./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 284334fdd31c4c26d16d0bf558a458f462d11a8d54419841fe6fc9cdbb9a1cfc --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:32:40,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:32:40,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:32:40,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:32:40,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:32:40,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:32:40,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:32:40,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:32:40,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:32:40,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:32:40,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:32:40,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:32:40,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:32:40,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:32:40,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:32:40,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:32:40,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:32:40,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:32:40,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:32:40,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:32:40,086 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:32:40,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:32:40,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:32:40,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:32:40,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:32:40,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:32:40,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:32:40,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:32:40,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:32:40,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:32:40,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:32:40,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:32:40,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:32:40,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:32:40,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:32:40,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:32:40,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:32:40,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:32:40,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:32:40,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:32:40,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:32:40,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:32:40,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:32:40,144 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:32:40,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:32:40,145 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:32:40,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:32:40,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:32:40,146 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:32:40,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:32:40,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:32:40,147 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:32:40,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:32:40,149 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:32:40,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:32:40,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:32:40,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:32:40,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:32:40,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:32:40,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:32:40,150 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:32:40,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:32:40,150 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:32:40,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:32:40,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:32:40,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:32:40,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:32:40,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:32:40,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:32:40,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:32:40,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:32:40,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:32:40,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:32:40,153 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:32:40,153 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:32:40,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:32:40,153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 284334fdd31c4c26d16d0bf558a458f462d11a8d54419841fe6fc9cdbb9a1cfc [2022-07-19 20:32:40,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:32:40,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:32:40,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:32:40,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:32:40,414 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:32:40,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-07-19 20:32:40,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2805bf645/66b511a05ea140fb8129adfbdc3ce9c9/FLAG67f89accb [2022-07-19 20:32:40,824 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:32:40,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-07-19 20:32:40,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2805bf645/66b511a05ea140fb8129adfbdc3ce9c9/FLAG67f89accb [2022-07-19 20:32:41,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2805bf645/66b511a05ea140fb8129adfbdc3ce9c9 [2022-07-19 20:32:41,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:32:41,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:32:41,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:32:41,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:32:41,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:32:41,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f08eb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41, skipping insertion in model container [2022-07-19 20:32:41,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:32:41,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:32:41,423 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2022-07-19 20:32:41,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2022-07-19 20:32:41,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:32:41,521 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:32:41,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[914,927] [2022-07-19 20:32:41,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.04.cil-1.c[7115,7128] [2022-07-19 20:32:41,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:32:41,594 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:32:41,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41 WrapperNode [2022-07-19 20:32:41,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:32:41,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:32:41,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:32:41,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:32:41,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,649 INFO L137 Inliner]: procedures = 61, calls = 69, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 576 [2022-07-19 20:32:41,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:32:41,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:32:41,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:32:41,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:32:41,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,666 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:32:41,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:32:41,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:32:41,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:32:41,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (1/1) ... [2022-07-19 20:32:41,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:32:41,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:41,734 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) [2022-07-19 20:32:41,735 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 [2022-07-19 20:32:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:32:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:32:41,763 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:32:41,763 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:32:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:32:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:32:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:32:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:32:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:32:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:32:41,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:32:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:32:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:32:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:32:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:32:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:32:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:32:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:32:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:32:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:32:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:32:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:32:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:32:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:32:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:32:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:32:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:32:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:32:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:32:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:32:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:32:41,768 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:32:41,840 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:32:41,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:32:42,383 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:32:42,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:32:42,396 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-19 20:32:42,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:32:42 BoogieIcfgContainer [2022-07-19 20:32:42,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:32:42,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:32:42,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:32:42,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:32:42,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:32:41" (1/3) ... [2022-07-19 20:32:42,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5912a1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:32:42, skipping insertion in model container [2022-07-19 20:32:42,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:41" (2/3) ... [2022-07-19 20:32:42,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5912a1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:32:42, skipping insertion in model container [2022-07-19 20:32:42,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:32:42" (3/3) ... [2022-07-19 20:32:42,408 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.04.cil-1.c [2022-07-19 20:32:42,420 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:32:42,420 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:32:42,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:32:42,472 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@1a8aeb1e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e9a99e5 [2022-07-19 20:32:42,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:32:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 240 states have internal predecessors, (371), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-19 20:32:42,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:42,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:42,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:42,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:42,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:42,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1541344950, now seen corresponding path program 1 times [2022-07-19 20:32:42,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:42,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514973402] [2022-07-19 20:32:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:42,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:42,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:42,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514973402] [2022-07-19 20:32:42,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514973402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:42,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:42,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:42,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269764739] [2022-07-19 20:32:42,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:42,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:42,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:42,943 INFO L87 Difference]: Start difference. First operand has 283 states, 234 states have (on average 1.5854700854700854) internal successors, (371), 240 states have internal predecessors, (371), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:43,966 INFO L93 Difference]: Finished difference Result 712 states and 1090 transitions. [2022-07-19 20:32:43,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:32:43,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:32:43,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:43,982 INFO L225 Difference]: With dead ends: 712 [2022-07-19 20:32:43,982 INFO L226 Difference]: Without dead ends: 439 [2022-07-19 20:32:43,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:32:43,990 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 863 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:43,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1678 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:32:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-07-19 20:32:44,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 373. [2022-07-19 20:32:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 305 states have (on average 1.4721311475409835) internal successors, (449), 312 states have internal predecessors, (449), 43 states have call successors, (43), 21 states have call predecessors, (43), 23 states have return successors, (52), 42 states have call predecessors, (52), 41 states have call successors, (52) [2022-07-19 20:32:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 544 transitions. [2022-07-19 20:32:44,068 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 544 transitions. Word has length 65 [2022-07-19 20:32:44,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:44,068 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 544 transitions. [2022-07-19 20:32:44,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:44,069 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 544 transitions. [2022-07-19 20:32:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:44,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:44,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:44,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:32:44,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:44,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:44,083 INFO L85 PathProgramCache]: Analyzing trace with hash -487241160, now seen corresponding path program 1 times [2022-07-19 20:32:44,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:44,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160822688] [2022-07-19 20:32:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:44,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:44,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:44,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160822688] [2022-07-19 20:32:44,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160822688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:44,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:44,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:32:44,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659948380] [2022-07-19 20:32:44,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:44,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:32:44,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:44,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:32:44,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:32:44,254 INFO L87 Difference]: Start difference. First operand 373 states and 544 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-19 20:32:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:45,936 INFO L93 Difference]: Finished difference Result 1320 states and 1873 transitions. [2022-07-19 20:32:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:32:45,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-19 20:32:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:45,948 INFO L225 Difference]: With dead ends: 1320 [2022-07-19 20:32:45,948 INFO L226 Difference]: Without dead ends: 1127 [2022-07-19 20:32:45,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:32:45,955 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 2184 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:45,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2198 Valid, 1922 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:32:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-07-19 20:32:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1027. [2022-07-19 20:32:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 821 states have (on average 1.405602923264312) internal successors, (1154), 841 states have internal predecessors, (1154), 110 states have call successors, (110), 81 states have call predecessors, (110), 94 states have return successors, (141), 107 states have call predecessors, (141), 108 states have call successors, (141) [2022-07-19 20:32:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1405 transitions. [2022-07-19 20:32:46,059 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1405 transitions. Word has length 65 [2022-07-19 20:32:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:46,059 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1405 transitions. [2022-07-19 20:32:46,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-19 20:32:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1405 transitions. [2022-07-19 20:32:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:46,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:46,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:46,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:32:46,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1762343849, now seen corresponding path program 1 times [2022-07-19 20:32:46,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:46,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708981287] [2022-07-19 20:32:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:46,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:46,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:46,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708981287] [2022-07-19 20:32:46,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708981287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:46,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:46,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:32:46,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472235134] [2022-07-19 20:32:46,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:32:46,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:46,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:32:46,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:32:46,211 INFO L87 Difference]: Start difference. First operand 1027 states and 1405 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:46,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:46,976 INFO L93 Difference]: Finished difference Result 1937 states and 2621 transitions. [2022-07-19 20:32:46,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:46,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 20:32:46,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:46,983 INFO L225 Difference]: With dead ends: 1937 [2022-07-19 20:32:46,983 INFO L226 Difference]: Without dead ends: 1097 [2022-07-19 20:32:46,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:32:46,986 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 487 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:46,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1559 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-07-19 20:32:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1047. [2022-07-19 20:32:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 837 states have (on average 1.3906810035842294) internal successors, (1164), 857 states have internal predecessors, (1164), 110 states have call successors, (110), 81 states have call predecessors, (110), 98 states have return successors, (145), 111 states have call predecessors, (145), 108 states have call successors, (145) [2022-07-19 20:32:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1419 transitions. [2022-07-19 20:32:47,039 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1419 transitions. Word has length 65 [2022-07-19 20:32:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:47,040 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1419 transitions. [2022-07-19 20:32:47,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1419 transitions. [2022-07-19 20:32:47,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:47,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:47,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:47,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:32:47,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:47,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1503264149, now seen corresponding path program 1 times [2022-07-19 20:32:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:47,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318880215] [2022-07-19 20:32:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:47,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:47,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:47,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:47,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:47,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:47,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318880215] [2022-07-19 20:32:47,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318880215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:47,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:47,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:32:47,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612130819] [2022-07-19 20:32:47,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:47,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:32:47,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:47,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:32:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:32:47,158 INFO L87 Difference]: Start difference. First operand 1047 states and 1419 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:47,966 INFO L93 Difference]: Finished difference Result 2015 states and 2701 transitions. [2022-07-19 20:32:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:32:47,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 20:32:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:47,973 INFO L225 Difference]: With dead ends: 2015 [2022-07-19 20:32:47,973 INFO L226 Difference]: Without dead ends: 1155 [2022-07-19 20:32:47,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:32:47,984 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 329 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:47,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1730 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:47,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-07-19 20:32:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1097. [2022-07-19 20:32:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 877 states have (on average 1.3728620296465222) internal successors, (1204), 897 states have internal predecessors, (1204), 110 states have call successors, (110), 81 states have call predecessors, (110), 108 states have return successors, (155), 121 states have call predecessors, (155), 108 states have call successors, (155) [2022-07-19 20:32:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1469 transitions. [2022-07-19 20:32:48,041 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1469 transitions. Word has length 65 [2022-07-19 20:32:48,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:48,042 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 1469 transitions. [2022-07-19 20:32:48,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:48,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1469 transitions. [2022-07-19 20:32:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:48,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:48,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:48,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:32:48,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:48,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:48,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1405499753, now seen corresponding path program 1 times [2022-07-19 20:32:48,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:48,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881288438] [2022-07-19 20:32:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:48,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:48,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881288438] [2022-07-19 20:32:48,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881288438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:48,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:48,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:48,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474471316] [2022-07-19 20:32:48,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:48,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:48,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:48,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:48,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:48,149 INFO L87 Difference]: Start difference. First operand 1097 states and 1469 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:48,825 INFO L93 Difference]: Finished difference Result 2234 states and 2952 transitions. [2022-07-19 20:32:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:32:48,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:32:48,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:48,833 INFO L225 Difference]: With dead ends: 2234 [2022-07-19 20:32:48,833 INFO L226 Difference]: Without dead ends: 1562 [2022-07-19 20:32:48,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-19 20:32:48,836 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 571 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:48,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1325 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:32:48,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-07-19 20:32:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1434. [2022-07-19 20:32:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1148 states have (on average 1.343205574912892) internal successors, (1542), 1171 states have internal predecessors, (1542), 142 states have call successors, (142), 111 states have call predecessors, (142), 142 states have return successors, (192), 154 states have call predecessors, (192), 140 states have call successors, (192) [2022-07-19 20:32:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1876 transitions. [2022-07-19 20:32:48,906 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1876 transitions. Word has length 65 [2022-07-19 20:32:48,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:48,907 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 1876 transitions. [2022-07-19 20:32:48,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:48,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1876 transitions. [2022-07-19 20:32:48,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:48,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:48,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:48,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:32:48,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1264951143, now seen corresponding path program 1 times [2022-07-19 20:32:48,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:48,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016379596] [2022-07-19 20:32:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:48,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:48,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:48,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016379596] [2022-07-19 20:32:48,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016379596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:48,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:48,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:48,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215397334] [2022-07-19 20:32:48,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:48,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:48,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:48,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:48,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:48,997 INFO L87 Difference]: Start difference. First operand 1434 states and 1876 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:49,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:49,734 INFO L93 Difference]: Finished difference Result 2510 states and 3239 transitions. [2022-07-19 20:32:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:32:49,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:32:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:49,741 INFO L225 Difference]: With dead ends: 2510 [2022-07-19 20:32:49,742 INFO L226 Difference]: Without dead ends: 1501 [2022-07-19 20:32:49,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:32:49,745 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 983 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:49,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 1172 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2022-07-19 20:32:49,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1341. [2022-07-19 20:32:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1078 states have (on average 1.342300556586271) internal successors, (1447), 1096 states have internal predecessors, (1447), 134 states have call successors, (134), 104 states have call predecessors, (134), 127 states have return successors, (170), 142 states have call predecessors, (170), 132 states have call successors, (170) [2022-07-19 20:32:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1751 transitions. [2022-07-19 20:32:49,807 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1751 transitions. Word has length 65 [2022-07-19 20:32:49,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:49,807 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 1751 transitions. [2022-07-19 20:32:49,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:49,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1751 transitions. [2022-07-19 20:32:49,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:49,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:49,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:49,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:32:49,809 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:49,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:49,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1398964649, now seen corresponding path program 1 times [2022-07-19 20:32:49,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:49,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637680157] [2022-07-19 20:32:49,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:49,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:49,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:49,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637680157] [2022-07-19 20:32:49,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637680157] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:49,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:49,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:49,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858163367] [2022-07-19 20:32:49,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:49,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:49,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:49,908 INFO L87 Difference]: Start difference. First operand 1341 states and 1751 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:50,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:50,374 INFO L93 Difference]: Finished difference Result 3720 states and 4793 transitions. [2022-07-19 20:32:50,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:32:50,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:32:50,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:50,387 INFO L225 Difference]: With dead ends: 3720 [2022-07-19 20:32:50,388 INFO L226 Difference]: Without dead ends: 2566 [2022-07-19 20:32:50,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:32:50,392 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 957 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:50,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 945 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:50,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-07-19 20:32:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2426. [2022-07-19 20:32:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1925 states have (on average 1.3012987012987014) internal successors, (2505), 1958 states have internal predecessors, (2505), 249 states have call successors, (249), 201 states have call predecessors, (249), 250 states have return successors, (356), 269 states have call predecessors, (356), 247 states have call successors, (356) [2022-07-19 20:32:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3110 transitions. [2022-07-19 20:32:50,506 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3110 transitions. Word has length 65 [2022-07-19 20:32:50,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:50,506 INFO L495 AbstractCegarLoop]: Abstraction has 2426 states and 3110 transitions. [2022-07-19 20:32:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:32:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3110 transitions. [2022-07-19 20:32:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:32:50,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:50,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:50,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:32:50,509 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:50,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:50,509 INFO L85 PathProgramCache]: Analyzing trace with hash 264887933, now seen corresponding path program 1 times [2022-07-19 20:32:50,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:50,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393374382] [2022-07-19 20:32:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:50,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:50,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:50,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393374382] [2022-07-19 20:32:50,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393374382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:50,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:50,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:50,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552177221] [2022-07-19 20:32:50,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:50,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:50,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:50,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:50,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:50,597 INFO L87 Difference]: Start difference. First operand 2426 states and 3110 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:51,120 INFO L93 Difference]: Finished difference Result 5570 states and 7140 transitions. [2022-07-19 20:32:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:32:51,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 20:32:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:51,138 INFO L225 Difference]: With dead ends: 5570 [2022-07-19 20:32:51,138 INFO L226 Difference]: Without dead ends: 3479 [2022-07-19 20:32:51,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:51,146 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 500 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:51,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1093 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:32:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2022-07-19 20:32:51,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3223. [2022-07-19 20:32:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2548 states have (on average 1.2880690737833596) internal successors, (3282), 2577 states have internal predecessors, (3282), 339 states have call successors, (339), 279 states have call predecessors, (339), 334 states have return successors, (473), 369 states have call predecessors, (473), 337 states have call successors, (473) [2022-07-19 20:32:51,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4094 transitions. [2022-07-19 20:32:51,316 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4094 transitions. Word has length 66 [2022-07-19 20:32:51,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:51,317 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 4094 transitions. [2022-07-19 20:32:51,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:51,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4094 transitions. [2022-07-19 20:32:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:32:51,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:51,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:51,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:32:51,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:51,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1723127592, now seen corresponding path program 1 times [2022-07-19 20:32:51,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:51,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632900057] [2022-07-19 20:32:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:51,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:51,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:51,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:51,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:51,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632900057] [2022-07-19 20:32:51,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632900057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:51,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:51,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:51,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699976474] [2022-07-19 20:32:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:51,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:51,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:51,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:51,390 INFO L87 Difference]: Start difference. First operand 3223 states and 4094 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:51,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:51,859 INFO L93 Difference]: Finished difference Result 7713 states and 9720 transitions. [2022-07-19 20:32:51,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:51,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 20:32:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:51,882 INFO L225 Difference]: With dead ends: 7713 [2022-07-19 20:32:51,882 INFO L226 Difference]: Without dead ends: 4680 [2022-07-19 20:32:51,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:32:51,894 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 953 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:51,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 781 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4680 states. [2022-07-19 20:32:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4680 to 4312. [2022-07-19 20:32:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4312 states, 3387 states have (on average 1.2669028638913493) internal successors, (4291), 3432 states have internal predecessors, (4291), 465 states have call successors, (465), 389 states have call predecessors, (465), 458 states have return successors, (642), 493 states have call predecessors, (642), 463 states have call successors, (642) [2022-07-19 20:32:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4312 states to 4312 states and 5398 transitions. [2022-07-19 20:32:52,127 INFO L78 Accepts]: Start accepts. Automaton has 4312 states and 5398 transitions. Word has length 66 [2022-07-19 20:32:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:52,128 INFO L495 AbstractCegarLoop]: Abstraction has 4312 states and 5398 transitions. [2022-07-19 20:32:52,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 4312 states and 5398 transitions. [2022-07-19 20:32:52,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 20:32:52,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:52,130 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:52,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:32:52,130 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:52,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:52,131 INFO L85 PathProgramCache]: Analyzing trace with hash -792696971, now seen corresponding path program 1 times [2022-07-19 20:32:52,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:52,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616279460] [2022-07-19 20:32:52,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:52,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:52,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:52,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616279460] [2022-07-19 20:32:52,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616279460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:52,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:52,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:52,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953982283] [2022-07-19 20:32:52,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:52,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:52,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:52,224 INFO L87 Difference]: Start difference. First operand 4312 states and 5398 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:32:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:52,796 INFO L93 Difference]: Finished difference Result 5057 states and 6301 transitions. [2022-07-19 20:32:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:52,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-19 20:32:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:52,820 INFO L225 Difference]: With dead ends: 5057 [2022-07-19 20:32:52,821 INFO L226 Difference]: Without dead ends: 5054 [2022-07-19 20:32:52,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:32:52,825 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1304 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:52,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 789 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:32:52,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5054 states. [2022-07-19 20:32:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5054 to 4437. [2022-07-19 20:32:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4437 states, 3497 states have (on average 1.2670860737775236) internal successors, (4431), 3543 states have internal predecessors, (4431), 472 states have call successors, (472), 397 states have call predecessors, (472), 466 states have return successors, (653), 499 states have call predecessors, (653), 471 states have call successors, (653) [2022-07-19 20:32:53,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4437 states to 4437 states and 5556 transitions. [2022-07-19 20:32:53,074 INFO L78 Accepts]: Start accepts. Automaton has 4437 states and 5556 transitions. Word has length 73 [2022-07-19 20:32:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:53,075 INFO L495 AbstractCegarLoop]: Abstraction has 4437 states and 5556 transitions. [2022-07-19 20:32:53,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:32:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4437 states and 5556 transitions. [2022-07-19 20:32:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 20:32:53,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:53,077 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:53,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:32:53,077 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:53,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:53,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1195350886, now seen corresponding path program 1 times [2022-07-19 20:32:53,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:53,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324438043] [2022-07-19 20:32:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:53,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:53,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324438043] [2022-07-19 20:32:53,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324438043] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:53,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992437380] [2022-07-19 20:32:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:53,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:53,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:53,190 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) [2022-07-19 20:32:53,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:32:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:53,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 20:32:53,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:53,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:53,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:32:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:53,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992437380] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:32:53,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:32:53,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-19 20:32:53,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483394519] [2022-07-19 20:32:53,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:32:53,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:32:53,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:32:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:32:53,847 INFO L87 Difference]: Start difference. First operand 4437 states and 5556 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 20:32:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:55,670 INFO L93 Difference]: Finished difference Result 9615 states and 11886 transitions. [2022-07-19 20:32:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 20:32:55,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-19 20:32:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:55,723 INFO L225 Difference]: With dead ends: 9615 [2022-07-19 20:32:55,723 INFO L226 Difference]: Without dead ends: 9612 [2022-07-19 20:32:55,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-19 20:32:55,730 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1141 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:55,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 2046 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:32:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9612 states. [2022-07-19 20:32:56,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9612 to 7843. [2022-07-19 20:32:56,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7843 states, 6163 states have (on average 1.2588025312347884) internal successors, (7758), 6244 states have internal predecessors, (7758), 834 states have call successors, (834), 711 states have call predecessors, (834), 844 states have return successors, (1164), 890 states have call predecessors, (1164), 833 states have call successors, (1164) [2022-07-19 20:32:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 9756 transitions. [2022-07-19 20:32:56,204 INFO L78 Accepts]: Start accepts. Automaton has 7843 states and 9756 transitions. Word has length 74 [2022-07-19 20:32:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:56,204 INFO L495 AbstractCegarLoop]: Abstraction has 7843 states and 9756 transitions. [2022-07-19 20:32:56,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-19 20:32:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7843 states and 9756 transitions. [2022-07-19 20:32:56,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 20:32:56,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:56,207 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:56,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:56,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 20:32:56,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash 85235253, now seen corresponding path program 2 times [2022-07-19 20:32:56,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:56,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542276904] [2022-07-19 20:32:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:56,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:56,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:56,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542276904] [2022-07-19 20:32:56,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542276904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:56,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:56,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:56,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739122945] [2022-07-19 20:32:56,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:56,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:56,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:56,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:56,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:56,493 INFO L87 Difference]: Start difference. First operand 7843 states and 9756 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:32:56,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:56,983 INFO L93 Difference]: Finished difference Result 9703 states and 12135 transitions. [2022-07-19 20:32:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:32:56,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-19 20:32:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:57,008 INFO L225 Difference]: With dead ends: 9703 [2022-07-19 20:32:57,009 INFO L226 Difference]: Without dead ends: 3955 [2022-07-19 20:32:57,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:32:57,024 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 665 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:57,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1066 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-07-19 20:32:57,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3485. [2022-07-19 20:32:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 2737 states have (on average 1.247716477895506) internal successors, (3415), 2771 states have internal predecessors, (3415), 376 states have call successors, (376), 313 states have call predecessors, (376), 370 states have return successors, (494), 403 states have call predecessors, (494), 375 states have call successors, (494) [2022-07-19 20:32:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 4285 transitions. [2022-07-19 20:32:57,265 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 4285 transitions. Word has length 77 [2022-07-19 20:32:57,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:57,266 INFO L495 AbstractCegarLoop]: Abstraction has 3485 states and 4285 transitions. [2022-07-19 20:32:57,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 20:32:57,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 4285 transitions. [2022-07-19 20:32:57,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 20:32:57,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:57,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:57,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:32:57,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:57,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:57,270 INFO L85 PathProgramCache]: Analyzing trace with hash -494782792, now seen corresponding path program 1 times [2022-07-19 20:32:57,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:57,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589659728] [2022-07-19 20:32:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:57,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:32:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:32:57,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:57,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589659728] [2022-07-19 20:32:57,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589659728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:57,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:57,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:57,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369272057] [2022-07-19 20:32:57,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:57,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:57,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:57,354 INFO L87 Difference]: Start difference. First operand 3485 states and 4285 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:32:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:58,412 INFO L93 Difference]: Finished difference Result 10171 states and 12399 transitions. [2022-07-19 20:32:58,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 20:32:58,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-19 20:32:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:58,435 INFO L225 Difference]: With dead ends: 10171 [2022-07-19 20:32:58,435 INFO L226 Difference]: Without dead ends: 6309 [2022-07-19 20:32:58,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-19 20:32:58,448 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1097 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:58,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1388 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:58,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6309 states. [2022-07-19 20:32:58,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6309 to 5980. [2022-07-19 20:32:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5980 states, 4628 states have (on average 1.2134831460674158) internal successors, (5616), 4710 states have internal predecessors, (5616), 656 states have call successors, (656), 553 states have call predecessors, (656), 694 states have return successors, (980), 719 states have call predecessors, (980), 655 states have call successors, (980) [2022-07-19 20:32:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5980 states to 5980 states and 7252 transitions. [2022-07-19 20:32:58,796 INFO L78 Accepts]: Start accepts. Automaton has 5980 states and 7252 transitions. Word has length 84 [2022-07-19 20:32:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:58,796 INFO L495 AbstractCegarLoop]: Abstraction has 5980 states and 7252 transitions. [2022-07-19 20:32:58,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:32:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5980 states and 7252 transitions. [2022-07-19 20:32:58,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 20:32:58,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:58,799 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:58,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:32:58,800 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:58,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash -98004109, now seen corresponding path program 1 times [2022-07-19 20:32:58,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:58,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708719372] [2022-07-19 20:32:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:58,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:58,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:58,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:58,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 20:32:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 20:32:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:58,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708719372] [2022-07-19 20:32:58,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708719372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:58,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:58,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:32:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85590324] [2022-07-19 20:32:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:58,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:32:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:32:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:32:58,888 INFO L87 Difference]: Start difference. First operand 5980 states and 7252 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:33:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:00,023 INFO L93 Difference]: Finished difference Result 10437 states and 12592 transitions. [2022-07-19 20:33:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 20:33:00,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-19 20:33:00,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:00,042 INFO L225 Difference]: With dead ends: 10437 [2022-07-19 20:33:00,042 INFO L226 Difference]: Without dead ends: 5574 [2022-07-19 20:33:00,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-19 20:33:00,056 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1350 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:00,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 1463 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:33:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2022-07-19 20:33:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5220. [2022-07-19 20:33:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5220 states, 4033 states have (on average 1.2005950905033473) internal successors, (4842), 4110 states have internal predecessors, (4842), 567 states have call successors, (567), 476 states have call predecessors, (567), 618 states have return successors, (799), 636 states have call predecessors, (799), 566 states have call successors, (799) [2022-07-19 20:33:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 6208 transitions. [2022-07-19 20:33:00,321 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 6208 transitions. Word has length 93 [2022-07-19 20:33:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:00,322 INFO L495 AbstractCegarLoop]: Abstraction has 5220 states and 6208 transitions. [2022-07-19 20:33:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:33:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 6208 transitions. [2022-07-19 20:33:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:00,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:00,324 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] [2022-07-19 20:33:00,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:33:00,325 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1764116269, now seen corresponding path program 1 times [2022-07-19 20:33:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:00,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233363355] [2022-07-19 20:33:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:00,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:00,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233363355] [2022-07-19 20:33:00,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233363355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:00,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:00,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:33:00,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723674088] [2022-07-19 20:33:00,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:00,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:33:00,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:33:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:33:00,427 INFO L87 Difference]: Start difference. First operand 5220 states and 6208 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:01,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:01,639 INFO L93 Difference]: Finished difference Result 5660 states and 6895 transitions. [2022-07-19 20:33:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:33:01,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:01,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:01,660 INFO L225 Difference]: With dead ends: 5660 [2022-07-19 20:33:01,660 INFO L226 Difference]: Without dead ends: 5495 [2022-07-19 20:33:01,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:33:01,667 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 850 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:01,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1027 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:33:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2022-07-19 20:33:01,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 5388. [2022-07-19 20:33:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 4181 states have (on average 1.2126285577613012) internal successors, (5070), 4259 states have internal predecessors, (5070), 580 states have call successors, (580), 482 states have call predecessors, (580), 625 states have return successors, (815), 649 states have call predecessors, (815), 579 states have call successors, (815) [2022-07-19 20:33:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 6465 transitions. [2022-07-19 20:33:01,995 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 6465 transitions. Word has length 90 [2022-07-19 20:33:01,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:01,996 INFO L495 AbstractCegarLoop]: Abstraction has 5388 states and 6465 transitions. [2022-07-19 20:33:01,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 6465 transitions. [2022-07-19 20:33:01,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:01,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:01,998 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] [2022-07-19 20:33:01,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:33:01,999 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:01,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:01,999 INFO L85 PathProgramCache]: Analyzing trace with hash 589456817, now seen corresponding path program 1 times [2022-07-19 20:33:01,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:02,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29084472] [2022-07-19 20:33:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:02,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:02,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:02,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:02,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29084472] [2022-07-19 20:33:02,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29084472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:02,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:02,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:02,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985702921] [2022-07-19 20:33:02,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:02,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:02,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:02,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:02,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:02,084 INFO L87 Difference]: Start difference. First operand 5388 states and 6465 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:03,578 INFO L93 Difference]: Finished difference Result 6053 states and 7497 transitions. [2022-07-19 20:33:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:33:03,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:03,594 INFO L225 Difference]: With dead ends: 6053 [2022-07-19 20:33:03,595 INFO L226 Difference]: Without dead ends: 5720 [2022-07-19 20:33:03,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:33:03,599 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 847 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:03,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 1614 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:33:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5720 states. [2022-07-19 20:33:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 5545. [2022-07-19 20:33:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5545 states, 4318 states have (on average 1.221861973135711) internal successors, (5276), 4397 states have internal predecessors, (5276), 593 states have call successors, (593), 488 states have call predecessors, (593), 632 states have return successors, (830), 663 states have call predecessors, (830), 592 states have call successors, (830) [2022-07-19 20:33:03,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 6699 transitions. [2022-07-19 20:33:03,940 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 6699 transitions. Word has length 90 [2022-07-19 20:33:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:03,940 INFO L495 AbstractCegarLoop]: Abstraction has 5545 states and 6699 transitions. [2022-07-19 20:33:03,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 6699 transitions. [2022-07-19 20:33:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:03,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:03,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:03,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:33:03,943 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:03,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1476679663, now seen corresponding path program 1 times [2022-07-19 20:33:03,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:03,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777408842] [2022-07-19 20:33:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:04,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:04,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:04,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777408842] [2022-07-19 20:33:04,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777408842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:04,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:04,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:04,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204158894] [2022-07-19 20:33:04,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:04,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:04,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:04,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:04,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:04,016 INFO L87 Difference]: Start difference. First operand 5545 states and 6699 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:05,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:05,597 INFO L93 Difference]: Finished difference Result 6631 states and 8379 transitions. [2022-07-19 20:33:05,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:33:05,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:05,616 INFO L225 Difference]: With dead ends: 6631 [2022-07-19 20:33:05,616 INFO L226 Difference]: Without dead ends: 6141 [2022-07-19 20:33:05,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:33:05,623 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 844 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:05,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1606 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:33:05,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2022-07-19 20:33:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 5860. [2022-07-19 20:33:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5860 states, 4593 states have (on average 1.2386239930328762) internal successors, (5689), 4674 states have internal predecessors, (5689), 619 states have call successors, (619), 500 states have call predecessors, (619), 646 states have return successors, (864), 691 states have call predecessors, (864), 618 states have call successors, (864) [2022-07-19 20:33:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5860 states to 5860 states and 7172 transitions. [2022-07-19 20:33:05,984 INFO L78 Accepts]: Start accepts. Automaton has 5860 states and 7172 transitions. Word has length 90 [2022-07-19 20:33:05,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:05,985 INFO L495 AbstractCegarLoop]: Abstraction has 5860 states and 7172 transitions. [2022-07-19 20:33:05,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:05,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5860 states and 7172 transitions. [2022-07-19 20:33:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:05,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:05,988 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] [2022-07-19 20:33:05,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:33:05,988 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:05,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash -434362895, now seen corresponding path program 1 times [2022-07-19 20:33:05,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:05,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160312923] [2022-07-19 20:33:05,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:05,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:06,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:06,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:06,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:06,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:06,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160312923] [2022-07-19 20:33:06,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160312923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:06,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:06,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:06,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365930530] [2022-07-19 20:33:06,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:06,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:06,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:06,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:06,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:06,081 INFO L87 Difference]: Start difference. First operand 5860 states and 7172 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:07,715 INFO L93 Difference]: Finished difference Result 7746 states and 10076 transitions. [2022-07-19 20:33:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:33:07,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:07,738 INFO L225 Difference]: With dead ends: 7746 [2022-07-19 20:33:07,738 INFO L226 Difference]: Without dead ends: 6941 [2022-07-19 20:33:07,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:33:07,746 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 840 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:07,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1602 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:33:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6941 states. [2022-07-19 20:33:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6941 to 6491. [2022-07-19 20:33:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6491 states, 5144 states have (on average 1.2665241057542769) internal successors, (6515), 5229 states have internal predecessors, (6515), 671 states have call successors, (671), 524 states have call predecessors, (671), 674 states have return successors, (938), 747 states have call predecessors, (938), 670 states have call successors, (938) [2022-07-19 20:33:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6491 states to 6491 states and 8124 transitions. [2022-07-19 20:33:08,229 INFO L78 Accepts]: Start accepts. Automaton has 6491 states and 8124 transitions. Word has length 90 [2022-07-19 20:33:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:08,230 INFO L495 AbstractCegarLoop]: Abstraction has 6491 states and 8124 transitions. [2022-07-19 20:33:08,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 6491 states and 8124 transitions. [2022-07-19 20:33:08,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:08,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:08,234 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] [2022-07-19 20:33:08,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:33:08,234 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:08,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:08,235 INFO L85 PathProgramCache]: Analyzing trace with hash -357462097, now seen corresponding path program 1 times [2022-07-19 20:33:08,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:08,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906867049] [2022-07-19 20:33:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:08,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:08,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:08,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:08,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:08,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906867049] [2022-07-19 20:33:08,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906867049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:08,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:08,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:08,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414168238] [2022-07-19 20:33:08,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:08,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:08,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:08,349 INFO L87 Difference]: Start difference. First operand 6491 states and 8124 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:09,771 INFO L93 Difference]: Finished difference Result 9975 states and 13486 transitions. [2022-07-19 20:33:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:33:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:09,801 INFO L225 Difference]: With dead ends: 9975 [2022-07-19 20:33:09,801 INFO L226 Difference]: Without dead ends: 8539 [2022-07-19 20:33:09,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:33:09,813 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 839 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:09,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1596 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:33:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2022-07-19 20:33:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 7758. [2022-07-19 20:33:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 6251 states have (on average 1.3074708046712527) internal successors, (8173), 6344 states have internal predecessors, (8173), 775 states have call successors, (775), 572 states have call predecessors, (775), 730 states have return successors, (1104), 859 states have call predecessors, (1104), 774 states have call successors, (1104) [2022-07-19 20:33:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 10052 transitions. [2022-07-19 20:33:10,331 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 10052 transitions. Word has length 90 [2022-07-19 20:33:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:10,331 INFO L495 AbstractCegarLoop]: Abstraction has 7758 states and 10052 transitions. [2022-07-19 20:33:10,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 10052 transitions. [2022-07-19 20:33:10,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:10,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:10,336 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] [2022-07-19 20:33:10,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:33:10,337 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:10,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1324812751, now seen corresponding path program 1 times [2022-07-19 20:33:10,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:10,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736504404] [2022-07-19 20:33:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:10,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:10,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:10,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736504404] [2022-07-19 20:33:10,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736504404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:10,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:10,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:10,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145058607] [2022-07-19 20:33:10,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:10,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:10,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:10,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:10,417 INFO L87 Difference]: Start difference. First operand 7758 states and 10052 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:12,141 INFO L93 Difference]: Finished difference Result 15265 states and 21602 transitions. [2022-07-19 20:33:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:33:12,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:12,191 INFO L225 Difference]: With dead ends: 15265 [2022-07-19 20:33:12,191 INFO L226 Difference]: Without dead ends: 12562 [2022-07-19 20:33:12,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:33:12,208 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1013 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:12,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1233 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:33:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2022-07-19 20:33:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 10194. [2022-07-19 20:33:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10194 states, 8383 states have (on average 1.3576285339377312) internal successors, (11381), 8492 states have internal predecessors, (11381), 967 states have call successors, (967), 668 states have call predecessors, (967), 842 states have return successors, (1474), 1067 states have call predecessors, (1474), 966 states have call successors, (1474) [2022-07-19 20:33:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10194 states to 10194 states and 13822 transitions. [2022-07-19 20:33:12,737 INFO L78 Accepts]: Start accepts. Automaton has 10194 states and 13822 transitions. Word has length 90 [2022-07-19 20:33:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:12,737 INFO L495 AbstractCegarLoop]: Abstraction has 10194 states and 13822 transitions. [2022-07-19 20:33:12,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 10194 states and 13822 transitions. [2022-07-19 20:33:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:12,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:12,743 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] [2022-07-19 20:33:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:33:12,743 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1817438925, now seen corresponding path program 1 times [2022-07-19 20:33:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:12,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214738857] [2022-07-19 20:33:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:12,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:12,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:12,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214738857] [2022-07-19 20:33:12,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214738857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:12,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:12,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792076433] [2022-07-19 20:33:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:12,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:12,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:12,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:12,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:12,851 INFO L87 Difference]: Start difference. First operand 10194 states and 13822 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:14,813 INFO L93 Difference]: Finished difference Result 24231 states and 35574 transitions. [2022-07-19 20:33:14,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:33:14,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:14,887 INFO L225 Difference]: With dead ends: 24231 [2022-07-19 20:33:14,888 INFO L226 Difference]: Without dead ends: 19092 [2022-07-19 20:33:14,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:33:14,912 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 856 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:14,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1617 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:33:14,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19092 states. [2022-07-19 20:33:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19092 to 15127. [2022-07-19 20:33:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15127 states, 12724 states have (on average 1.4095410248349576) internal successors, (17935), 12865 states have internal predecessors, (17935), 1335 states have call successors, (1335), 860 states have call predecessors, (1335), 1066 states have return successors, (2360), 1467 states have call predecessors, (2360), 1334 states have call successors, (2360) [2022-07-19 20:33:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15127 states to 15127 states and 21630 transitions. [2022-07-19 20:33:15,891 INFO L78 Accepts]: Start accepts. Automaton has 15127 states and 21630 transitions. Word has length 90 [2022-07-19 20:33:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:15,892 INFO L495 AbstractCegarLoop]: Abstraction has 15127 states and 21630 transitions. [2022-07-19 20:33:15,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 15127 states and 21630 transitions. [2022-07-19 20:33:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:15,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:15,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:15,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:33:15,904 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:15,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:15,905 INFO L85 PathProgramCache]: Analyzing trace with hash -863498767, now seen corresponding path program 1 times [2022-07-19 20:33:15,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:15,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508806229] [2022-07-19 20:33:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:15,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:15,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:15,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508806229] [2022-07-19 20:33:15,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508806229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:15,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:15,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:15,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019877978] [2022-07-19 20:33:15,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:15,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:15,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:15,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:15,994 INFO L87 Difference]: Start difference. First operand 15127 states and 21630 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:18,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:18,577 INFO L93 Difference]: Finished difference Result 41778 states and 63572 transitions. [2022-07-19 20:33:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:33:18,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:18,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:18,694 INFO L225 Difference]: With dead ends: 41778 [2022-07-19 20:33:18,694 INFO L226 Difference]: Without dead ends: 31706 [2022-07-19 20:33:18,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:33:18,733 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 889 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:18,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1568 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:33:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31706 states. [2022-07-19 20:33:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31706 to 24960. [2022-07-19 20:33:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24960 states, 21405 states have (on average 1.4516701705209063) internal successors, (31073), 21610 states have internal predecessors, (31073), 2039 states have call successors, (2039), 1244 states have call predecessors, (2039), 1514 states have return successors, (4586), 2235 states have call predecessors, (4586), 2038 states have call successors, (4586) [2022-07-19 20:33:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24960 states to 24960 states and 37698 transitions. [2022-07-19 20:33:20,329 INFO L78 Accepts]: Start accepts. Automaton has 24960 states and 37698 transitions. Word has length 90 [2022-07-19 20:33:20,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:20,329 INFO L495 AbstractCegarLoop]: Abstraction has 24960 states and 37698 transitions. [2022-07-19 20:33:20,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 24960 states and 37698 transitions. [2022-07-19 20:33:20,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:20,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:20,348 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] [2022-07-19 20:33:20,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:33:20,348 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2079652493, now seen corresponding path program 1 times [2022-07-19 20:33:20,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:20,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677375862] [2022-07-19 20:33:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:20,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:20,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:20,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677375862] [2022-07-19 20:33:20,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677375862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:20,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:20,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:20,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785417742] [2022-07-19 20:33:20,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:20,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:20,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:20,421 INFO L87 Difference]: Start difference. First operand 24960 states and 37698 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:24,376 INFO L93 Difference]: Finished difference Result 75689 states and 119626 transitions. [2022-07-19 20:33:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:33:24,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:24,589 INFO L225 Difference]: With dead ends: 75689 [2022-07-19 20:33:24,590 INFO L226 Difference]: Without dead ends: 55784 [2022-07-19 20:33:24,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:33:24,656 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 849 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:24,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1564 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:33:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55784 states. [2022-07-19 20:33:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55784 to 44561. [2022-07-19 20:33:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44561 states, 38766 states have (on average 1.4809626992725584) internal successors, (57411), 39099 states have internal predecessors, (57411), 3383 states have call successors, (3383), 2012 states have call predecessors, (3383), 2410 states have return successors, (10432), 3707 states have call predecessors, (10432), 3382 states have call successors, (10432) [2022-07-19 20:33:27,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44561 states to 44561 states and 71226 transitions. [2022-07-19 20:33:27,420 INFO L78 Accepts]: Start accepts. Automaton has 44561 states and 71226 transitions. Word has length 90 [2022-07-19 20:33:27,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:27,420 INFO L495 AbstractCegarLoop]: Abstraction has 44561 states and 71226 transitions. [2022-07-19 20:33:27,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:27,421 INFO L276 IsEmpty]: Start isEmpty. Operand 44561 states and 71226 transitions. [2022-07-19 20:33:27,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:27,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:27,454 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] [2022-07-19 20:33:27,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:33:27,454 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:27,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1483347377, now seen corresponding path program 1 times [2022-07-19 20:33:27,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:27,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461444973] [2022-07-19 20:33:27,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:27,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:27,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461444973] [2022-07-19 20:33:27,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461444973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:27,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:27,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573789057] [2022-07-19 20:33:27,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:27,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:27,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:27,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:27,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:27,544 INFO L87 Difference]: Start difference. First operand 44561 states and 71226 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:34,065 INFO L93 Difference]: Finished difference Result 113398 states and 180003 transitions. [2022-07-19 20:33:34,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:33:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:34,395 INFO L225 Difference]: With dead ends: 113398 [2022-07-19 20:33:34,395 INFO L226 Difference]: Without dead ends: 73893 [2022-07-19 20:33:34,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:33:34,527 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 556 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:34,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1291 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:33:34,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73893 states. [2022-07-19 20:33:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73893 to 45332. [2022-07-19 20:33:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45332 states, 39537 states have (on average 1.4715835799377799) internal successors, (58182), 39870 states have internal predecessors, (58182), 3383 states have call successors, (3383), 2012 states have call predecessors, (3383), 2410 states have return successors, (10432), 3707 states have call predecessors, (10432), 3382 states have call successors, (10432) [2022-07-19 20:33:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45332 states to 45332 states and 71997 transitions. [2022-07-19 20:33:37,676 INFO L78 Accepts]: Start accepts. Automaton has 45332 states and 71997 transitions. Word has length 90 [2022-07-19 20:33:37,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:37,676 INFO L495 AbstractCegarLoop]: Abstraction has 45332 states and 71997 transitions. [2022-07-19 20:33:37,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 45332 states and 71997 transitions. [2022-07-19 20:33:37,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:33:37,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:37,712 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] [2022-07-19 20:33:37,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 20:33:37,712 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:37,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1550702669, now seen corresponding path program 1 times [2022-07-19 20:33:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:37,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194483106] [2022-07-19 20:33:37,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:33:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:33:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:33:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:33:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:33:37,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:37,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194483106] [2022-07-19 20:33:37,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194483106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:37,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:33:37,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:33:37,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71264642] [2022-07-19 20:33:37,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:37,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:33:37,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:37,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:33:37,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:33:37,821 INFO L87 Difference]: Start difference. First operand 45332 states and 71997 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:48,850 INFO L93 Difference]: Finished difference Result 185375 states and 302831 transitions. [2022-07-19 20:33:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 20:33:48,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 90 [2022-07-19 20:33:48,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:49,436 INFO L225 Difference]: With dead ends: 185375 [2022-07-19 20:33:49,437 INFO L226 Difference]: Without dead ends: 145099 [2022-07-19 20:33:49,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-19 20:33:49,821 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 1838 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:49,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 1460 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 20:33:49,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145099 states. [2022-07-19 20:33:57,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145099 to 120930. [2022-07-19 20:33:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120930 states, 105925 states have (on average 1.483077649280151) internal successors, (157095), 107157 states have internal predecessors, (157095), 8991 states have call successors, (8991), 5102 states have call predecessors, (8991), 6012 states have return successors, (29049), 8928 states have call predecessors, (29049), 8990 states have call successors, (29049) [2022-07-19 20:33:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120930 states to 120930 states and 195135 transitions. [2022-07-19 20:33:58,164 INFO L78 Accepts]: Start accepts. Automaton has 120930 states and 195135 transitions. Word has length 90 [2022-07-19 20:33:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:58,164 INFO L495 AbstractCegarLoop]: Abstraction has 120930 states and 195135 transitions. [2022-07-19 20:33:58,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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) [2022-07-19 20:33:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 120930 states and 195135 transitions. [2022-07-19 20:33:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:33:58,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:58,334 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:58,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 20:33:58,334 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:58,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2136531188, now seen corresponding path program 1 times [2022-07-19 20:33:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:58,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440989094] [2022-07-19 20:33:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:58,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:33:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:33:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:33:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:33:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:33:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 20:33:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:33:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:33:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:33:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 20:33:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 20:33:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 20:33:58,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:58,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440989094] [2022-07-19 20:33:58,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440989094] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:58,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126712592] [2022-07-19 20:33:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:58,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:58,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:58,429 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) [2022-07-19 20:33:58,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 20:33:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:58,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 20:33:58,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 20:33:58,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:58,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126712592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:58,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:58,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-19 20:33:58,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410197439] [2022-07-19 20:33:58,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:58,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:33:58,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:33:58,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:33:58,602 INFO L87 Difference]: Start difference. First operand 120930 states and 195135 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16)