen corresponding path program 1 times [2022-07-21 08:11:07,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:07,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073014999] [2022-07-21 08:11:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:07,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:07,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:07,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073014999] [2022-07-21 08:11:07,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073014999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:07,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:07,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:07,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087903296] [2022-07-21 08:11:07,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:07,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:07,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:07,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:07,756 INFO L87 Difference]: Start difference. First operand 6046 states and 8664 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:10,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:10,297 INFO L93 Difference]: Finished difference Result 17532 states and 26495 transitions. [2022-07-21 08:11:10,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:10,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:10,330 INFO L225 Difference]: With dead ends: 17532 [2022-07-21 08:11:10,330 INFO L226 Difference]: Without dead ends: 13587 [2022-07-21 08:11:10,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:10,343 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1445 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:10,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 2193 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:11:10,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13587 states. [2022-07-21 08:11:10,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13587 to 9659. [2022-07-21 08:11:10,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9659 states, 8461 states have (on average 1.4670842689989363) internal successors, (12413), 8528 states have internal predecessors, (12413), 742 states have call successors, (742), 360 states have call predecessors, (742), 454 states have return successors, (1121), 803 states have call predecessors, (1121), 740 states have call successors, (1121) [2022-07-21 08:11:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9659 states to 9659 states and 14276 transitions. [2022-07-21 08:11:10,909 INFO L78 Accepts]: Start accepts. Automaton has 9659 states and 14276 transitions. Word has length 123 [2022-07-21 08:11:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:10,909 INFO L495 AbstractCegarLoop]: Abstraction has 9659 states and 14276 transitions. [2022-07-21 08:11:10,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 9659 states and 14276 transitions. [2022-07-21 08:11:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:10,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:10,915 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] [2022-07-21 08:11:10,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:11:10,915 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:10,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:10,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1026179912, now seen corresponding path program 1 times [2022-07-21 08:11:10,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:10,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795127704] [2022-07-21 08:11:10,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:10,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:10,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:10,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795127704] [2022-07-21 08:11:10,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795127704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:10,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:10,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:10,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913726797] [2022-07-21 08:11:10,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:10,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:10,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:10,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:10,998 INFO L87 Difference]: Start difference. First operand 9659 states and 14276 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:14,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:14,694 INFO L93 Difference]: Finished difference Result 31519 states and 48365 transitions. [2022-07-21 08:11:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:14,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:14,760 INFO L225 Difference]: With dead ends: 31519 [2022-07-21 08:11:14,761 INFO L226 Difference]: Without dead ends: 23961 [2022-07-21 08:11:14,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:14,787 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1306 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:14,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1737 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:11:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23961 states. [2022-07-21 08:11:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23961 to 16948. [2022-07-21 08:11:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16948 states, 15078 states have (on average 1.4919087412123624) internal successors, (22495), 15177 states have internal predecessors, (22495), 1190 states have call successors, (1190), 552 states have call predecessors, (1190), 678 states have return successors, (2087), 1283 states have call predecessors, (2087), 1188 states have call successors, (2087) [2022-07-21 08:11:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16948 states to 16948 states and 25772 transitions. [2022-07-21 08:11:15,903 INFO L78 Accepts]: Start accepts. Automaton has 16948 states and 25772 transitions. Word has length 123 [2022-07-21 08:11:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:15,904 INFO L495 AbstractCegarLoop]: Abstraction has 16948 states and 25772 transitions. [2022-07-21 08:11:15,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 16948 states and 25772 transitions. [2022-07-21 08:11:15,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:15,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:15,912 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] [2022-07-21 08:11:15,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:11:15,912 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:15,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:15,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1917402166, now seen corresponding path program 1 times [2022-07-21 08:11:15,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:15,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254806071] [2022-07-21 08:11:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:15,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:15,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:15,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254806071] [2022-07-21 08:11:15,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254806071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:15,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:15,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:15,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978913715] [2022-07-21 08:11:15,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:15,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:15,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:15,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:15,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:15,982 INFO L87 Difference]: Start difference. First operand 16948 states and 25772 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:21,151 INFO L93 Difference]: Finished difference Result 59110 states and 92163 transitions. [2022-07-21 08:11:21,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:21,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:21,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:21,284 INFO L225 Difference]: With dead ends: 59110 [2022-07-21 08:11:21,284 INFO L226 Difference]: Without dead ends: 44263 [2022-07-21 08:11:21,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:21,317 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1369 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:21,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 2185 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:11:21,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44263 states. [2022-07-21 08:11:23,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44263 to 31493. [2022-07-21 08:11:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5078591360248668) internal successors, (42689), 28474 states have internal predecessors, (42689), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-07-21 08:11:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49216 transitions. [2022-07-21 08:11:23,391 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49216 transitions. Word has length 123 [2022-07-21 08:11:23,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:23,391 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49216 transitions. [2022-07-21 08:11:23,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49216 transitions. [2022-07-21 08:11:23,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:23,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:23,407 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] [2022-07-21 08:11:23,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:11:23,407 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:23,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:23,407 INFO L85 PathProgramCache]: Analyzing trace with hash 758590216, now seen corresponding path program 1 times [2022-07-21 08:11:23,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:23,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597226827] [2022-07-21 08:11:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:23,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:23,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:23,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:23,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597226827] [2022-07-21 08:11:23,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597226827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:23,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:23,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:23,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867348767] [2022-07-21 08:11:23,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:23,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:23,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:23,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:23,516 INFO L87 Difference]: Start difference. First operand 31493 states and 49216 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:27,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:27,540 INFO L93 Difference]: Finished difference Result 69211 states and 110899 transitions. [2022-07-21 08:11:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:11:27,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:27,676 INFO L225 Difference]: With dead ends: 69211 [2022-07-21 08:11:27,676 INFO L226 Difference]: Without dead ends: 39819 [2022-07-21 08:11:27,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:11:27,737 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 946 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:27,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1350 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:11:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39819 states. [2022-07-21 08:11:29,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39819 to 31493. [2022-07-21 08:11:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5033026032284271) internal successors, (42560), 28474 states have internal predecessors, (42560), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-07-21 08:11:29,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49087 transitions. [2022-07-21 08:11:29,960 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49087 transitions. Word has length 123 [2022-07-21 08:11:29,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:29,961 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49087 transitions. [2022-07-21 08:11:29,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:29,961 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49087 transitions. [2022-07-21 08:11:29,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:29,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:29,976 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] [2022-07-21 08:11:29,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:11:29,977 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:29,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:29,977 INFO L85 PathProgramCache]: Analyzing trace with hash 730089926, now seen corresponding path program 1 times [2022-07-21 08:11:29,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:29,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546070739] [2022-07-21 08:11:29,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:29,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:29,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:30,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546070739] [2022-07-21 08:11:30,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546070739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:30,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:30,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:30,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463875646] [2022-07-21 08:11:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:30,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:30,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:30,049 INFO L87 Difference]: Start difference. First operand 31493 states and 49087 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:38,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:38,401 INFO L93 Difference]: Finished difference Result 109265 states and 173533 transitions. [2022-07-21 08:11:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:38,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:38,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:38,611 INFO L225 Difference]: With dead ends: 109265 [2022-07-21 08:11:38,612 INFO L226 Difference]: Without dead ends: 79873 [2022-07-21 08:11:38,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:38,753 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1240 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:38,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2170 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:11:38,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79873 states. [2022-07-21 08:11:43,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79873 to 60776. [2022-07-21 08:11:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60776 states, 55034 states have (on average 1.5130646509430534) internal successors, (83270), 55325 states have internal predecessors, (83270), 3718 states have call successors, (3718), 1704 states have call predecessors, (3718), 2022 states have return successors, (10639), 4003 states have call predecessors, (10639), 3716 states have call successors, (10639) [2022-07-21 08:11:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60776 states to 60776 states and 97627 transitions. [2022-07-21 08:11:43,499 INFO L78 Accepts]: Start accepts. Automaton has 60776 states and 97627 transitions. Word has length 123 [2022-07-21 08:11:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:43,499 INFO L495 AbstractCegarLoop]: Abstraction has 60776 states and 97627 transitions. [2022-07-21 08:11:43,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 60776 states and 97627 transitions. [2022-07-21 08:11:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-21 08:11:43,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:43,789 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] [2022-07-21 08:11:43,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:11:43,790 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:43,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1210492088, now seen corresponding path program 1 times [2022-07-21 08:11:43,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:43,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065011610] [2022-07-21 08:11:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:43,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:43,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:11:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 08:11:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:43,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:43,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:11:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:43,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:43,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065011610] [2022-07-21 08:11:43,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065011610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:43,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:43,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:43,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729004290] [2022-07-21 08:11:43,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:43,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:43,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:43,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:43,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:43,873 INFO L87 Difference]: Start difference. First operand 60776 states and 97627 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:11:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:58,255 INFO L93 Difference]: Finished difference Result 211314 states and 345015 transitions. [2022-07-21 08:11:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:58,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-21 08:11:58,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:58,974 INFO L225 Difference]: With dead ends: 211314 [2022-07-21 08:11:58,974 INFO L226 Difference]: Without dead ends: 152639 [2022-07-21 08:11:59,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:59,086 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 1185 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:59,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 2178 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:11:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152639 states.