./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.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_1.cil-2+token_ring.10.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78201c5527fd684bbb5ce3426a0df19562cff65b8fe2040ac04671f6137326c6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:03:24,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:03:24,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:03:24,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:03:24,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:03:24,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:03:24,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:03:24,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:03:24,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:03:24,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:03:24,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:03:24,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:03:24,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:03:24,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:03:24,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:03:24,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:03:24,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:03:24,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:03:24,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:03:24,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:03:24,925 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:03:24,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:03:24,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:03:24,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:03:24,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:03:24,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:03:24,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:03:24,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:03:24,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:03:24,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:03:24,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:03:24,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:03:24,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:03:24,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:03:24,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:03:24,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:03:24,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:03:24,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:03:24,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:03:24,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:03:24,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:03:24,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:03:24,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:03:24,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:03:24,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:03:24,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:03:24,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:03:24,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:03:24,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:03:24,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:03:24,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:03:24,980 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:03:24,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:03:24,981 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:03:24,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:03:24,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:03:24,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:03:24,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:03:24,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:03:24,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:03:24,982 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:03:24,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:03:24,982 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:03:24,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:03:24,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:03:24,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:03:24,983 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:03:24,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:03:24,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:03:24,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:03:24,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:03:24,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:03:24,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:03:24,984 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:03:24,984 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:03:24,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:03:24,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78201c5527fd684bbb5ce3426a0df19562cff65b8fe2040ac04671f6137326c6 [2022-07-21 08:03:25,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:03:25,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:03:25,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:03:25,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:03:25,303 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:03:25,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c [2022-07-21 08:03:25,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c298408/5c50856857cf451cb27aabeeb873be11/FLAG1b8c622a7 [2022-07-21 08:03:25,744 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:03:25,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c [2022-07-21 08:03:25,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c298408/5c50856857cf451cb27aabeeb873be11/FLAG1b8c622a7 [2022-07-21 08:03:26,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c298408/5c50856857cf451cb27aabeeb873be11 [2022-07-21 08:03:26,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:03:26,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:03:26,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:03:26,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:03:26,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:03:26,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4daa753f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26, skipping insertion in model container [2022-07-21 08:03:26,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:03:26,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:03:26,323 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c[913,926] [2022-07-21 08:03:26,383 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c[5977,5990] [2022-07-21 08:03:26,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:03:26,497 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:03:26,508 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c[913,926] [2022-07-21 08:03:26,520 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.10.cil-2.c[5977,5990] [2022-07-21 08:03:26,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:03:26,575 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:03:26,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26 WrapperNode [2022-07-21 08:03:26,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:03:26,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:03:26,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:03:26,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:03:26,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,652 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 939 [2022-07-21 08:03:26,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:03:26,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:03:26,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:03:26,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:03:26,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:03:26,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:03:26,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:03:26,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:03:26,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (1/1) ... [2022-07-21 08:03:26,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:03:26,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:26,749 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 08:03:26,763 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 08:03:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:03:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:03:26,788 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:03:26,788 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-21 08:03:26,789 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-21 08:03:26,789 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:03:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:03:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:03:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:03:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:03:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:03:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:03:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:03:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:03:26,790 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:03:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:03:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:03:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:03:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:03:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:03:26,791 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:03:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:03:26,935 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:03:26,943 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:03:27,601 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:03:27,615 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:03:27,615 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-07-21 08:03:27,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:03:27 BoogieIcfgContainer [2022-07-21 08:03:27,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:03:27,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:03:27,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:03:27,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:03:27,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:03:26" (1/3) ... [2022-07-21 08:03:27,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62be31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:03:27, skipping insertion in model container [2022-07-21 08:03:27,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:03:26" (2/3) ... [2022-07-21 08:03:27,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62be31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:03:27, skipping insertion in model container [2022-07-21 08:03:27,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:03:27" (3/3) ... [2022-07-21 08:03:27,624 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.10.cil-2.c [2022-07-21 08:03:27,633 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:03:27,634 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:03:27,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:03:27,701 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@4764f359, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c0bfb33 [2022-07-21 08:03:27,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:03:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 404 states, 362 states have (on average 1.6408839779005524) internal successors, (594), 367 states have internal predecessors, (594), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-07-21 08:03:27,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 08:03:27,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:27,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:27,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:27,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash -664078165, now seen corresponding path program 1 times [2022-07-21 08:03:27,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:27,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472370034] [2022-07-21 08:03:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:27,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 08:03:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:27,961 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 08:03:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:27,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472370034] [2022-07-21 08:03:27,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472370034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:27,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:27,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:27,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151225996] [2022-07-21 08:03:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:27,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:28,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:28,015 INFO L87 Difference]: Start difference. First operand has 404 states, 362 states have (on average 1.6408839779005524) internal successors, (594), 367 states have internal predecessors, (594), 30 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 08:03:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:28,431 INFO L93 Difference]: Finished difference Result 794 states and 1281 transitions. [2022-07-21 08:03:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:28,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-07-21 08:03:28,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:28,452 INFO L225 Difference]: With dead ends: 794 [2022-07-21 08:03:28,453 INFO L226 Difference]: Without dead ends: 403 [2022-07-21 08:03:28,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:28,465 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 347 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:28,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1183 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:03:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-07-21 08:03:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 394. [2022-07-21 08:03:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 354 states have (on average 1.5451977401129944) internal successors, (547), 357 states have internal predecessors, (547), 30 states have call successors, (30), 9 states have call predecessors, (30), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-21 08:03:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 605 transitions. [2022-07-21 08:03:28,547 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 605 transitions. Word has length 44 [2022-07-21 08:03:28,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:28,547 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 605 transitions. [2022-07-21 08:03:28,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 08:03:28,548 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 605 transitions. [2022-07-21 08:03:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 08:03:28,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:28,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:28,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:03:28,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:28,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:28,551 INFO L85 PathProgramCache]: Analyzing trace with hash 707729133, now seen corresponding path program 1 times [2022-07-21 08:03:28,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:28,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784090109] [2022-07-21 08:03:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:28,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:28,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 08:03:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:28,655 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 08:03:28,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:28,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784090109] [2022-07-21 08:03:28,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784090109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:28,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:28,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:28,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041314869] [2022-07-21 08:03:28,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:28,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:28,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:28,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:28,665 INFO L87 Difference]: Start difference. First operand 394 states and 605 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:28,825 INFO L93 Difference]: Finished difference Result 524 states and 788 transitions. [2022-07-21 08:03:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:28,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-21 08:03:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:28,829 INFO L225 Difference]: With dead ends: 524 [2022-07-21 08:03:28,829 INFO L226 Difference]: Without dead ends: 462 [2022-07-21 08:03:28,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:28,831 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 816 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:28,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 978 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-21 08:03:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 456. [2022-07-21 08:03:28,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 409 states have (on average 1.5183374083129584) internal successors, (621), 413 states have internal predecessors, (621), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2022-07-21 08:03:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 693 transitions. [2022-07-21 08:03:28,852 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 693 transitions. Word has length 44 [2022-07-21 08:03:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:28,853 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 693 transitions. [2022-07-21 08:03:28,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:28,853 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 693 transitions. [2022-07-21 08:03:28,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 08:03:28,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:28,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:28,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:03:28,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:28,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:28,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1229769440, now seen corresponding path program 1 times [2022-07-21 08:03:28,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:28,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857438459] [2022-07-21 08:03:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:28,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:28,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 08:03:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:28,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:28,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857438459] [2022-07-21 08:03:28,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857438459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:28,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:28,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:28,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496667619] [2022-07-21 08:03:28,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:28,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:28,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:28,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:28,918 INFO L87 Difference]: Start difference. First operand 456 states and 693 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:29,047 INFO L93 Difference]: Finished difference Result 716 states and 1063 transitions. [2022-07-21 08:03:29,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:29,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-21 08:03:29,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:29,050 INFO L225 Difference]: With dead ends: 716 [2022-07-21 08:03:29,050 INFO L226 Difference]: Without dead ends: 592 [2022-07-21 08:03:29,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:29,052 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 833 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:29,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 985 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:29,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-07-21 08:03:29,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 567. [2022-07-21 08:03:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 507 states have (on average 1.4792899408284024) internal successors, (750), 512 states have internal predecessors, (750), 42 states have call successors, (42), 15 states have call predecessors, (42), 16 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2022-07-21 08:03:29,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 844 transitions. [2022-07-21 08:03:29,074 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 844 transitions. Word has length 45 [2022-07-21 08:03:29,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:29,074 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 844 transitions. [2022-07-21 08:03:29,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:29,075 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 844 transitions. [2022-07-21 08:03:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 08:03:29,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:29,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:29,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:03:29,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash 54588021, now seen corresponding path program 1 times [2022-07-21 08:03:29,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:29,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792672041] [2022-07-21 08:03:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:29,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 08:03:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,123 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 08:03:29,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:29,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792672041] [2022-07-21 08:03:29,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792672041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:29,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:29,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:29,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152044522] [2022-07-21 08:03:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:29,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:29,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:29,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:29,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:29,130 INFO L87 Difference]: Start difference. First operand 567 states and 844 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:29,445 INFO L93 Difference]: Finished difference Result 1016 states and 1444 transitions. [2022-07-21 08:03:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:29,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-21 08:03:29,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:29,450 INFO L225 Difference]: With dead ends: 1016 [2022-07-21 08:03:29,450 INFO L226 Difference]: Without dead ends: 781 [2022-07-21 08:03:29,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:29,452 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 324 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:29,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1288 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:03:29,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-07-21 08:03:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 665. [2022-07-21 08:03:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 596 states have (on average 1.4563758389261745) internal successors, (868), 603 states have internal predecessors, (868), 46 states have call successors, (46), 20 states have call predecessors, (46), 21 states have return successors, (54), 42 states have call predecessors, (54), 44 states have call successors, (54) [2022-07-21 08:03:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 968 transitions. [2022-07-21 08:03:29,474 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 968 transitions. Word has length 45 [2022-07-21 08:03:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:29,474 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 968 transitions. [2022-07-21 08:03:29,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 08:03:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 968 transitions. [2022-07-21 08:03:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 08:03:29,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:29,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:29,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:03:29,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1156464466, now seen corresponding path program 1 times [2022-07-21 08:03:29,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:29,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22998729] [2022-07-21 08:03:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:03:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 08:03:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:03:29,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:29,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22998729] [2022-07-21 08:03:29,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22998729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:29,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:29,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:29,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671453933] [2022-07-21 08:03:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:29,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:29,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:29,556 INFO L87 Difference]: Start difference. First operand 665 states and 968 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 08:03:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:29,903 INFO L93 Difference]: Finished difference Result 1204 states and 1687 transitions. [2022-07-21 08:03:29,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-21 08:03:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:29,907 INFO L225 Difference]: With dead ends: 1204 [2022-07-21 08:03:29,907 INFO L226 Difference]: Without dead ends: 871 [2022-07-21 08:03:29,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:29,908 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 312 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:29,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1341 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:03:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-07-21 08:03:29,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 833. [2022-07-21 08:03:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 743 states have (on average 1.4064602960969044) internal successors, (1045), 752 states have internal predecessors, (1045), 58 states have call successors, (58), 27 states have call predecessors, (58), 30 states have return successors, (74), 54 states have call predecessors, (74), 56 states have call successors, (74) [2022-07-21 08:03:29,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1177 transitions. [2022-07-21 08:03:29,943 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1177 transitions. Word has length 62 [2022-07-21 08:03:29,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:29,943 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1177 transitions. [2022-07-21 08:03:29,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 08:03:29,944 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1177 transitions. [2022-07-21 08:03:29,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 08:03:29,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:29,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:29,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:03:29,947 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:29,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1541851731, now seen corresponding path program 1 times [2022-07-21 08:03:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:29,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400824909] [2022-07-21 08:03:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:29,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:03:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:03:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 08:03:30,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:30,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400824909] [2022-07-21 08:03:30,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400824909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:30,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:30,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:03:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208038752] [2022-07-21 08:03:30,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:30,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:30,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:30,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:30,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:03:30,028 INFO L87 Difference]: Start difference. First operand 833 states and 1177 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 08:03:30,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:30,148 INFO L93 Difference]: Finished difference Result 1462 states and 1999 transitions. [2022-07-21 08:03:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:03:30,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-21 08:03:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:30,152 INFO L225 Difference]: With dead ends: 1462 [2022-07-21 08:03:30,152 INFO L226 Difference]: Without dead ends: 1008 [2022-07-21 08:03:30,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:30,158 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 812 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:30,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 998 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-21 08:03:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 953. [2022-07-21 08:03:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 850 states have (on average 1.3776470588235294) internal successors, (1171), 861 states have internal predecessors, (1171), 64 states have call successors, (64), 32 states have call predecessors, (64), 37 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2022-07-21 08:03:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1319 transitions. [2022-07-21 08:03:30,216 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1319 transitions. Word has length 67 [2022-07-21 08:03:30,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:30,216 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1319 transitions. [2022-07-21 08:03:30,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 08:03:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1319 transitions. [2022-07-21 08:03:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:03:30,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:30,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:30,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:03:30,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash -14326018, now seen corresponding path program 1 times [2022-07-21 08:03:30,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:30,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962882629] [2022-07-21 08:03:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:30,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:03:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:03:30,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:30,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962882629] [2022-07-21 08:03:30,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962882629] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:30,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230915094] [2022-07-21 08:03:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:30,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:30,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:30,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:03:30,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:03:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 08:03:30,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:30,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:03:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:03:30,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230915094] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:30,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:03:30,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-21 08:03:30,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398189366] [2022-07-21 08:03:30,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:30,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:03:30,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:03:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:03:30,590 INFO L87 Difference]: Start difference. First operand 953 states and 1319 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 08:03:30,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:30,709 INFO L93 Difference]: Finished difference Result 1009 states and 1387 transitions. [2022-07-21 08:03:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:03:30,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-21 08:03:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:30,714 INFO L225 Difference]: With dead ends: 1009 [2022-07-21 08:03:30,714 INFO L226 Difference]: Without dead ends: 1006 [2022-07-21 08:03:30,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:03:30,716 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1096 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:30,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 700 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:03:30,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-07-21 08:03:30,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 952. [2022-07-21 08:03:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 850 states have (on average 1.3752941176470588) internal successors, (1169), 860 states have internal predecessors, (1169), 63 states have call successors, (63), 32 states have call predecessors, (63), 37 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2022-07-21 08:03:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1316 transitions. [2022-07-21 08:03:30,747 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1316 transitions. Word has length 68 [2022-07-21 08:03:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:30,748 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1316 transitions. [2022-07-21 08:03:30,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 08:03:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1316 transitions. [2022-07-21 08:03:30,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 08:03:30,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:30,749 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:30,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:30,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:30,957 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:30,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash -445352970, now seen corresponding path program 1 times [2022-07-21 08:03:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:30,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775445940] [2022-07-21 08:03:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:30,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:03:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:03:31,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:31,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775445940] [2022-07-21 08:03:31,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775445940] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:31,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738545860] [2022-07-21 08:03:31,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:31,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:31,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:31,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:03:31,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:03:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:03:31,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:31,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:03:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:03:31,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738545860] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:03:31,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:03:31,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-21 08:03:31,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058413964] [2022-07-21 08:03:31,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:03:31,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:03:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:31,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:03:31,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:31,418 INFO L87 Difference]: Start difference. First operand 952 states and 1316 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-21 08:03:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:32,874 INFO L93 Difference]: Finished difference Result 2652 states and 3536 transitions. [2022-07-21 08:03:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-21 08:03:32,875 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-21 08:03:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:32,882 INFO L225 Difference]: With dead ends: 2652 [2022-07-21 08:03:32,882 INFO L226 Difference]: Without dead ends: 2108 [2022-07-21 08:03:32,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-21 08:03:32,885 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 1620 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 3838 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:32,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 3838 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:03:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2022-07-21 08:03:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1341. [2022-07-21 08:03:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1200 states have (on average 1.3358333333333334) internal successors, (1603), 1218 states have internal predecessors, (1603), 83 states have call successors, (83), 46 states have call predecessors, (83), 56 states have return successors, (118), 77 states have call predecessors, (118), 82 states have call successors, (118) [2022-07-21 08:03:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1804 transitions. [2022-07-21 08:03:32,951 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1804 transitions. Word has length 69 [2022-07-21 08:03:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:32,951 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 1804 transitions. [2022-07-21 08:03:32,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-21 08:03:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1804 transitions. [2022-07-21 08:03:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 08:03:32,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:32,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:32,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:33,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 08:03:33,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:33,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2000679978, now seen corresponding path program 1 times [2022-07-21 08:03:33,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:33,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292225767] [2022-07-21 08:03:33,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:33,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 08:03:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 08:03:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 08:03:33,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:33,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292225767] [2022-07-21 08:03:33,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292225767] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:33,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249105246] [2022-07-21 08:03:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:33,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:33,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:33,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:03:33,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:03:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:03:33,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:03:33,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:03:33,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249105246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:33,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:03:33,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-21 08:03:33,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49804736] [2022-07-21 08:03:33,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:33,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:03:33,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:03:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:33,368 INFO L87 Difference]: Start difference. First operand 1341 states and 1804 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 08:03:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:33,412 INFO L93 Difference]: Finished difference Result 2064 states and 2742 transitions. [2022-07-21 08:03:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:03:33,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-21 08:03:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:33,426 INFO L225 Difference]: With dead ends: 2064 [2022-07-21 08:03:33,426 INFO L226 Difference]: Without dead ends: 1219 [2022-07-21 08:03:33,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:33,428 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 566 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:33,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 705 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:03:33,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2022-07-21 08:03:33,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1204. [2022-07-21 08:03:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1079 states have (on average 1.33920296570899) internal successors, (1445), 1096 states have internal predecessors, (1445), 75 states have call successors, (75), 40 states have call predecessors, (75), 48 states have return successors, (104), 68 states have call predecessors, (104), 74 states have call successors, (104) [2022-07-21 08:03:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1624 transitions. [2022-07-21 08:03:33,479 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1624 transitions. Word has length 88 [2022-07-21 08:03:33,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:33,479 INFO L495 AbstractCegarLoop]: Abstraction has 1204 states and 1624 transitions. [2022-07-21 08:03:33,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-21 08:03:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1624 transitions. [2022-07-21 08:03:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 08:03:33,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:33,482 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:33,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:33,696 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 148780141, now seen corresponding path program 1 times [2022-07-21 08:03:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454868391] [2022-07-21 08:03:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 08:03:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:03:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 08:03:33,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:33,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454868391] [2022-07-21 08:03:33,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454868391] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:33,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233340623] [2022-07-21 08:03:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:33,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:33,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:33,753 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:03:33,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:03:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:33,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:03:33,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:03:33,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:03:33,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233340623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:33,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:03:33,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-21 08:03:33,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581010153] [2022-07-21 08:03:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:33,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:03:33,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:03:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:33,875 INFO L87 Difference]: Start difference. First operand 1204 states and 1624 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-21 08:03:33,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:33,907 INFO L93 Difference]: Finished difference Result 1473 states and 1965 transitions. [2022-07-21 08:03:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:03:33,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-21 08:03:33,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:33,910 INFO L225 Difference]: With dead ends: 1473 [2022-07-21 08:03:33,910 INFO L226 Difference]: Without dead ends: 328 [2022-07-21 08:03:33,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:33,912 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 59 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:33,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1228 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:03:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-21 08:03:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-07-21 08:03:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 297 states have (on average 1.569023569023569) internal successors, (466), 298 states have internal predecessors, (466), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 08:03:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 514 transitions. [2022-07-21 08:03:33,938 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 514 transitions. Word has length 103 [2022-07-21 08:03:33,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:33,938 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 514 transitions. [2022-07-21 08:03:33,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-21 08:03:33,939 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 514 transitions. [2022-07-21 08:03:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:33,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:33,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:33,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:34,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:34,151 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash -918151462, now seen corresponding path program 1 times [2022-07-21 08:03:34,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:34,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354274713] [2022-07-21 08:03:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:34,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:34,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:34,262 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 08:03:34,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:34,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354274713] [2022-07-21 08:03:34,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354274713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:34,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:34,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:03:34,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906733396] [2022-07-21 08:03:34,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:34,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:03:34,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:34,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:03:34,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:34,265 INFO L87 Difference]: Start difference. First operand 328 states and 514 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 08:03:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:35,144 INFO L93 Difference]: Finished difference Result 768 states and 1224 transitions. [2022-07-21 08:03:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:03:35,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:35,147 INFO L225 Difference]: With dead ends: 768 [2022-07-21 08:03:35,147 INFO L226 Difference]: Without dead ends: 448 [2022-07-21 08:03:35,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:03:35,149 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 879 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:35,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 905 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:03:35,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-07-21 08:03:35,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 328. [2022-07-21 08:03:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 297 states have (on average 1.5656565656565657) internal successors, (465), 298 states have internal predecessors, (465), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 08:03:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 513 transitions. [2022-07-21 08:03:35,162 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 513 transitions. Word has length 156 [2022-07-21 08:03:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:35,162 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 513 transitions. [2022-07-21 08:03:35,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 08:03:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 513 transitions. [2022-07-21 08:03:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:35,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:35,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:35,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:03:35,164 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:35,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:35,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1445690200, now seen corresponding path program 1 times [2022-07-21 08:03:35,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:35,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625167128] [2022-07-21 08:03:35,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:35,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:35,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:35,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625167128] [2022-07-21 08:03:35,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625167128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:35,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:35,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:03:35,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536919878] [2022-07-21 08:03:35,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:35,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:03:35,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:35,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:03:35,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:35,245 INFO L87 Difference]: Start difference. First operand 328 states and 513 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 08:03:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:36,063 INFO L93 Difference]: Finished difference Result 760 states and 1207 transitions. [2022-07-21 08:03:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:03:36,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:36,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:36,066 INFO L225 Difference]: With dead ends: 760 [2022-07-21 08:03:36,066 INFO L226 Difference]: Without dead ends: 448 [2022-07-21 08:03:36,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:03:36,067 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 870 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:36,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 903 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:03:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-07-21 08:03:36,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 328. [2022-07-21 08:03:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 297 states have (on average 1.5622895622895623) internal successors, (464), 298 states have internal predecessors, (464), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 08:03:36,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 512 transitions. [2022-07-21 08:03:36,082 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 512 transitions. Word has length 156 [2022-07-21 08:03:36,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:36,083 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 512 transitions. [2022-07-21 08:03:36,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 08:03:36,083 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 512 transitions. [2022-07-21 08:03:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:36,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:36,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:36,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:03:36,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:36,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:36,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1061407274, now seen corresponding path program 1 times [2022-07-21 08:03:36,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:36,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264662558] [2022-07-21 08:03:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:36,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:36,191 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 08:03:36,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:36,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264662558] [2022-07-21 08:03:36,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264662558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:36,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:36,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:03:36,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067785154] [2022-07-21 08:03:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:36,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:03:36,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:36,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:03:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:03:36,193 INFO L87 Difference]: Start difference. First operand 328 states and 512 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 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 08:03:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:38,080 INFO L93 Difference]: Finished difference Result 1200 states and 1919 transitions. [2022-07-21 08:03:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:03:38,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:38,085 INFO L225 Difference]: With dead ends: 1200 [2022-07-21 08:03:38,085 INFO L226 Difference]: Without dead ends: 891 [2022-07-21 08:03:38,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:38,105 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 1325 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:38,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 1425 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:03:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-07-21 08:03:38,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 652. [2022-07-21 08:03:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 595 states have (on average 1.576470588235294) internal successors, (938), 597 states have internal predecessors, (938), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2022-07-21 08:03:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1027 transitions. [2022-07-21 08:03:38,142 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1027 transitions. Word has length 156 [2022-07-21 08:03:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:38,142 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 1027 transitions. [2022-07-21 08:03:38,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 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 08:03:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1027 transitions. [2022-07-21 08:03:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:38,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:38,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:38,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:03:38,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash 761193050, now seen corresponding path program 1 times [2022-07-21 08:03:38,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:38,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226944528] [2022-07-21 08:03:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:38,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:38,249 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 08:03:38,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:38,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226944528] [2022-07-21 08:03:38,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226944528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:38,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:38,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:38,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59124248] [2022-07-21 08:03:38,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:38,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:38,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:38,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:38,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:38,252 INFO L87 Difference]: Start difference. First operand 652 states and 1027 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:40,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:40,611 INFO L93 Difference]: Finished difference Result 1983 states and 3175 transitions. [2022-07-21 08:03:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:40,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:40,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:40,617 INFO L225 Difference]: With dead ends: 1983 [2022-07-21 08:03:40,617 INFO L226 Difference]: Without dead ends: 1350 [2022-07-21 08:03:40,619 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 08:03:40,620 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 1438 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:40,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1774 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:03:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2022-07-21 08:03:40,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 953. [2022-07-21 08:03:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 870 states have (on average 1.5701149425287357) internal successors, (1366), 873 states have internal predecessors, (1366), 62 states have call successors, (62), 18 states have call predecessors, (62), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2022-07-21 08:03:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1495 transitions. [2022-07-21 08:03:40,668 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1495 transitions. Word has length 156 [2022-07-21 08:03:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:40,668 INFO L495 AbstractCegarLoop]: Abstraction has 953 states and 1495 transitions. [2022-07-21 08:03:40,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1495 transitions. [2022-07-21 08:03:40,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:40,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:40,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:40,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:03:40,670 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash -856247400, now seen corresponding path program 1 times [2022-07-21 08:03:40,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:40,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890645664] [2022-07-21 08:03:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:40,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:40,785 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 08:03:40,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:40,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890645664] [2022-07-21 08:03:40,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890645664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:40,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:40,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120856249] [2022-07-21 08:03:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:40,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:40,788 INFO L87 Difference]: Start difference. First operand 953 states and 1495 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:43,142 INFO L93 Difference]: Finished difference Result 3136 states and 5011 transitions. [2022-07-21 08:03:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:43,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:43,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:43,149 INFO L225 Difference]: With dead ends: 3136 [2022-07-21 08:03:43,149 INFO L226 Difference]: Without dead ends: 2202 [2022-07-21 08:03:43,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:43,152 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1350 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:43,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 2466 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:03:43,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-07-21 08:03:43,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1559. [2022-07-21 08:03:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1424 states have (on average 1.565308988764045) internal successors, (2229), 1429 states have internal predecessors, (2229), 100 states have call successors, (100), 30 states have call predecessors, (100), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2022-07-21 08:03:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2442 transitions. [2022-07-21 08:03:43,247 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2442 transitions. Word has length 156 [2022-07-21 08:03:43,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:43,247 INFO L495 AbstractCegarLoop]: Abstraction has 1559 states and 2442 transitions. [2022-07-21 08:03:43,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:43,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2442 transitions. [2022-07-21 08:03:43,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:43,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:43,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:43,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:03:43,250 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:43,250 INFO L85 PathProgramCache]: Analyzing trace with hash -567428010, now seen corresponding path program 1 times [2022-07-21 08:03:43,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:43,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268661442] [2022-07-21 08:03:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:43,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:43,343 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 08:03:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:43,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268661442] [2022-07-21 08:03:43,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268661442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:43,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:43,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:43,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311278671] [2022-07-21 08:03:43,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:43,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:43,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:43,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:43,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:43,345 INFO L87 Difference]: Start difference. First operand 1559 states and 2442 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:45,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:45,752 INFO L93 Difference]: Finished difference Result 5360 states and 8530 transitions. [2022-07-21 08:03:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:45,753 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:45,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:45,767 INFO L225 Difference]: With dead ends: 5360 [2022-07-21 08:03:45,767 INFO L226 Difference]: Without dead ends: 3820 [2022-07-21 08:03:45,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:45,771 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1346 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:45,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 2461 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 08:03:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3820 states. [2022-07-21 08:03:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3820 to 2772. [2022-07-21 08:03:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2533 states have (on average 1.5613896565337544) internal successors, (3955), 2542 states have internal predecessors, (3955), 176 states have call successors, (176), 54 states have call predecessors, (176), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-07-21 08:03:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 4342 transitions. [2022-07-21 08:03:45,941 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 4342 transitions. Word has length 156 [2022-07-21 08:03:45,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:45,942 INFO L495 AbstractCegarLoop]: Abstraction has 2772 states and 4342 transitions. [2022-07-21 08:03:45,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:45,942 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 4342 transitions. [2022-07-21 08:03:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:45,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:45,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:45,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:03:45,945 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:45,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1112300584, now seen corresponding path program 1 times [2022-07-21 08:03:45,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:45,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316650626] [2022-07-21 08:03:45,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:45,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:45,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,066 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 08:03:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:46,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316650626] [2022-07-21 08:03:46,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316650626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:46,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:46,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910523540] [2022-07-21 08:03:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:46,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:46,068 INFO L87 Difference]: Start difference. First operand 2772 states and 4342 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:47,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:47,457 INFO L93 Difference]: Finished difference Result 6596 states and 10499 transitions. [2022-07-21 08:03:47,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:47,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:47,483 INFO L225 Difference]: With dead ends: 6596 [2022-07-21 08:03:47,483 INFO L226 Difference]: Without dead ends: 3843 [2022-07-21 08:03:47,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:47,490 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 958 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:47,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1344 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:03:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2022-07-21 08:03:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 2772. [2022-07-21 08:03:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2533 states have (on average 1.5578365574417687) internal successors, (3946), 2542 states have internal predecessors, (3946), 176 states have call successors, (176), 54 states have call predecessors, (176), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-07-21 08:03:47,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 4333 transitions. [2022-07-21 08:03:47,649 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 4333 transitions. Word has length 156 [2022-07-21 08:03:47,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:47,650 INFO L495 AbstractCegarLoop]: Abstraction has 2772 states and 4333 transitions. [2022-07-21 08:03:47,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 4333 transitions. [2022-07-21 08:03:47,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:47,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:47,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:47,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:03:47,652 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:47,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:47,652 INFO L85 PathProgramCache]: Analyzing trace with hash -437140458, now seen corresponding path program 1 times [2022-07-21 08:03:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:47,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512444833] [2022-07-21 08:03:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:47,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:47,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:47,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:47,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:47,759 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 08:03:47,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512444833] [2022-07-21 08:03:47,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512444833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:47,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:47,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:47,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953961842] [2022-07-21 08:03:47,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:47,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:47,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:47,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:47,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:47,761 INFO L87 Difference]: Start difference. First operand 2772 states and 4333 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:49,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:49,090 INFO L93 Difference]: Finished difference Result 6586 states and 10452 transitions. [2022-07-21 08:03:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:49,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:49,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:49,102 INFO L225 Difference]: With dead ends: 6586 [2022-07-21 08:03:49,102 INFO L226 Difference]: Without dead ends: 3833 [2022-07-21 08:03:49,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:49,109 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 956 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:49,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 1340 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:03:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3833 states. [2022-07-21 08:03:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3833 to 2772. [2022-07-21 08:03:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2533 states have (on average 1.5542834583497829) internal successors, (3937), 2542 states have internal predecessors, (3937), 176 states have call successors, (176), 54 states have call predecessors, (176), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-07-21 08:03:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 4324 transitions. [2022-07-21 08:03:49,321 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 4324 transitions. Word has length 156 [2022-07-21 08:03:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:49,321 INFO L495 AbstractCegarLoop]: Abstraction has 2772 states and 4324 transitions. [2022-07-21 08:03:49,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:49,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 4324 transitions. [2022-07-21 08:03:49,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:49,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:49,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:49,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:03:49,325 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:49,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:49,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1385192424, now seen corresponding path program 1 times [2022-07-21 08:03:49,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:49,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538432677] [2022-07-21 08:03:49,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:49,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:49,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:49,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:49,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:49,425 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 08:03:49,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:49,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538432677] [2022-07-21 08:03:49,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538432677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:49,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:49,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:49,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111922893] [2022-07-21 08:03:49,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:49,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:49,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:49,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:49,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:49,428 INFO L87 Difference]: Start difference. First operand 2772 states and 4324 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:50,801 INFO L93 Difference]: Finished difference Result 6576 states and 10405 transitions. [2022-07-21 08:03:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:50,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:50,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:50,821 INFO L225 Difference]: With dead ends: 6576 [2022-07-21 08:03:50,821 INFO L226 Difference]: Without dead ends: 3823 [2022-07-21 08:03:50,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:50,827 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 954 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:50,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1336 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:03:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2022-07-21 08:03:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 2772. [2022-07-21 08:03:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2533 states have (on average 1.550730359257797) internal successors, (3928), 2542 states have internal predecessors, (3928), 176 states have call successors, (176), 54 states have call predecessors, (176), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-07-21 08:03:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 4315 transitions. [2022-07-21 08:03:51,016 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 4315 transitions. Word has length 156 [2022-07-21 08:03:51,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:51,016 INFO L495 AbstractCegarLoop]: Abstraction has 2772 states and 4315 transitions. [2022-07-21 08:03:51,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 4315 transitions. [2022-07-21 08:03:51,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:51,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:51,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:51,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:03:51,019 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:51,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1969964074, now seen corresponding path program 1 times [2022-07-21 08:03:51,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:51,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677498767] [2022-07-21 08:03:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:51,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:51,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:51,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:51,147 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 08:03:51,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:51,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677498767] [2022-07-21 08:03:51,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677498767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:51,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:51,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:51,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520303410] [2022-07-21 08:03:51,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:51,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:51,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:51,151 INFO L87 Difference]: Start difference. First operand 2772 states and 4315 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:53,759 INFO L93 Difference]: Finished difference Result 9777 states and 15392 transitions. [2022-07-21 08:03:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:53,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:53,779 INFO L225 Difference]: With dead ends: 9777 [2022-07-21 08:03:53,779 INFO L226 Difference]: Without dead ends: 7024 [2022-07-21 08:03:53,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:53,785 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1324 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 2572 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:53,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1341 Valid, 2438 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2572 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:03:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2022-07-21 08:03:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 5232. [2022-07-21 08:03:54,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 4785 states have (on average 1.5456635318704284) internal successors, (7396), 4802 states have internal predecessors, (7396), 328 states have call successors, (328), 102 states have call predecessors, (328), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2022-07-21 08:03:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 8149 transitions. [2022-07-21 08:03:54,142 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 8149 transitions. Word has length 156 [2022-07-21 08:03:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:54,142 INFO L495 AbstractCegarLoop]: Abstraction has 5232 states and 8149 transitions. [2022-07-21 08:03:54,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:54,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 8149 transitions. [2022-07-21 08:03:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:54,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:54,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:54,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:03:54,146 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:54,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:54,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1890497624, now seen corresponding path program 1 times [2022-07-21 08:03:54,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:54,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978574990] [2022-07-21 08:03:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:54,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:54,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:54,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:54,241 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 08:03:54,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:54,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978574990] [2022-07-21 08:03:54,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978574990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:54,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:54,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:54,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122771176] [2022-07-21 08:03:54,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:54,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:54,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:54,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:54,243 INFO L87 Difference]: Start difference. First operand 5232 states and 8149 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:55,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:55,745 INFO L93 Difference]: Finished difference Result 12300 states and 19420 transitions. [2022-07-21 08:03:55,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:55,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:03:55,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:55,763 INFO L225 Difference]: With dead ends: 12300 [2022-07-21 08:03:55,763 INFO L226 Difference]: Without dead ends: 7087 [2022-07-21 08:03:55,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:55,776 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1149 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:55,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1133 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:03:55,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7087 states. [2022-07-21 08:03:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7087 to 5232. [2022-07-21 08:03:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 4785 states have (on average 1.542110762800418) internal successors, (7379), 4802 states have internal predecessors, (7379), 328 states have call successors, (328), 102 states have call predecessors, (328), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2022-07-21 08:03:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 8132 transitions. [2022-07-21 08:03:56,152 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 8132 transitions. Word has length 156 [2022-07-21 08:03:56,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:56,152 INFO L495 AbstractCegarLoop]: Abstraction has 5232 states and 8132 transitions. [2022-07-21 08:03:56,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:03:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 8132 transitions. [2022-07-21 08:03:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:03:56,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:56,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:56,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:03:56,156 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1460839318, now seen corresponding path program 1 times [2022-07-21 08:03:56,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:56,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179300400] [2022-07-21 08:03:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:56,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:03:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:03:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:03:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:56,246 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 08:03:56,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:56,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179300400] [2022-07-21 08:03:56,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179300400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:56,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:56,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:56,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762547047] [2022-07-21 08:03:56,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:56,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:56,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:56,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:56,248 INFO L87 Difference]: Start difference. First operand 5232 states and 8132 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:04:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:00,328 INFO L93 Difference]: Finished difference Result 21023 states and 32918 transitions. [2022-07-21 08:04:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:00,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:04:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:00,368 INFO L225 Difference]: With dead ends: 21023 [2022-07-21 08:04:00,369 INFO L226 Difference]: Without dead ends: 15810 [2022-07-21 08:04:00,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:04:00,382 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 1418 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:00,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 2579 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3011 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 08:04:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15810 states. [2022-07-21 08:04:01,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15810 to 10147. [2022-07-21 08:04:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10147 states, 9300 states have (on average 1.540752688172043) internal successors, (14329), 9333 states have internal predecessors, (14329), 616 states have call successors, (616), 198 states have call predecessors, (616), 230 states have return successors, (891), 647 states have call predecessors, (891), 616 states have call successors, (891) [2022-07-21 08:04:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10147 states to 10147 states and 15836 transitions. [2022-07-21 08:04:01,281 INFO L78 Accepts]: Start accepts. Automaton has 10147 states and 15836 transitions. Word has length 156 [2022-07-21 08:04:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:01,281 INFO L495 AbstractCegarLoop]: Abstraction has 10147 states and 15836 transitions. [2022-07-21 08:04:01,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:04:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10147 states and 15836 transitions. [2022-07-21 08:04:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:04:01,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:01,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:01,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:04:01,287 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:01,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:01,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1887090092, now seen corresponding path program 1 times [2022-07-21 08:04:01,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:01,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137306667] [2022-07-21 08:04:01,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:01,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:04:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:04:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:04:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:04:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:01,377 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 08:04:01,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:01,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137306667] [2022-07-21 08:04:01,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137306667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:01,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:01,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:01,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36149171] [2022-07-21 08:04:01,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:01,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:01,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:01,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:01,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:01,379 INFO L87 Difference]: Start difference. First operand 10147 states and 15836 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:04:07,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:07,296 INFO L93 Difference]: Finished difference Result 40672 states and 63920 transitions. [2022-07-21 08:04:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:07,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:04:07,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:07,368 INFO L225 Difference]: With dead ends: 40672 [2022-07-21 08:04:07,368 INFO L226 Difference]: Without dead ends: 30544 [2022-07-21 08:04:07,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:04:07,390 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1682 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 2516 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 2402 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:07,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 2402 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2516 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 08:04:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30544 states. [2022-07-21 08:04:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30544 to 19796. [2022-07-21 08:04:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19796 states, 18165 states have (on average 1.5402697495183044) internal successors, (27979), 18230 states have internal predecessors, (27979), 1176 states have call successors, (1176), 390 states have call predecessors, (1176), 454 states have return successors, (1969), 1239 states have call predecessors, (1969), 1176 states have call successors, (1969) [2022-07-21 08:04:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19796 states to 19796 states and 31124 transitions. [2022-07-21 08:04:09,069 INFO L78 Accepts]: Start accepts. Automaton has 19796 states and 31124 transitions. Word has length 156 [2022-07-21 08:04:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:09,069 INFO L495 AbstractCegarLoop]: Abstraction has 19796 states and 31124 transitions. [2022-07-21 08:04:09,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:04:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 19796 states and 31124 transitions. [2022-07-21 08:04:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:04:09,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:09,077 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:09,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:04:09,077 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:09,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:09,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1025256490, now seen corresponding path program 1 times [2022-07-21 08:04:09,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:09,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367200245] [2022-07-21 08:04:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:09,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:04:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:04:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:04:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:04:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:09,158 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 08:04:09,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:09,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367200245] [2022-07-21 08:04:09,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367200245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:09,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:09,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457331488] [2022-07-21 08:04:09,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:09,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:09,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:09,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:09,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:09,160 INFO L87 Difference]: Start difference. First operand 19796 states and 31124 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:04:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:18,761 INFO L93 Difference]: Finished difference Result 78895 states and 124822 transitions. [2022-07-21 08:04:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:18,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:04:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:18,946 INFO L225 Difference]: With dead ends: 78895 [2022-07-21 08:04:18,946 INFO L226 Difference]: Without dead ends: 59118 [2022-07-21 08:04:19,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:04:19,010 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 1643 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:19,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 2401 Invalid, 2603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2509 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 08:04:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59118 states. [2022-07-21 08:04:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59118 to 39221. [2022-07-21 08:04:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39221 states, 36054 states have (on average 1.5411604814999722) internal successors, (55565), 36183 states have internal predecessors, (55565), 2264 states have call successors, (2264), 774 states have call predecessors, (2264), 902 states have return successors, (4579), 2391 states have call predecessors, (4579), 2264 states have call successors, (4579) [2022-07-21 08:04:22,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39221 states to 39221 states and 62408 transitions. [2022-07-21 08:04:22,773 INFO L78 Accepts]: Start accepts. Automaton has 39221 states and 62408 transitions. Word has length 156 [2022-07-21 08:04:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:22,774 INFO L495 AbstractCegarLoop]: Abstraction has 39221 states and 62408 transitions. [2022-07-21 08:04:22,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:04:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 39221 states and 62408 transitions. [2022-07-21 08:04:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:04:22,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:22,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:04:22,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:04:22,789 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:22,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1219301908, now seen corresponding path program 1 times [2022-07-21 08:04:22,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:22,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989998151] [2022-07-21 08:04:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:22,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:04:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:04:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:22,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:04:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:04:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:22,899 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 08:04:22,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:22,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989998151] [2022-07-21 08:04:22,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989998151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:22,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:22,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116795425] [2022-07-21 08:04:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:22,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:22,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:22,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:22,902 INFO L87 Difference]: Start difference. First operand 39221 states and 62408 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:04:40,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:40,735 INFO L93 Difference]: Finished difference Result 154574 states and 247388 transitions. [2022-07-21 08:04:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:40,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:04:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:41,121 INFO L225 Difference]: With dead ends: 154574 [2022-07-21 08:04:41,121 INFO L226 Difference]: Without dead ends: 115372 [2022-07-21 08:04:41,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:04:41,224 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 1385 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 2890 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:41,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 2520 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2890 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 08:04:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115372 states. [2022-07-21 08:04:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115372 to 78006. [2022-07-21 08:04:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78006 states, 71831 states have (on average 1.5424955799028275) internal successors, (110799), 72088 states have internal predecessors, (110799), 4376 states have call successors, (4376), 1542 states have call predecessors, (4376), 1798 states have return successors, (11193), 4631 states have call predecessors, (11193), 4376 states have call successors, (11193) [2022-07-21 08:04:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78006 states to 78006 states and 126368 transitions. [2022-07-21 08:04:49,077 INFO L78 Accepts]: Start accepts. Automaton has 78006 states and 126368 transitions. Word has length 156 [2022-07-21 08:04:49,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:49,077 INFO L495 AbstractCegarLoop]: Abstraction has 78006 states and 126368 transitions. [2022-07-21 08:04:49,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:04:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 78006 states and 126368 transitions. [2022-07-21 08:04:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:04:49,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:49,108 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:49,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:04:49,108 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:49,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1707349014, now seen corresponding path program 1 times [2022-07-21 08:04:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:49,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602462558] [2022-07-21 08:04:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:49,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:49,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:04:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:04:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:49,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:04:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:49,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:04:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:49,199 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 08:04:49,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:49,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602462558] [2022-07-21 08:04:49,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602462558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:49,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:49,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:49,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261118727] [2022-07-21 08:04:49,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:49,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:49,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:49,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:49,202 INFO L87 Difference]: Start difference. First operand 78006 states and 126368 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:05:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:22,229 INFO L93 Difference]: Finished difference Result 303565 states and 494578 transitions. [2022-07-21 08:05:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:05:22,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-21 08:05:22,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:23,239 INFO L225 Difference]: With dead ends: 303565 [2022-07-21 08:05:23,239 INFO L226 Difference]: Without dead ends: 225578 [2022-07-21 08:05:23,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:05:23,659 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1563 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:23,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 2391 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 08:05:23,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225578 states. [2022-07-21 08:05:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225578 to 155447. [2022-07-21 08:05:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155447 states, 143384 states have (on average 1.544056519555878) internal successors, (221393), 143897 states have internal predecessors, (221393), 8472 states have call successors, (8472), 3078 states have call predecessors, (8472), 3590 states have return successors, (28667), 8983 states have call predecessors, (28667), 8472 states have call successors, (28667) [2022-07-21 08:05:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155447 states to 155447 states and 258532 transitions. [2022-07-21 08:05:39,542 INFO L78 Accepts]: Start accepts. Automaton has 155447 states and 258532 transitions. Word has length 156 [2022-07-21 08:05:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:39,542 INFO L495 AbstractCegarLoop]: Abstraction has 155447 states and 258532 transitions. [2022-07-21 08:05:39,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 08:05:39,543 INFO L276 IsEmpty]: Start isEmpty. Operand 155447 states and 258532 transitions. [2022-07-21 08:05:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 08:05:39,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:39,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:39,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:05:39,596 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:39,596 INFO L85 PathProgramCache]: Analyzing trace with hash 614713812, now seen corresponding path program 1 times [2022-07-21 08:05:39,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:39,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636347666] [2022-07-21 08:05:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:39,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:39,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 08:05:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:39,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:05:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:05:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:39,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:05:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:39,693 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 08:05:39,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:39,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636347666] [2022-07-21 08:05:39,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636347666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:39,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:39,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:39,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976662636] [2022-07-21 08:05:39,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:39,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:39,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:39,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:39,695 INFO L87 Difference]: Start difference. First operand 155447 states and 258532 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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)