./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:54:02,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:54:02,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:54:02,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:54:02,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:54:02,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:54:02,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:54:02,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:54:02,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:54:02,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:54:02,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:54:02,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:54:02,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:54:02,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:54:02,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:54:02,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:54:02,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:54:02,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:54:02,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:54:02,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:54:02,070 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:54:02,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:54:02,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:54:02,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:54:02,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:54:02,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:54:02,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:54:02,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:54:02,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:54:02,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:54:02,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:54:02,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:54:02,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:54:02,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:54:02,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:54:02,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:54:02,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:54:02,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:54:02,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:54:02,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:54:02,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:54:02,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:54:02,087 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:54:02,118 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:54:02,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:54:02,121 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:54:02,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:54:02,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:54:02,122 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:54:02,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:54:02,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:54:02,123 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:54:02,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:54:02,124 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:54:02,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:54:02,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:54:02,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:54:02,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:54:02,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:54:02,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:54:02,125 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:54:02,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:54:02,125 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:54:02,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:54:02,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:54:02,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:54:02,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:54:02,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:54:02,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:54:02,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:54:02,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:54:02,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:54:02,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:54:02,128 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:54:02,128 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:54:02,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:54:02,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 [2022-07-22 20:54:02,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:54:02,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:54:02,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:54:02,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:54:02,335 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:54:02,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2022-07-22 20:54:02,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9d5cc159/0a82f470067f4198a0cf13e5fb8ef32e/FLAGd64fb2633 [2022-07-22 20:54:02,824 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:54:02,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2022-07-22 20:54:02,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9d5cc159/0a82f470067f4198a0cf13e5fb8ef32e/FLAGd64fb2633 [2022-07-22 20:54:03,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9d5cc159/0a82f470067f4198a0cf13e5fb8ef32e [2022-07-22 20:54:03,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:54:03,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:54:03,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:54:03,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:54:03,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:54:03,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:03,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b379a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03, skipping insertion in model container [2022-07-22 20:54:03,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:03,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:54:03,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:54:03,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[911,924] [2022-07-22 20:54:03,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[8416,8429] [2022-07-22 20:54:03,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:54:03,811 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:54:03,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[911,924] [2022-07-22 20:54:03,833 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c[8416,8429] [2022-07-22 20:54:03,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:54:03,893 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:54:03,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03 WrapperNode [2022-07-22 20:54:03,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:54:03,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:54:03,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:54:03,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:54:03,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:03,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:03,973 INFO L137 Inliner]: procedures = 81, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1139 [2022-07-22 20:54:03,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:54:03,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:54:03,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:54:03,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:54:03,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:03,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:03,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:03,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:04,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:04,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:04,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:04,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:54:04,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:54:04,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:54:04,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:54:04,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (1/1) ... [2022-07-22 20:54:04,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:54:04,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:54:04,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:54:04,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:54:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:54:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:54:04,194 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:54:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:54:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:54:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:54:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:54:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:54:04,197 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:54:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:54:04,197 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:54:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:54:04,197 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:54:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:54:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:54:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:54:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:54:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:54:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:54:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:54:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:54:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:54:04,199 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:54:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:54:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:54:04,200 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:54:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:54:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:54:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:54:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:54:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:54:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:54:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-22 20:54:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-22 20:54:04,395 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:54:04,397 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:54:05,173 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-22 20:54:05,173 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-22 20:54:05,240 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:54:05,283 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:54:05,283 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-22 20:54:05,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:54:05 BoogieIcfgContainer [2022-07-22 20:54:05,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:54:05,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:54:05,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:54:05,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:54:05,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:54:03" (1/3) ... [2022-07-22 20:54:05,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7663d7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:54:05, skipping insertion in model container [2022-07-22 20:54:05,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:54:03" (2/3) ... [2022-07-22 20:54:05,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7663d7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:54:05, skipping insertion in model container [2022-07-22 20:54:05,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:54:05" (3/3) ... [2022-07-22 20:54:05,299 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.15.cil.c [2022-07-22 20:54:05,314 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:54:05,314 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:54:05,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:54:05,395 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@38fd1531, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c3e1c40 [2022-07-22 20:54:05,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:54:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 467 states have (on average 1.6445396145610278) internal successors, (768), 475 states have internal predecessors, (768), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-22 20:54:05,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:54:05,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:05,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:05,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash -103676450, now seen corresponding path program 1 times [2022-07-22 20:54:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:05,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891224827] [2022-07-22 20:54:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:05,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:54:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:54:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:54:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:05,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:05,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891224827] [2022-07-22 20:54:05,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891224827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:05,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:05,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:54:05,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245329310] [2022-07-22 20:54:05,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:05,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:54:05,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:05,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:54:05,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:54:05,868 INFO L87 Difference]: Start difference. First operand has 530 states, 467 states have (on average 1.6445396145610278) internal successors, (768), 475 states have internal predecessors, (768), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:07,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:07,187 INFO L93 Difference]: Finished difference Result 1181 states and 1901 transitions. [2022-07-22 20:54:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:07,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:54:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:07,205 INFO L225 Difference]: With dead ends: 1181 [2022-07-22 20:54:07,205 INFO L226 Difference]: Without dead ends: 670 [2022-07-22 20:54:07,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:54:07,214 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 1720 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:07,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 2345 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:54:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-07-22 20:54:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 631. [2022-07-22 20:54:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 549 states have (on average 1.53551912568306) internal successors, (843), 556 states have internal predecessors, (843), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2022-07-22 20:54:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 960 transitions. [2022-07-22 20:54:07,312 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 960 transitions. Word has length 65 [2022-07-22 20:54:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:07,313 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 960 transitions. [2022-07-22 20:54:07,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:07,316 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 960 transitions. [2022-07-22 20:54:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:54:07,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:07,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:07,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:54:07,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1575212190, now seen corresponding path program 1 times [2022-07-22 20:54:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:07,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554154693] [2022-07-22 20:54:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:07,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:54:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:54:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:54:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:07,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:07,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554154693] [2022-07-22 20:54:07,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554154693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:07,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:07,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:54:07,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151175533] [2022-07-22 20:54:07,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:07,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:54:07,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:07,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:54:07,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:54:07,497 INFO L87 Difference]: Start difference. First operand 631 states and 960 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) [2022-07-22 20:54:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:09,534 INFO L93 Difference]: Finished difference Result 1664 states and 2420 transitions. [2022-07-22 20:54:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:54:09,535 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 [2022-07-22 20:54:09,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:09,543 INFO L225 Difference]: With dead ends: 1664 [2022-07-22 20:54:09,544 INFO L226 Difference]: Without dead ends: 1443 [2022-07-22 20:54:09,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:54:09,547 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 4057 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 3427 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:09,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 3427 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 20:54:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2022-07-22 20:54:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1304. [2022-07-22 20:54:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1092 states have (on average 1.4487179487179487) internal successors, (1582), 1107 states have internal predecessors, (1582), 129 states have call successors, (129), 75 states have call predecessors, (129), 81 states have return successors, (139), 123 states have call predecessors, (139), 125 states have call successors, (139) [2022-07-22 20:54:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1850 transitions. [2022-07-22 20:54:09,622 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1850 transitions. Word has length 65 [2022-07-22 20:54:09,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:09,623 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1850 transitions. [2022-07-22 20:54:09,623 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) [2022-07-22 20:54:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1850 transitions. [2022-07-22 20:54:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:54:09,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:09,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:09,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:54:09,625 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:09,626 INFO L85 PathProgramCache]: Analyzing trace with hash -74351947, now seen corresponding path program 1 times [2022-07-22 20:54:09,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:09,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664596203] [2022-07-22 20:54:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:09,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:54:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:54:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:09,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:09,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664596203] [2022-07-22 20:54:09,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664596203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:09,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:09,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:54:09,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818365411] [2022-07-22 20:54:09,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:09,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:54:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:09,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:54:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:54:09,766 INFO L87 Difference]: Start difference. First operand 1304 states and 1850 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:54:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:11,000 INFO L93 Difference]: Finished difference Result 2330 states and 3244 transitions. [2022-07-22 20:54:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:54:11,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:54:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:11,027 INFO L225 Difference]: With dead ends: 2330 [2022-07-22 20:54:11,027 INFO L226 Difference]: Without dead ends: 1442 [2022-07-22 20:54:11,032 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 [2022-07-22 20:54:11,036 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 708 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:11,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 3515 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:54:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2022-07-22 20:54:11,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1334. [2022-07-22 20:54:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1116 states have (on average 1.4363799283154122) internal successors, (1603), 1131 states have internal predecessors, (1603), 129 states have call successors, (129), 75 states have call predecessors, (129), 87 states have return successors, (145), 129 states have call predecessors, (145), 125 states have call successors, (145) [2022-07-22 20:54:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1877 transitions. [2022-07-22 20:54:11,111 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1877 transitions. Word has length 66 [2022-07-22 20:54:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:11,112 INFO L495 AbstractCegarLoop]: Abstraction has 1334 states and 1877 transitions. [2022-07-22 20:54:11,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:54:11,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1877 transitions. [2022-07-22 20:54:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:54:11,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:11,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:11,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:54:11,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:11,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1103711245, now seen corresponding path program 1 times [2022-07-22 20:54:11,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:11,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620371638] [2022-07-22 20:54:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:11,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:11,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:54:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:11,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:54:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:11,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:11,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620371638] [2022-07-22 20:54:11,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620371638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:11,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:11,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:54:11,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389967326] [2022-07-22 20:54:11,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:11,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:54:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:54:11,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:54:11,225 INFO L87 Difference]: Start difference. First operand 1334 states and 1877 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:54:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:13,224 INFO L93 Difference]: Finished difference Result 3672 states and 5064 transitions. [2022-07-22 20:54:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:54:13,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-22 20:54:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:13,232 INFO L225 Difference]: With dead ends: 3672 [2022-07-22 20:54:13,232 INFO L226 Difference]: Without dead ends: 1577 [2022-07-22 20:54:13,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:54:13,237 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 4112 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4132 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:13,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4132 Valid, 3450 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 20:54:13,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2022-07-22 20:54:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1422. [2022-07-22 20:54:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1169 states have (on average 1.4029084687767321) internal successors, (1640), 1184 states have internal predecessors, (1640), 149 states have call successors, (149), 89 states have call predecessors, (149), 102 states have return successors, (166), 150 states have call predecessors, (166), 145 states have call successors, (166) [2022-07-22 20:54:13,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1955 transitions. [2022-07-22 20:54:13,292 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1955 transitions. Word has length 66 [2022-07-22 20:54:13,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:13,293 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 1955 transitions. [2022-07-22 20:54:13,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:54:13,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1955 transitions. [2022-07-22 20:54:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:54:13,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:13,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:13,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:54:13,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1875323271, now seen corresponding path program 1 times [2022-07-22 20:54:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:13,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391669667] [2022-07-22 20:54:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:13,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:13,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:13,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:13,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:13,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:13,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:54:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:54:13,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:13,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391669667] [2022-07-22 20:54:13,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391669667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:13,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:13,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:54:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367491713] [2022-07-22 20:54:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:13,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:54:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:54:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:54:13,402 INFO L87 Difference]: Start difference. First operand 1422 states and 1955 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:54:14,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:14,648 INFO L93 Difference]: Finished difference Result 2599 states and 3506 transitions. [2022-07-22 20:54:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:54:14,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-22 20:54:14,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:14,656 INFO L225 Difference]: With dead ends: 2599 [2022-07-22 20:54:14,657 INFO L226 Difference]: Without dead ends: 1593 [2022-07-22 20:54:14,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:54:14,662 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 700 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:14,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 3462 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:54:14,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-07-22 20:54:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1462. [2022-07-22 20:54:14,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1201 states have (on average 1.3896752706078268) internal successors, (1669), 1216 states have internal predecessors, (1669), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2022-07-22 20:54:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1992 transitions. [2022-07-22 20:54:14,756 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1992 transitions. Word has length 91 [2022-07-22 20:54:14,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:14,757 INFO L495 AbstractCegarLoop]: Abstraction has 1462 states and 1992 transitions. [2022-07-22 20:54:14,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:54:14,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1992 transitions. [2022-07-22 20:54:14,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:54:14,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:14,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:14,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:54:14,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:14,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:14,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1975743351, now seen corresponding path program 1 times [2022-07-22 20:54:14,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:14,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338195465] [2022-07-22 20:54:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:14,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:54:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:54:14,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:14,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338195465] [2022-07-22 20:54:14,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338195465] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:14,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:14,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:54:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160709954] [2022-07-22 20:54:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:14,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:54:14,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:54:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:54:14,863 INFO L87 Difference]: Start difference. First operand 1462 states and 1992 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:16,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:16,048 INFO L93 Difference]: Finished difference Result 3500 states and 4597 transitions. [2022-07-22 20:54:16,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:54:16,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:54:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:16,062 INFO L225 Difference]: With dead ends: 3500 [2022-07-22 20:54:16,063 INFO L226 Difference]: Without dead ends: 2455 [2022-07-22 20:54:16,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-22 20:54:16,071 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 1941 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:16,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 2389 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:54:16,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-07-22 20:54:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2139. [2022-07-22 20:54:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 1730 states have (on average 1.3485549132947976) internal successors, (2333), 1758 states have internal predecessors, (2333), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2022-07-22 20:54:16,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2845 transitions. [2022-07-22 20:54:16,161 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2845 transitions. Word has length 91 [2022-07-22 20:54:16,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:16,161 INFO L495 AbstractCegarLoop]: Abstraction has 2139 states and 2845 transitions. [2022-07-22 20:54:16,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2845 transitions. [2022-07-22 20:54:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:54:16,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:16,163 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:16,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:54:16,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:16,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:16,165 INFO L85 PathProgramCache]: Analyzing trace with hash -36581305, now seen corresponding path program 1 times [2022-07-22 20:54:16,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:16,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160676093] [2022-07-22 20:54:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:16,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:16,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:16,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:16,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:16,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:16,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:54:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:16,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:54:16,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:16,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160676093] [2022-07-22 20:54:16,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160676093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:16,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:16,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:16,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853451117] [2022-07-22 20:54:16,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:16,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:16,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:16,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:16,259 INFO L87 Difference]: Start difference. First operand 2139 states and 2845 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:54:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:16,815 INFO L93 Difference]: Finished difference Result 5798 states and 7627 transitions. [2022-07-22 20:54:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:54:16,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-22 20:54:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:16,835 INFO L225 Difference]: With dead ends: 5798 [2022-07-22 20:54:16,835 INFO L226 Difference]: Without dead ends: 4078 [2022-07-22 20:54:16,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:54:16,842 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1486 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:16,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2298 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:54:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2022-07-22 20:54:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3858. [2022-07-22 20:54:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3068 states have (on average 1.302477183833116) internal successors, (3996), 3132 states have internal predecessors, (3996), 418 states have call successors, (418), 276 states have call predecessors, (418), 370 states have return successors, (627), 454 states have call predecessors, (627), 414 states have call successors, (627) [2022-07-22 20:54:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5041 transitions. [2022-07-22 20:54:17,022 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5041 transitions. Word has length 91 [2022-07-22 20:54:17,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:17,022 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 5041 transitions. [2022-07-22 20:54:17,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:54:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5041 transitions. [2022-07-22 20:54:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:54:17,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:17,025 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:54:17,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1094419383, now seen corresponding path program 1 times [2022-07-22 20:54:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:17,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769441479] [2022-07-22 20:54:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:54:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:54:17,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:17,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769441479] [2022-07-22 20:54:17,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769441479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:17,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:17,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:54:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484803431] [2022-07-22 20:54:17,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:17,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:54:17,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:17,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:54:17,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:54:17,090 INFO L87 Difference]: Start difference. First operand 3858 states and 5041 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:17,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:17,723 INFO L93 Difference]: Finished difference Result 5696 states and 7344 transitions. [2022-07-22 20:54:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 20:54:17,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:54:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:17,735 INFO L225 Difference]: With dead ends: 5696 [2022-07-22 20:54:17,735 INFO L226 Difference]: Without dead ends: 2257 [2022-07-22 20:54:17,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:17,742 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 1160 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1807 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:54:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2022-07-22 20:54:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2139. [2022-07-22 20:54:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 1730 states have (on average 1.323699421965318) internal successors, (2290), 1758 states have internal predecessors, (2290), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2022-07-22 20:54:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2802 transitions. [2022-07-22 20:54:17,842 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2802 transitions. Word has length 91 [2022-07-22 20:54:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:17,843 INFO L495 AbstractCegarLoop]: Abstraction has 2139 states and 2802 transitions. [2022-07-22 20:54:17,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:17,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2802 transitions. [2022-07-22 20:54:17,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 20:54:17,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:17,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:17,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:54:17,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1268013203, now seen corresponding path program 1 times [2022-07-22 20:54:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:17,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144998601] [2022-07-22 20:54:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:54:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:54:17,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:17,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144998601] [2022-07-22 20:54:17,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144998601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:17,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:17,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:54:17,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861868222] [2022-07-22 20:54:17,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:17,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:54:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:17,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:54:17,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:54:17,935 INFO L87 Difference]: Start difference. First operand 2139 states and 2802 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:54:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:19,281 INFO L93 Difference]: Finished difference Result 4965 states and 6404 transitions. [2022-07-22 20:54:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 20:54:19,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-22 20:54:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:19,296 INFO L225 Difference]: With dead ends: 4965 [2022-07-22 20:54:19,296 INFO L226 Difference]: Without dead ends: 2938 [2022-07-22 20:54:19,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-22 20:54:19,303 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 2631 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2675 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:19,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2675 Valid, 2449 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:54:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-07-22 20:54:19,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2761. [2022-07-22 20:54:19,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2196 states have (on average 1.284608378870674) internal successors, (2821), 2232 states have internal predecessors, (2821), 303 states have call successors, (303), 190 states have call predecessors, (303), 260 states have return successors, (420), 341 states have call predecessors, (420), 299 states have call successors, (420) [2022-07-22 20:54:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 3544 transitions. [2022-07-22 20:54:19,452 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 3544 transitions. Word has length 92 [2022-07-22 20:54:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:19,453 INFO L495 AbstractCegarLoop]: Abstraction has 2761 states and 3544 transitions. [2022-07-22 20:54:19,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:54:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 3544 transitions. [2022-07-22 20:54:19,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 20:54:19,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:19,456 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:19,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:54:19,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:19,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:19,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1207382224, now seen corresponding path program 1 times [2022-07-22 20:54:19,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:19,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186149430] [2022-07-22 20:54:19,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:19,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:54:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:54:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:54:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:54:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:54:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 20:54:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:54:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:54:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 20:54:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 20:54:19,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:19,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186149430] [2022-07-22 20:54:19,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186149430] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:54:19,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621056660] [2022-07-22 20:54:19,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:19,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:54:19,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:54:19,579 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:54:19,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:54:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:19,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:54:19,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:54:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 20:54:19,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:54:19,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621056660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:19,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:54:19,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:54:19,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364859356] [2022-07-22 20:54:19,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:19,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:54:19,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:19,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:54:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:19,921 INFO L87 Difference]: Start difference. First operand 2761 states and 3544 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:54:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:20,121 INFO L93 Difference]: Finished difference Result 7086 states and 8859 transitions. [2022-07-22 20:54:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:54:20,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-22 20:54:20,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:20,139 INFO L225 Difference]: With dead ends: 7086 [2022-07-22 20:54:20,139 INFO L226 Difference]: Without dead ends: 4898 [2022-07-22 20:54:20,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:20,145 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 61 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:20,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1569 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:54:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2022-07-22 20:54:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4853. [2022-07-22 20:54:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4853 states, 3821 states have (on average 1.248102590944779) internal successors, (4769), 3886 states have internal predecessors, (4769), 537 states have call successors, (537), 372 states have call predecessors, (537), 493 states have return successors, (727), 597 states have call predecessors, (727), 533 states have call successors, (727) [2022-07-22 20:54:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4853 states to 4853 states and 6033 transitions. [2022-07-22 20:54:20,369 INFO L78 Accepts]: Start accepts. Automaton has 4853 states and 6033 transitions. Word has length 163 [2022-07-22 20:54:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:20,371 INFO L495 AbstractCegarLoop]: Abstraction has 4853 states and 6033 transitions. [2022-07-22 20:54:20,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:54:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4853 states and 6033 transitions. [2022-07-22 20:54:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-22 20:54:20,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:20,376 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:20,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 20:54:20,591 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,SelfDestructingSolverStorable9 [2022-07-22 20:54:20,592 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash -207723447, now seen corresponding path program 1 times [2022-07-22 20:54:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:20,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432691207] [2022-07-22 20:54:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:54:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:54:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:54:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:54:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:54:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 20:54:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 20:54:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:54:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 20:54:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 20:54:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-22 20:54:20,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:20,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432691207] [2022-07-22 20:54:20,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432691207] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:54:20,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541252105] [2022-07-22 20:54:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:20,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:54:20,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:54:20,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:54:20,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:54:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:54:20,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:54:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 20:54:21,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:54:21,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541252105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:21,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:54:21,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:54:21,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304618371] [2022-07-22 20:54:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:21,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:54:21,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:21,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:54:21,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:21,145 INFO L87 Difference]: Start difference. First operand 4853 states and 6033 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 20:54:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:21,461 INFO L93 Difference]: Finished difference Result 13721 states and 16771 transitions. [2022-07-22 20:54:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:54:21,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2022-07-22 20:54:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:21,503 INFO L225 Difference]: With dead ends: 13721 [2022-07-22 20:54:21,504 INFO L226 Difference]: Without dead ends: 9287 [2022-07-22 20:54:21,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:21,516 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 52 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:21,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1569 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:54:21,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9287 states. [2022-07-22 20:54:21,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9287 to 9277. [2022-07-22 20:54:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 7258 states have (on average 1.2241664370349958) internal successors, (8885), 7383 states have internal predecessors, (8885), 1037 states have call successors, (1037), 736 states have call predecessors, (1037), 980 states have return successors, (1420), 1160 states have call predecessors, (1420), 1033 states have call successors, (1420) [2022-07-22 20:54:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 11342 transitions. [2022-07-22 20:54:21,950 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 11342 transitions. Word has length 195 [2022-07-22 20:54:21,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:21,951 INFO L495 AbstractCegarLoop]: Abstraction has 9277 states and 11342 transitions. [2022-07-22 20:54:21,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 20:54:21,951 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 11342 transitions. [2022-07-22 20:54:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-22 20:54:21,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:21,958 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:21,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:54:22,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 20:54:22,171 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1105116725, now seen corresponding path program 1 times [2022-07-22 20:54:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:22,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435674016] [2022-07-22 20:54:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:54:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:54:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:54:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:54:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:54:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 20:54:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 20:54:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:54:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 20:54:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 20:54:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-22 20:54:22,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:22,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435674016] [2022-07-22 20:54:22,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435674016] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:54:22,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241442211] [2022-07-22 20:54:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:22,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:54:22,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:54:22,316 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:54:22,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 20:54:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:54:22,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:54:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-22 20:54:22,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:54:22,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241442211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:22,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:54:22,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:54:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962705513] [2022-07-22 20:54:22,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:22,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:54:22,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:54:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:22,773 INFO L87 Difference]: Start difference. First operand 9277 states and 11342 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 20:54:23,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:23,108 INFO L93 Difference]: Finished difference Result 15807 states and 19582 transitions. [2022-07-22 20:54:23,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:54:23,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 195 [2022-07-22 20:54:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:23,115 INFO L225 Difference]: With dead ends: 15807 [2022-07-22 20:54:23,115 INFO L226 Difference]: Without dead ends: 408 [2022-07-22 20:54:23,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:23,145 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 669 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:23,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 773 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:54:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-07-22 20:54:23,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2022-07-22 20:54:23,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5833333333333333) internal successors, (589), 374 states have internal predecessors, (589), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 20:54:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 645 transitions. [2022-07-22 20:54:23,161 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 645 transitions. Word has length 195 [2022-07-22 20:54:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:23,162 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 645 transitions. [2022-07-22 20:54:23,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 20:54:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 645 transitions. [2022-07-22 20:54:23,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:23,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:23,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:23,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 20:54:23,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:54:23,392 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:23,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:23,392 INFO L85 PathProgramCache]: Analyzing trace with hash -397337084, now seen corresponding path program 1 times [2022-07-22 20:54:23,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:23,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132236600] [2022-07-22 20:54:23,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:23,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:23,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132236600] [2022-07-22 20:54:23,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132236600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:23,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:23,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:54:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195824811] [2022-07-22 20:54:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:23,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:54:23,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:54:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:54:23,569 INFO L87 Difference]: Start difference. First operand 408 states and 645 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:24,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:24,949 INFO L93 Difference]: Finished difference Result 957 states and 1535 transitions. [2022-07-22 20:54:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:54:24,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:24,960 INFO L225 Difference]: With dead ends: 957 [2022-07-22 20:54:24,960 INFO L226 Difference]: Without dead ends: 561 [2022-07-22 20:54:24,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:54:24,962 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1110 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:24,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1139 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:54:24,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-22 20:54:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 408. [2022-07-22 20:54:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5806451612903225) internal successors, (588), 374 states have internal predecessors, (588), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 20:54:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 644 transitions. [2022-07-22 20:54:24,985 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 644 transitions. Word has length 190 [2022-07-22 20:54:24,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:24,985 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 644 transitions. [2022-07-22 20:54:24,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:24,986 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 644 transitions. [2022-07-22 20:54:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:24,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:24,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:24,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:54:24,988 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:24,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:24,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1996486142, now seen corresponding path program 1 times [2022-07-22 20:54:24,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:24,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742578873] [2022-07-22 20:54:24,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:24,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:25,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:25,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742578873] [2022-07-22 20:54:25,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742578873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:25,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:25,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:54:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105816260] [2022-07-22 20:54:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:54:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:25,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:54:25,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:54:25,138 INFO L87 Difference]: Start difference. First operand 408 states and 644 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:26,541 INFO L93 Difference]: Finished difference Result 949 states and 1518 transitions. [2022-07-22 20:54:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:54:26,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:26,545 INFO L225 Difference]: With dead ends: 949 [2022-07-22 20:54:26,545 INFO L226 Difference]: Without dead ends: 561 [2022-07-22 20:54:26,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:54:26,547 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1101 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:26,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1137 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:54:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-22 20:54:26,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 408. [2022-07-22 20:54:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5779569892473118) internal successors, (587), 374 states have internal predecessors, (587), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 20:54:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 643 transitions. [2022-07-22 20:54:26,580 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 643 transitions. Word has length 190 [2022-07-22 20:54:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:26,580 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 643 transitions. [2022-07-22 20:54:26,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 643 transitions. [2022-07-22 20:54:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:26,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:26,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:26,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:54:26,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:26,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:26,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2086546432, now seen corresponding path program 1 times [2022-07-22 20:54:26,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:26,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553209730] [2022-07-22 20:54:26,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:26,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:26,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:26,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553209730] [2022-07-22 20:54:26,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553209730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:26,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:26,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:54:26,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559400131] [2022-07-22 20:54:26,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:26,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:54:26,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:26,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:54:26,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:54:26,750 INFO L87 Difference]: Start difference. First operand 408 states and 643 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:29,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:29,763 INFO L93 Difference]: Finished difference Result 1506 states and 2426 transitions. [2022-07-22 20:54:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:54:29,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:29,771 INFO L225 Difference]: With dead ends: 1506 [2022-07-22 20:54:29,771 INFO L226 Difference]: Without dead ends: 1120 [2022-07-22 20:54:29,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:29,776 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 1682 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 2344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:29,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 1960 Invalid, 2344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 20:54:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2022-07-22 20:54:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 813. [2022-07-22 20:54:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 748 states have (on average 1.5909090909090908) internal successors, (1190), 751 states have internal predecessors, (1190), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-22 20:54:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1293 transitions. [2022-07-22 20:54:29,866 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1293 transitions. Word has length 190 [2022-07-22 20:54:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:29,867 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1293 transitions. [2022-07-22 20:54:29,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1293 transitions. [2022-07-22 20:54:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:29,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:29,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:29,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:54:29,870 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:29,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:29,870 INFO L85 PathProgramCache]: Analyzing trace with hash 361394428, now seen corresponding path program 1 times [2022-07-22 20:54:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:29,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957238064] [2022-07-22 20:54:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:29,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:29,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:30,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:30,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957238064] [2022-07-22 20:54:30,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957238064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:30,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:30,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:30,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981026177] [2022-07-22 20:54:30,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:30,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:30,051 INFO L87 Difference]: Start difference. First operand 813 states and 1293 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:33,409 INFO L93 Difference]: Finished difference Result 2490 states and 4021 transitions. [2022-07-22 20:54:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:33,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:33,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:33,417 INFO L225 Difference]: With dead ends: 2490 [2022-07-22 20:54:33,417 INFO L226 Difference]: Without dead ends: 1699 [2022-07-22 20:54:33,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:54:33,420 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 1826 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 3006 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:33,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 2231 Invalid, 3126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3006 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 20:54:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-07-22 20:54:33,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1189. [2022-07-22 20:54:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1095 states have (on average 1.5844748858447488) internal successors, (1735), 1099 states have internal predecessors, (1735), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-22 20:54:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1884 transitions. [2022-07-22 20:54:33,510 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1884 transitions. Word has length 190 [2022-07-22 20:54:33,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:33,511 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1884 transitions. [2022-07-22 20:54:33,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1884 transitions. [2022-07-22 20:54:33,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:33,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:33,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:33,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:54:33,513 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:33,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:33,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1561856002, now seen corresponding path program 1 times [2022-07-22 20:54:33,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:33,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940433433] [2022-07-22 20:54:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:33,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:33,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940433433] [2022-07-22 20:54:33,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940433433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:33,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:33,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911295928] [2022-07-22 20:54:33,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:33,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:33,649 INFO L87 Difference]: Start difference. First operand 1189 states and 1884 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:36,841 INFO L93 Difference]: Finished difference Result 3941 states and 6352 transitions. [2022-07-22 20:54:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:36,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:36,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:36,857 INFO L225 Difference]: With dead ends: 3941 [2022-07-22 20:54:36,857 INFO L226 Difference]: Without dead ends: 2774 [2022-07-22 20:54:36,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:54:36,864 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 1715 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3352 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:36,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 3135 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3352 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 20:54:36,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2022-07-22 20:54:37,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1942. [2022-07-22 20:54:37,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5787709497206703) internal successors, (2826), 1796 states have internal predecessors, (2826), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-22 20:54:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3071 transitions. [2022-07-22 20:54:37,018 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3071 transitions. Word has length 190 [2022-07-22 20:54:37,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:37,018 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 3071 transitions. [2022-07-22 20:54:37,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:37,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3071 transitions. [2022-07-22 20:54:37,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:37,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:37,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:37,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:54:37,021 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:37,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1008502972, now seen corresponding path program 1 times [2022-07-22 20:54:37,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:37,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681931625] [2022-07-22 20:54:37,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:37,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:37,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:37,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681931625] [2022-07-22 20:54:37,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681931625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:37,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:37,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:37,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746488927] [2022-07-22 20:54:37,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:37,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:37,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:37,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:37,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:37,211 INFO L87 Difference]: Start difference. First operand 1942 states and 3071 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:38,861 INFO L93 Difference]: Finished difference Result 4682 states and 7530 transitions. [2022-07-22 20:54:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:54:38,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:38,869 INFO L225 Difference]: With dead ends: 4682 [2022-07-22 20:54:38,869 INFO L226 Difference]: Without dead ends: 2762 [2022-07-22 20:54:38,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:38,874 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 1392 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:38,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1502 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:54:38,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2022-07-22 20:54:39,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1942. [2022-07-22 20:54:39,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5759776536312848) internal successors, (2821), 1796 states have internal predecessors, (2821), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-22 20:54:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3066 transitions. [2022-07-22 20:54:39,043 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3066 transitions. Word has length 190 [2022-07-22 20:54:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:39,043 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 3066 transitions. [2022-07-22 20:54:39,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3066 transitions. [2022-07-22 20:54:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:39,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:39,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:39,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:54:39,046 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1507059774, now seen corresponding path program 1 times [2022-07-22 20:54:39,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:39,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182865368] [2022-07-22 20:54:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:39,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:39,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:39,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:39,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182865368] [2022-07-22 20:54:39,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182865368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:39,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:39,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640409438] [2022-07-22 20:54:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:39,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:39,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:39,218 INFO L87 Difference]: Start difference. First operand 1942 states and 3066 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:40,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:40,787 INFO L93 Difference]: Finished difference Result 4676 states and 7504 transitions. [2022-07-22 20:54:40,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:54:40,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:40,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:40,797 INFO L225 Difference]: With dead ends: 4676 [2022-07-22 20:54:40,797 INFO L226 Difference]: Without dead ends: 2756 [2022-07-22 20:54:40,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:40,807 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 1393 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:40,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 1496 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1416 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:54:40,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2022-07-22 20:54:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1942. [2022-07-22 20:54:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5731843575418993) internal successors, (2816), 1796 states have internal predecessors, (2816), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-22 20:54:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3061 transitions. [2022-07-22 20:54:40,992 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3061 transitions. Word has length 190 [2022-07-22 20:54:40,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:40,992 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 3061 transitions. [2022-07-22 20:54:40,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:40,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3061 transitions. [2022-07-22 20:54:40,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:40,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:40,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:40,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:54:40,995 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:40,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:40,995 INFO L85 PathProgramCache]: Analyzing trace with hash 2077331580, now seen corresponding path program 1 times [2022-07-22 20:54:40,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:40,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190119029] [2022-07-22 20:54:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:40,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:41,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:41,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:41,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190119029] [2022-07-22 20:54:41,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190119029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:41,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:41,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107207858] [2022-07-22 20:54:41,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:41,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:41,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:41,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:41,152 INFO L87 Difference]: Start difference. First operand 1942 states and 3061 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:44,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:44,533 INFO L93 Difference]: Finished difference Result 6711 states and 10723 transitions. [2022-07-22 20:54:44,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:44,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:44,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:44,546 INFO L225 Difference]: With dead ends: 6711 [2022-07-22 20:54:44,547 INFO L226 Difference]: Without dead ends: 4791 [2022-07-22 20:54:44,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:54:44,552 INFO L413 NwaCegarLoop]: 1063 mSDtfsCounter, 1693 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:44,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 3111 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 20:54:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2022-07-22 20:54:44,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 3462. [2022-07-22 20:54:44,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3194 states have (on average 1.5685660613650594) internal successors, (5010), 3204 states have internal predecessors, (5010), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-22 20:54:44,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5453 transitions. [2022-07-22 20:54:44,959 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5453 transitions. Word has length 190 [2022-07-22 20:54:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:44,960 INFO L495 AbstractCegarLoop]: Abstraction has 3462 states and 5453 transitions. [2022-07-22 20:54:44,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5453 transitions. [2022-07-22 20:54:44,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:44,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:44,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:44,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:54:44,963 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:44,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1291333690, now seen corresponding path program 1 times [2022-07-22 20:54:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:44,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361796446] [2022-07-22 20:54:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:45,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:45,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:45,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361796446] [2022-07-22 20:54:45,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361796446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:45,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:45,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:45,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197460081] [2022-07-22 20:54:45,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:45,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:45,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:45,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:45,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:45,120 INFO L87 Difference]: Start difference. First operand 3462 states and 5453 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:49,124 INFO L93 Difference]: Finished difference Result 12289 states and 19601 transitions. [2022-07-22 20:54:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:49,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:49,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:49,154 INFO L225 Difference]: With dead ends: 12289 [2022-07-22 20:54:49,154 INFO L226 Difference]: Without dead ends: 8849 [2022-07-22 20:54:49,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:54:49,164 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 1692 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3293 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:49,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1712 Valid, 3106 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3293 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 20:54:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8849 states. [2022-07-22 20:54:49,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8849 to 6503. [2022-07-22 20:54:49,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 6003 states have (on average 1.565217391304348) internal successors, (9396), 6021 states have internal predecessors, (9396), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-22 20:54:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 10253 transitions. [2022-07-22 20:54:49,753 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 10253 transitions. Word has length 190 [2022-07-22 20:54:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:49,753 INFO L495 AbstractCegarLoop]: Abstraction has 6503 states and 10253 transitions. [2022-07-22 20:54:49,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 10253 transitions. [2022-07-22 20:54:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:49,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:49,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:49,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:54:49,759 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1958715580, now seen corresponding path program 1 times [2022-07-22 20:54:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:49,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363584622] [2022-07-22 20:54:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:49,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:49,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:49,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:49,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363584622] [2022-07-22 20:54:49,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363584622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:49,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:49,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084722413] [2022-07-22 20:54:49,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:49,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:49,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:49,905 INFO L87 Difference]: Start difference. First operand 6503 states and 10253 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:54,475 INFO L93 Difference]: Finished difference Result 23440 states and 37407 transitions. [2022-07-22 20:54:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:54,529 INFO L225 Difference]: With dead ends: 23440 [2022-07-22 20:54:54,529 INFO L226 Difference]: Without dead ends: 16959 [2022-07-22 20:54:54,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:54:54,547 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 1691 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3285 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 3379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:54,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 3101 Invalid, 3379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3285 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 20:54:54,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16959 states. [2022-07-22 20:54:55,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16959 to 12600. [2022-07-22 20:54:55,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 11636 states have (on average 1.5632519766242694) internal successors, (18190), 11670 states have internal predecessors, (18190), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-22 20:54:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 19929 transitions. [2022-07-22 20:54:55,712 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 19929 transitions. Word has length 190 [2022-07-22 20:54:55,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:55,712 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 19929 transitions. [2022-07-22 20:54:55,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 19929 transitions. [2022-07-22 20:54:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:54:55,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:55,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:55,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:54:55,720 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash -236513286, now seen corresponding path program 1 times [2022-07-22 20:54:55,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:55,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980688498] [2022-07-22 20:54:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:55,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:55,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:55,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:55,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:55,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:55,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980688498] [2022-07-22 20:54:55,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980688498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:55,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:55,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:55,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018110899] [2022-07-22 20:54:55,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:55,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:55,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:55,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:55,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:55,870 INFO L87 Difference]: Start difference. First operand 12600 states and 19929 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:58,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:58,891 INFO L93 Difference]: Finished difference Result 29786 states and 47788 transitions. [2022-07-22 20:54:58,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:54:58,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:54:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:58,948 INFO L225 Difference]: With dead ends: 29786 [2022-07-22 20:54:58,948 INFO L226 Difference]: Without dead ends: 17208 [2022-07-22 20:54:58,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:58,976 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 1466 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:58,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1443 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:54:58,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17208 states. [2022-07-22 20:55:00,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17208 to 12600. [2022-07-22 20:55:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 11636 states have (on average 1.5604159504984532) internal successors, (18157), 11670 states have internal predecessors, (18157), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-22 20:55:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 19896 transitions. [2022-07-22 20:55:00,182 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 19896 transitions. Word has length 190 [2022-07-22 20:55:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:55:00,182 INFO L495 AbstractCegarLoop]: Abstraction has 12600 states and 19896 transitions. [2022-07-22 20:55:00,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 19896 transitions. [2022-07-22 20:55:00,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:55:00,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:55:00,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:55:00,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:55:00,190 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:55:00,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:55:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash 108314876, now seen corresponding path program 1 times [2022-07-22 20:55:00,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:55:00,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622678293] [2022-07-22 20:55:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:55:00,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:55:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:55:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:00,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:55:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:55:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:55:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:00,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:55:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:55:00,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:55:00,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622678293] [2022-07-22 20:55:00,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622678293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:55:00,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:55:00,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:55:00,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141334668] [2022-07-22 20:55:00,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:55:00,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:55:00,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:55:00,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:55:00,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:55:00,341 INFO L87 Difference]: Start difference. First operand 12600 states and 19896 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:06,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:55:06,749 INFO L93 Difference]: Finished difference Result 45709 states and 72981 transitions. [2022-07-22 20:55:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:55:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:55:06,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:55:06,858 INFO L225 Difference]: With dead ends: 45709 [2022-07-22 20:55:06,858 INFO L226 Difference]: Without dead ends: 33131 [2022-07-22 20:55:06,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:55:06,901 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 1683 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3258 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 3090 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:55:06,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 3090 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3258 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 20:55:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33131 states. [2022-07-22 20:55:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33131 to 24858. [2022-07-22 20:55:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24858 states, 22966 states have (on average 1.5585212923452059) internal successors, (35793), 23032 states have internal predecessors, (35793), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-22 20:55:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24858 states to 24858 states and 39458 transitions. [2022-07-22 20:55:09,428 INFO L78 Accepts]: Start accepts. Automaton has 24858 states and 39458 transitions. Word has length 190 [2022-07-22 20:55:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:55:09,429 INFO L495 AbstractCegarLoop]: Abstraction has 24858 states and 39458 transitions. [2022-07-22 20:55:09,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 24858 states and 39458 transitions. [2022-07-22 20:55:09,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:55:09,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:55:09,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:55:09,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 20:55:09,441 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:55:09,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:55:09,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1089269690, now seen corresponding path program 1 times [2022-07-22 20:55:09,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:55:09,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25186095] [2022-07-22 20:55:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:55:09,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:55:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:09,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:55:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:55:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:55:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:55:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:55:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:55:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:55:09,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25186095] [2022-07-22 20:55:09,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25186095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:55:09,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:55:09,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:55:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043806897] [2022-07-22 20:55:09,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:55:09,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:55:09,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:55:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:55:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:55:09,588 INFO L87 Difference]: Start difference. First operand 24858 states and 39458 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:55:20,298 INFO L93 Difference]: Finished difference Result 90317 states and 145005 transitions. [2022-07-22 20:55:20,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:55:20,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:55:20,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:55:20,467 INFO L225 Difference]: With dead ends: 90317 [2022-07-22 20:55:20,467 INFO L226 Difference]: Without dead ends: 65481 [2022-07-22 20:55:20,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:55:20,522 INFO L413 NwaCegarLoop]: 1037 mSDtfsCounter, 1682 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3250 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:55:20,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 3085 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3250 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 20:55:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65481 states. [2022-07-22 20:55:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65481 to 49435. [2022-07-22 20:55:25,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49435 states, 45687 states have (on average 1.5574452251187427) internal successors, (71155), 45817 states have internal predecessors, (71155), 2845 states have call successors, (2845), 775 states have call predecessors, (2845), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-22 20:55:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49435 states to 49435 states and 79158 transitions. [2022-07-22 20:55:25,371 INFO L78 Accepts]: Start accepts. Automaton has 49435 states and 79158 transitions. Word has length 190 [2022-07-22 20:55:25,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:55:25,372 INFO L495 AbstractCegarLoop]: Abstraction has 49435 states and 79158 transitions. [2022-07-22 20:55:25,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 49435 states and 79158 transitions. [2022-07-22 20:55:25,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:55:25,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:55:25,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:55:25,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 20:55:25,391 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:55:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:55:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -680201924, now seen corresponding path program 1 times [2022-07-22 20:55:25,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:55:25,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538384521] [2022-07-22 20:55:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:55:25,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:55:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:55:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:55:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:25,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:55:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:25,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:55:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:25,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:55:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:55:25,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:55:25,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538384521] [2022-07-22 20:55:25,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538384521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:55:25,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:55:25,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:55:25,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330844247] [2022-07-22 20:55:25,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:55:25,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:55:25,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:55:25,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:55:25,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:55:25,529 INFO L87 Difference]: Start difference. First operand 49435 states and 79158 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:43,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:55:43,913 INFO L93 Difference]: Finished difference Result 179532 states and 290899 transitions. [2022-07-22 20:55:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:55:43,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-22 20:55:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:55:44,376 INFO L225 Difference]: With dead ends: 179532 [2022-07-22 20:55:44,376 INFO L226 Difference]: Without dead ends: 130119 [2022-07-22 20:55:44,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:55:44,514 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 1684 mSDsluCounter, 2048 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:55:44,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 3078 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 20:55:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130119 states. [2022-07-22 20:55:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130119 to 98716. [2022-07-22 20:55:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98716 states, 91256 states have (on average 1.5568181818181819) internal successors, (142069), 91514 states have internal predecessors, (142069), 5661 states have call successors, (5661), 1543 states have call predecessors, (5661), 1798 states have return successors, (12476), 5914 states have call predecessors, (12476), 5659 states have call successors, (12476) [2022-07-22 20:55:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98716 states to 98716 states and 160206 transitions. [2022-07-22 20:55:55,137 INFO L78 Accepts]: Start accepts. Automaton has 98716 states and 160206 transitions. Word has length 190 [2022-07-22 20:55:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:55:55,138 INFO L495 AbstractCegarLoop]: Abstraction has 98716 states and 160206 transitions. [2022-07-22 20:55:55,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 98716 states and 160206 transitions. [2022-07-22 20:55:55,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 20:55:55,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:55:55,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:55:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 20:55:55,179 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:55:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:55:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1291470982, now seen corresponding path program 1 times [2022-07-22 20:55:55,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:55:55,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662444958] [2022-07-22 20:55:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:55:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:55:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:55:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:55,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:55:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:55:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:55:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:55:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:55:55,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:55:55,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662444958] [2022-07-22 20:55:55,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662444958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:55:55,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:55:55,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:55:55,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636878505] [2022-07-22 20:55:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:55:55,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:55:55,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:55:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:55:55,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:55:55,327 INFO L87 Difference]: Start difference. First operand 98716 states and 160206 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)