./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.06.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0a12aada2256a7483e8803a0f1fb8477c858b141679e1395c89cdfba20292c4b --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:33:57,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:33:57,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:33:57,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:33:57,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:33:57,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:33:57,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:33:57,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:33:57,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:33:57,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:33:57,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:33:57,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:33:57,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:33:57,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:33:57,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:33:57,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:33:57,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:33:57,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:33:57,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:33:57,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:33:57,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:33:57,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:33:57,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:33:57,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:33:57,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:33:57,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:33:57,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:33:57,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:33:57,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:33:57,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:33:57,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:33:57,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:33:57,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:33:57,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:33:57,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:33:57,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:33:57,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:33:57,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:33:57,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:33:57,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:33:57,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:33:57,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:33:57,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:33:57,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:33:57,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:33:57,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:33:57,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:33:57,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:33:57,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:33:57,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:33:57,563 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:33:57,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:33:57,564 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:33:57,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:33:57,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:33:57,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:33:57,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:33:57,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:33:57,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:33:57,566 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:33:57,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:33:57,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:33:57,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:33:57,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:33:57,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:33:57,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:33:57,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:33:57,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:33:57,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:33:57,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:33:57,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:33:57,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:33:57,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:33:57,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:33:57,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:33:57,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:33:57,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a12aada2256a7483e8803a0f1fb8477c858b141679e1395c89cdfba20292c4b [2021-12-16 02:33:57,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:33:57,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:33:57,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:33:57,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:33:57,823 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:33:57,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c [2021-12-16 02:33:57,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91961f03/2183f34d142d4085ad5e37d271ef9a0b/FLAG4bea6cd06 [2021-12-16 02:33:58,286 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:33:58,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c [2021-12-16 02:33:58,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91961f03/2183f34d142d4085ad5e37d271ef9a0b/FLAG4bea6cd06 [2021-12-16 02:33:58,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91961f03/2183f34d142d4085ad5e37d271ef9a0b [2021-12-16 02:33:58,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:33:58,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:33:58,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:33:58,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:33:58,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:33:58,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:33:58" (1/1) ... [2021-12-16 02:33:58,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532e354f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:58, skipping insertion in model container [2021-12-16 02:33:58,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:33:58" (1/1) ... [2021-12-16 02:33:58,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:33:58,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:33:58,918 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.06.cil-1.c[911,924] [2021-12-16 02:33:59,006 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.06.cil-1.c[8416,8429] [2021-12-16 02:33:59,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:33:59,088 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:33:59,098 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.06.cil-1.c[911,924] [2021-12-16 02:33:59,112 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.06.cil-1.c[8416,8429] [2021-12-16 02:33:59,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:33:59,174 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:33:59,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59 WrapperNode [2021-12-16 02:33:59,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:33:59,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:33:59,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:33:59,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:33:59,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,235 INFO L137 Inliner]: procedures = 67, calls = 80, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 735 [2021-12-16 02:33:59,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:33:59,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:33:59,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:33:59,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:33:59,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:33:59,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:33:59,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:33:59,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:33:59,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (1/1) ... [2021-12-16 02:33:59,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:33:59,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:33:59,325 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) [2021-12-16 02:33:59,347 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 [2021-12-16 02:33:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:33:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:33:59,361 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:33:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-16 02:33:59,361 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-16 02:33:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-16 02:33:59,361 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-16 02:33:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-16 02:33:59,362 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-16 02:33:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-16 02:33:59,362 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-16 02:33:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-16 02:33:59,363 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-16 02:33:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-16 02:33:59,363 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-16 02:33:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-16 02:33:59,363 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-16 02:33:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-16 02:33:59,364 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-16 02:33:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-16 02:33:59,364 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-16 02:33:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-16 02:33:59,364 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-16 02:33:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:33:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-16 02:33:59,365 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-16 02:33:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-16 02:33:59,365 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-16 02:33:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:33:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:33:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-16 02:33:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-16 02:33:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-16 02:33:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-16 02:33:59,455 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:33:59,456 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:34:00,017 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-16 02:34:00,018 INFO L768 $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; [2021-12-16 02:34:00,097 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:34:00,106 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:34:00,106 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-16 02:34:00,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:34:00 BoogieIcfgContainer [2021-12-16 02:34:00,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:34:00,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:34:00,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:34:00,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:34:00,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:33:58" (1/3) ... [2021-12-16 02:34:00,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15af5680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:34:00, skipping insertion in model container [2021-12-16 02:34:00,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:33:59" (2/3) ... [2021-12-16 02:34:00,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15af5680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:34:00, skipping insertion in model container [2021-12-16 02:34:00,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:34:00" (3/3) ... [2021-12-16 02:34:00,117 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.06.cil-1.c [2021-12-16 02:34:00,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:34:00,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:34:00,163 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:34:00,170 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:34:00,170 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:34:00,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 301 states have (on average 1.611295681063123) internal successors, (485), 309 states have internal predecessors, (485), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 02:34:00,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:34:00,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:00,218 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:00,219 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:00,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:00,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1638147849, now seen corresponding path program 1 times [2021-12-16 02:34:00,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:00,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003880108] [2021-12-16 02:34:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:00,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:34:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:34:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:00,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:00,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003880108] [2021-12-16 02:34:00,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003880108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:00,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:00,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:34:00,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296164153] [2021-12-16 02:34:00,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:00,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:34:00,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:00,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:34:00,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:00,700 INFO L87 Difference]: Start difference. First operand has 357 states, 301 states have (on average 1.611295681063123) internal successors, (485), 309 states have internal predecessors, (485), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) 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) [2021-12-16 02:34:01,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:01,800 INFO L93 Difference]: Finished difference Result 842 states and 1321 transitions. [2021-12-16 02:34:01,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:01,803 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 [2021-12-16 02:34:01,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:01,816 INFO L225 Difference]: With dead ends: 842 [2021-12-16 02:34:01,816 INFO L226 Difference]: Without dead ends: 497 [2021-12-16 02:34:01,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:34:01,824 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 665 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:01,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 2085 Invalid, 1060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 02:34:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-16 02:34:01,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 458. [2021-12-16 02:34:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 383 states have (on average 1.4986945169712793) internal successors, (574), 390 states have internal predecessors, (574), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-16 02:34:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 677 transitions. [2021-12-16 02:34:01,909 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 677 transitions. Word has length 65 [2021-12-16 02:34:01,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:01,909 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 677 transitions. [2021-12-16 02:34:01,910 INFO L471 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) [2021-12-16 02:34:01,910 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 677 transitions. [2021-12-16 02:34:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:34:01,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:01,921 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:01,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:34:01,922 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:01,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash -977930807, now seen corresponding path program 1 times [2021-12-16 02:34:01,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:01,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796020387] [2021-12-16 02:34:01,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:01,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:01,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:34:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:34:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:02,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:02,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796020387] [2021-12-16 02:34:02,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796020387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:02,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:02,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:34:02,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120225897] [2021-12-16 02:34:02,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:02,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:34:02,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:02,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:34:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:02,066 INFO L87 Difference]: Start difference. First operand 458 states and 677 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:34:03,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:03,079 INFO L93 Difference]: Finished difference Result 855 states and 1243 transitions. [2021-12-16 02:34:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 02:34:03,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-16 02:34:03,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:03,085 INFO L225 Difference]: With dead ends: 855 [2021-12-16 02:34:03,085 INFO L226 Difference]: Without dead ends: 646 [2021-12-16 02:34:03,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-16 02:34:03,088 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 1000 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:03,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 2206 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 02:34:03,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-12-16 02:34:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 570. [2021-12-16 02:34:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 473 states have (on average 1.4799154334038056) internal successors, (700), 482 states have internal predecessors, (700), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2021-12-16 02:34:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 837 transitions. [2021-12-16 02:34:03,134 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 837 transitions. Word has length 65 [2021-12-16 02:34:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:03,134 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 837 transitions. [2021-12-16 02:34:03,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 02:34:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 837 transitions. [2021-12-16 02:34:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:34:03,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:03,137 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:03,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:34:03,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:03,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1288450379, now seen corresponding path program 1 times [2021-12-16 02:34:03,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:03,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841192240] [2021-12-16 02:34:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:03,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:34:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:34:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:03,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:03,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841192240] [2021-12-16 02:34:03,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841192240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:03,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:03,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 02:34:03,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882899637] [2021-12-16 02:34:03,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:03,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 02:34:03,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:03,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 02:34:03,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:34:03,296 INFO L87 Difference]: Start difference. First operand 570 states and 837 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) [2021-12-16 02:34:05,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:05,093 INFO L93 Difference]: Finished difference Result 2116 states and 3035 transitions. [2021-12-16 02:34:05,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-16 02:34:05,094 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 [2021-12-16 02:34:05,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:05,107 INFO L225 Difference]: With dead ends: 2116 [2021-12-16 02:34:05,107 INFO L226 Difference]: Without dead ends: 1783 [2021-12-16 02:34:05,112 INFO L932 BasicCegarLoop]: 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 [2021-12-16 02:34:05,118 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 2810 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 2366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:05,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2828 Valid, 2536 Invalid, 2366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 02:34:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2021-12-16 02:34:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1623. [2021-12-16 02:34:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1321 states have (on average 1.3959121877365632) internal successors, (1844), 1345 states have internal predecessors, (1844), 174 states have call successors, (174), 112 states have call predecessors, (174), 126 states have return successors, (206), 168 states have call predecessors, (206), 170 states have call successors, (206) [2021-12-16 02:34:05,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2224 transitions. [2021-12-16 02:34:05,227 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2224 transitions. Word has length 65 [2021-12-16 02:34:05,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:05,228 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2224 transitions. [2021-12-16 02:34:05,228 INFO L471 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) [2021-12-16 02:34:05,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2224 transitions. [2021-12-16 02:34:05,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 02:34:05,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:05,230 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:05,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:34:05,230 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:05,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1688769959, now seen corresponding path program 1 times [2021-12-16 02:34:05,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:05,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465948561] [2021-12-16 02:34:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:05,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 02:34:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 02:34:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:05,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:05,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465948561] [2021-12-16 02:34:05,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465948561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:05,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:05,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 02:34:05,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403177406] [2021-12-16 02:34:05,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:05,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 02:34:05,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:05,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 02:34:05,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:34:05,340 INFO L87 Difference]: Start difference. First operand 1623 states and 2224 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) [2021-12-16 02:34:07,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:07,044 INFO L93 Difference]: Finished difference Result 5147 states and 7106 transitions. [2021-12-16 02:34:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-16 02:34:07,045 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 [2021-12-16 02:34:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:07,056 INFO L225 Difference]: With dead ends: 5147 [2021-12-16 02:34:07,057 INFO L226 Difference]: Without dead ends: 2028 [2021-12-16 02:34:07,065 INFO L932 BasicCegarLoop]: 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 [2021-12-16 02:34:07,066 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 3251 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:07,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3269 Valid, 2248 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:34:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2021-12-16 02:34:07,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1824. [2021-12-16 02:34:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1452 states have (on average 1.3526170798898072) internal successors, (1964), 1478 states have internal predecessors, (1964), 214 states have call successors, (214), 140 states have call predecessors, (214), 156 states have return successors, (250), 208 states have call predecessors, (250), 210 states have call successors, (250) [2021-12-16 02:34:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2428 transitions. [2021-12-16 02:34:07,172 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2428 transitions. Word has length 66 [2021-12-16 02:34:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:07,172 INFO L470 AbstractCegarLoop]: Abstraction has 1824 states and 2428 transitions. [2021-12-16 02:34:07,172 INFO L471 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) [2021-12-16 02:34:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2428 transitions. [2021-12-16 02:34:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:34:07,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:07,175 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:07,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:34:07,175 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:07,176 INFO L85 PathProgramCache]: Analyzing trace with hash -425793394, now seen corresponding path program 1 times [2021-12-16 02:34:07,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:07,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984678059] [2021-12-16 02:34:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:07,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:07,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:07,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:07,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 02:34:07,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:07,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984678059] [2021-12-16 02:34:07,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984678059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:07,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:07,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:34:07,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545597631] [2021-12-16 02:34:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:07,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:34:07,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:34:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:34:07,319 INFO L87 Difference]: Start difference. First operand 1824 states and 2428 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) [2021-12-16 02:34:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:08,116 INFO L93 Difference]: Finished difference Result 3647 states and 4869 transitions. [2021-12-16 02:34:08,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 02:34:08,116 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 [2021-12-16 02:34:08,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:08,126 INFO L225 Difference]: With dead ends: 3647 [2021-12-16 02:34:08,126 INFO L226 Difference]: Without dead ends: 2066 [2021-12-16 02:34:08,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:34:08,131 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 617 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:08,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2176 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:34:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2021-12-16 02:34:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1884. [2021-12-16 02:34:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1500 states have (on average 1.3373333333333333) internal successors, (2006), 1526 states have internal predecessors, (2006), 214 states have call successors, (214), 140 states have call predecessors, (214), 168 states have return successors, (262), 220 states have call predecessors, (262), 210 states have call successors, (262) [2021-12-16 02:34:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2482 transitions. [2021-12-16 02:34:08,210 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2482 transitions. Word has length 91 [2021-12-16 02:34:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:08,210 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 2482 transitions. [2021-12-16 02:34:08,211 INFO L471 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) [2021-12-16 02:34:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2482 transitions. [2021-12-16 02:34:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:34:08,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:08,213 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:08,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:34:08,213 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:08,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash 18107280, now seen corresponding path program 1 times [2021-12-16 02:34:08,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:08,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21037551] [2021-12-16 02:34:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:08,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 02:34:08,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:08,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21037551] [2021-12-16 02:34:08,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21037551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:08,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:08,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:34:08,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123635282] [2021-12-16 02:34:08,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:08,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:34:08,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:08,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:34:08,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:08,324 INFO L87 Difference]: Start difference. First operand 1884 states and 2482 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) [2021-12-16 02:34:09,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:09,220 INFO L93 Difference]: Finished difference Result 3444 states and 4533 transitions. [2021-12-16 02:34:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 02:34:09,220 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 [2021-12-16 02:34:09,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:09,231 INFO L225 Difference]: With dead ends: 3444 [2021-12-16 02:34:09,231 INFO L226 Difference]: Without dead ends: 2036 [2021-12-16 02:34:09,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-12-16 02:34:09,240 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 1234 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:09,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1260 Valid, 1626 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:34:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-12-16 02:34:09,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1668. [2021-12-16 02:34:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1336 states have (on average 1.341317365269461) internal successors, (1792), 1357 states have internal predecessors, (1792), 186 states have call successors, (186), 121 states have call predecessors, (186), 144 states have return successors, (223), 191 states have call predecessors, (223), 182 states have call successors, (223) [2021-12-16 02:34:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2201 transitions. [2021-12-16 02:34:09,336 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2201 transitions. Word has length 91 [2021-12-16 02:34:09,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:09,338 INFO L470 AbstractCegarLoop]: Abstraction has 1668 states and 2201 transitions. [2021-12-16 02:34:09,338 INFO L471 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) [2021-12-16 02:34:09,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2201 transitions. [2021-12-16 02:34:09,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:34:09,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:09,343 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:09,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:34:09,343 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1957269326, now seen corresponding path program 1 times [2021-12-16 02:34:09,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:09,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358447006] [2021-12-16 02:34:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:09,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 02:34:09,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:09,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358447006] [2021-12-16 02:34:09,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358447006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:09,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:09,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:09,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087682558] [2021-12-16 02:34:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:09,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:09,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:09,448 INFO L87 Difference]: Start difference. First operand 1668 states and 2201 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) [2021-12-16 02:34:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:09,931 INFO L93 Difference]: Finished difference Result 4810 states and 6369 transitions. [2021-12-16 02:34:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 02:34:09,931 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 [2021-12-16 02:34:09,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:09,950 INFO L225 Difference]: With dead ends: 4810 [2021-12-16 02:34:09,950 INFO L226 Difference]: Without dead ends: 3386 [2021-12-16 02:34:09,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:34:09,958 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 1396 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:09,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1424 Valid, 1091 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 02:34:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-12-16 02:34:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3092. [2021-12-16 02:34:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 2449 states have (on average 1.3033891384238465) internal successors, (3192), 2499 states have internal predecessors, (3192), 347 states have call successors, (347), 234 states have call predecessors, (347), 294 states have return successors, (497), 361 states have call predecessors, (497), 343 states have call successors, (497) [2021-12-16 02:34:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4036 transitions. [2021-12-16 02:34:10,129 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4036 transitions. Word has length 91 [2021-12-16 02:34:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:10,130 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 4036 transitions. [2021-12-16 02:34:10,130 INFO L471 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) [2021-12-16 02:34:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4036 transitions. [2021-12-16 02:34:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 02:34:10,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:10,132 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:10,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:34:10,132 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:10,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:10,133 INFO L85 PathProgramCache]: Analyzing trace with hash 899431248, now seen corresponding path program 1 times [2021-12-16 02:34:10,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:10,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626194490] [2021-12-16 02:34:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:10,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 02:34:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 02:34:10,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:10,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626194490] [2021-12-16 02:34:10,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626194490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:10,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:10,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:34:10,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796377674] [2021-12-16 02:34:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:10,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:34:10,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:10,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:34:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:34:10,211 INFO L87 Difference]: Start difference. First operand 3092 states and 4036 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) [2021-12-16 02:34:10,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:10,657 INFO L93 Difference]: Finished difference Result 4663 states and 6036 transitions. [2021-12-16 02:34:10,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 02:34:10,658 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 [2021-12-16 02:34:10,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:10,679 INFO L225 Difference]: With dead ends: 4663 [2021-12-16 02:34:10,680 INFO L226 Difference]: Without dead ends: 1815 [2021-12-16 02:34:10,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:10,687 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 534 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:10,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1382 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 02:34:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2021-12-16 02:34:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1668. [2021-12-16 02:34:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1336 states have (on average 1.313622754491018) internal successors, (1755), 1357 states have internal predecessors, (1755), 186 states have call successors, (186), 121 states have call predecessors, (186), 144 states have return successors, (223), 191 states have call predecessors, (223), 182 states have call successors, (223) [2021-12-16 02:34:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2164 transitions. [2021-12-16 02:34:10,780 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2164 transitions. Word has length 91 [2021-12-16 02:34:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:10,780 INFO L470 AbstractCegarLoop]: Abstraction has 1668 states and 2164 transitions. [2021-12-16 02:34:10,781 INFO L471 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) [2021-12-16 02:34:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2164 transitions. [2021-12-16 02:34:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-16 02:34:10,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:10,783 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:10,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:34:10,783 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1793087749, now seen corresponding path program 1 times [2021-12-16 02:34:10,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684506601] [2021-12-16 02:34:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:10,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 02:34:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 02:34:10,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:10,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684506601] [2021-12-16 02:34:10,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684506601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:10,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:10,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:34:10,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683470338] [2021-12-16 02:34:10,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:10,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:34:10,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:34:10,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:34:10,878 INFO L87 Difference]: Start difference. First operand 1668 states and 2164 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) [2021-12-16 02:34:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:12,151 INFO L93 Difference]: Finished difference Result 4604 states and 5968 transitions. [2021-12-16 02:34:12,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 02:34:12,152 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 [2021-12-16 02:34:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:12,169 INFO L225 Difference]: With dead ends: 4604 [2021-12-16 02:34:12,170 INFO L226 Difference]: Without dead ends: 3180 [2021-12-16 02:34:12,174 INFO L932 BasicCegarLoop]: 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 [2021-12-16 02:34:12,176 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 1607 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:12,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 1917 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:34:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2021-12-16 02:34:12,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3018. [2021-12-16 02:34:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 2364 states have (on average 1.259306260575296) internal successors, (2977), 2407 states have internal predecessors, (2977), 358 states have call successors, (358), 228 states have call predecessors, (358), 294 states have return successors, (500), 385 states have call predecessors, (500), 354 states have call successors, (500) [2021-12-16 02:34:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3835 transitions. [2021-12-16 02:34:12,349 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3835 transitions. Word has length 92 [2021-12-16 02:34:12,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:12,350 INFO L470 AbstractCegarLoop]: Abstraction has 3018 states and 3835 transitions. [2021-12-16 02:34:12,350 INFO L471 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) [2021-12-16 02:34:12,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3835 transitions. [2021-12-16 02:34:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:12,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:12,354 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:12,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:34:12,355 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:12,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1409205542, now seen corresponding path program 1 times [2021-12-16 02:34:12,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:12,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362163186] [2021-12-16 02:34:12,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:12,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:12,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:12,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362163186] [2021-12-16 02:34:12,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362163186] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:12,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:12,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:34:12,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878025709] [2021-12-16 02:34:12,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:12,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:34:12,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:12,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:34:12,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:34:12,452 INFO L87 Difference]: Start difference. First operand 3018 states and 3835 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-12-16 02:34:13,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:13,248 INFO L93 Difference]: Finished difference Result 3319 states and 4313 transitions. [2021-12-16 02:34:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:13,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:13,261 INFO L225 Difference]: With dead ends: 3319 [2021-12-16 02:34:13,261 INFO L226 Difference]: Without dead ends: 3094 [2021-12-16 02:34:13,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:34:13,264 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 703 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:13,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [721 Valid, 1010 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:34:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2021-12-16 02:34:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3018. [2021-12-16 02:34:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 2364 states have (on average 1.2588832487309645) internal successors, (2976), 2407 states have internal predecessors, (2976), 358 states have call successors, (358), 228 states have call predecessors, (358), 294 states have return successors, (500), 385 states have call predecessors, (500), 354 states have call successors, (500) [2021-12-16 02:34:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3834 transitions. [2021-12-16 02:34:13,434 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3834 transitions. Word has length 113 [2021-12-16 02:34:13,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:13,434 INFO L470 AbstractCegarLoop]: Abstraction has 3018 states and 3834 transitions. [2021-12-16 02:34:13,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-12-16 02:34:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3834 transitions. [2021-12-16 02:34:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:13,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:13,437 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:13,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:34:13,437 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:13,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash 457503132, now seen corresponding path program 1 times [2021-12-16 02:34:13,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:13,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910872283] [2021-12-16 02:34:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:13,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:13,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:13,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910872283] [2021-12-16 02:34:13,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910872283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:13,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:13,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:13,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936381548] [2021-12-16 02:34:13,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:13,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:13,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:13,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:13,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:13,547 INFO L87 Difference]: Start difference. First operand 3018 states and 3834 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:15,453 INFO L93 Difference]: Finished difference Result 3629 states and 4814 transitions. [2021-12-16 02:34:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:15,466 INFO L225 Difference]: With dead ends: 3629 [2021-12-16 02:34:15,467 INFO L226 Difference]: Without dead ends: 3409 [2021-12-16 02:34:15,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:34:15,469 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1096 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:15,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 2192 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:34:15,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2021-12-16 02:34:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3246. [2021-12-16 02:34:15,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 2567 states have (on average 1.2843786521231009) internal successors, (3297), 2612 states have internal predecessors, (3297), 375 states have call successors, (375), 234 states have call predecessors, (375), 302 states have return successors, (524), 403 states have call predecessors, (524), 371 states have call successors, (524) [2021-12-16 02:34:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 4196 transitions. [2021-12-16 02:34:15,681 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 4196 transitions. Word has length 113 [2021-12-16 02:34:15,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:15,682 INFO L470 AbstractCegarLoop]: Abstraction has 3246 states and 4196 transitions. [2021-12-16 02:34:15,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 4196 transitions. [2021-12-16 02:34:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:15,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:15,685 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:15,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:34:15,686 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:15,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1808888350, now seen corresponding path program 1 times [2021-12-16 02:34:15,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:15,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346595551] [2021-12-16 02:34:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:15,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:15,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:15,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346595551] [2021-12-16 02:34:15,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346595551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:15,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:15,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:15,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416923546] [2021-12-16 02:34:15,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:15,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:15,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:15,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:15,788 INFO L87 Difference]: Start difference. First operand 3246 states and 4196 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:17,685 INFO L93 Difference]: Finished difference Result 4403 states and 6036 transitions. [2021-12-16 02:34:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:17,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:17,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:17,703 INFO L225 Difference]: With dead ends: 4403 [2021-12-16 02:34:17,703 INFO L226 Difference]: Without dead ends: 3957 [2021-12-16 02:34:17,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:34:17,708 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 1075 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 2137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:17,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 2219 Invalid, 2137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:34:17,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2021-12-16 02:34:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3666. [2021-12-16 02:34:17,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 2943 states have (on average 1.3183826027862726) internal successors, (3880), 2990 states have internal predecessors, (3880), 405 states have call successors, (405), 246 states have call predecessors, (405), 316 states have return successors, (564), 435 states have call predecessors, (564), 401 states have call successors, (564) [2021-12-16 02:34:17,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 4849 transitions. [2021-12-16 02:34:17,918 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 4849 transitions. Word has length 113 [2021-12-16 02:34:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:17,918 INFO L470 AbstractCegarLoop]: Abstraction has 3666 states and 4849 transitions. [2021-12-16 02:34:17,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 4849 transitions. [2021-12-16 02:34:17,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:17,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:17,922 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:17,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:34:17,922 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:17,923 INFO L85 PathProgramCache]: Analyzing trace with hash 189913436, now seen corresponding path program 1 times [2021-12-16 02:34:17,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:17,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714557601] [2021-12-16 02:34:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:17,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:18,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:18,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714557601] [2021-12-16 02:34:18,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714557601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:18,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:18,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:18,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122828997] [2021-12-16 02:34:18,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:18,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:18,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:18,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:18,015 INFO L87 Difference]: Start difference. First operand 3666 states and 4849 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:19,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:19,104 INFO L93 Difference]: Finished difference Result 4828 states and 6712 transitions. [2021-12-16 02:34:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:19,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:19,118 INFO L225 Difference]: With dead ends: 4828 [2021-12-16 02:34:19,118 INFO L226 Difference]: Without dead ends: 3960 [2021-12-16 02:34:19,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:19,123 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 878 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:19,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 1332 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 02:34:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3960 states. [2021-12-16 02:34:19,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3960 to 3666. [2021-12-16 02:34:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 2943 states have (on average 1.3166836561331974) internal successors, (3875), 2990 states have internal predecessors, (3875), 405 states have call successors, (405), 246 states have call predecessors, (405), 316 states have return successors, (564), 435 states have call predecessors, (564), 401 states have call successors, (564) [2021-12-16 02:34:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 4844 transitions. [2021-12-16 02:34:19,354 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 4844 transitions. Word has length 113 [2021-12-16 02:34:19,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:19,354 INFO L470 AbstractCegarLoop]: Abstraction has 3666 states and 4844 transitions. [2021-12-16 02:34:19,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:19,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 4844 transitions. [2021-12-16 02:34:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:19,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:19,357 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:19,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:34:19,357 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash -693595554, now seen corresponding path program 1 times [2021-12-16 02:34:19,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:19,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211759805] [2021-12-16 02:34:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:19,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:19,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:19,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211759805] [2021-12-16 02:34:19,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211759805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:19,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:19,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:19,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166172013] [2021-12-16 02:34:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:19,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:19,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:19,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:19,458 INFO L87 Difference]: Start difference. First operand 3666 states and 4844 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:21,268 INFO L93 Difference]: Finished difference Result 5912 states and 8391 transitions. [2021-12-16 02:34:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:21,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:21,295 INFO L225 Difference]: With dead ends: 5912 [2021-12-16 02:34:21,296 INFO L226 Difference]: Without dead ends: 5046 [2021-12-16 02:34:21,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:34:21,301 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 1071 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 2209 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:21,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 2209 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:34:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5046 states. [2021-12-16 02:34:21,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5046 to 4511. [2021-12-16 02:34:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4511 states, 3700 states have (on average 1.3627027027027028) internal successors, (5042), 3751 states have internal predecessors, (5042), 465 states have call successors, (465), 270 states have call predecessors, (465), 344 states have return successors, (650), 499 states have call predecessors, (650), 461 states have call successors, (650) [2021-12-16 02:34:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 6157 transitions. [2021-12-16 02:34:21,575 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 6157 transitions. Word has length 113 [2021-12-16 02:34:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:21,575 INFO L470 AbstractCegarLoop]: Abstraction has 4511 states and 6157 transitions. [2021-12-16 02:34:21,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:21,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 6157 transitions. [2021-12-16 02:34:21,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:21,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:21,579 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:21,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:34:21,579 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash -722095844, now seen corresponding path program 1 times [2021-12-16 02:34:21,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:21,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895227301] [2021-12-16 02:34:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:21,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:21,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:21,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895227301] [2021-12-16 02:34:21,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895227301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:21,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:21,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:21,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433206457] [2021-12-16 02:34:21,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:21,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:21,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:21,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:21,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:21,675 INFO L87 Difference]: Start difference. First operand 4511 states and 6157 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:22,819 INFO L93 Difference]: Finished difference Result 6777 states and 9769 transitions. [2021-12-16 02:34:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:22,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:22,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:22,834 INFO L225 Difference]: With dead ends: 6777 [2021-12-16 02:34:22,835 INFO L226 Difference]: Without dead ends: 5064 [2021-12-16 02:34:22,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:22,843 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 877 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:22,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 1325 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 02:34:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2021-12-16 02:34:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 4511. [2021-12-16 02:34:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4511 states, 3700 states have (on average 1.3602702702702703) internal successors, (5033), 3751 states have internal predecessors, (5033), 465 states have call successors, (465), 270 states have call predecessors, (465), 344 states have return successors, (650), 499 states have call predecessors, (650), 461 states have call successors, (650) [2021-12-16 02:34:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4511 states to 4511 states and 6148 transitions. [2021-12-16 02:34:23,100 INFO L78 Accepts]: Start accepts. Automaton has 4511 states and 6148 transitions. Word has length 113 [2021-12-16 02:34:23,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:23,100 INFO L470 AbstractCegarLoop]: Abstraction has 4511 states and 6148 transitions. [2021-12-16 02:34:23,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4511 states and 6148 transitions. [2021-12-16 02:34:23,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:23,104 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:23,104 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:23,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:34:23,104 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:23,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:23,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1632289438, now seen corresponding path program 1 times [2021-12-16 02:34:23,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:23,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104779692] [2021-12-16 02:34:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:23,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:23,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:23,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104779692] [2021-12-16 02:34:23,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104779692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:23,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:23,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:23,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928482874] [2021-12-16 02:34:23,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:23,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:23,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:23,212 INFO L87 Difference]: Start difference. First operand 4511 states and 6148 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:25,051 INFO L93 Difference]: Finished difference Result 8927 states and 13092 transitions. [2021-12-16 02:34:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:25,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:25,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:25,073 INFO L225 Difference]: With dead ends: 8927 [2021-12-16 02:34:25,073 INFO L226 Difference]: Without dead ends: 7216 [2021-12-16 02:34:25,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:34:25,082 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1068 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:25,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 2200 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 02:34:25,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7216 states. [2021-12-16 02:34:25,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7216 to 6215. [2021-12-16 02:34:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6215 states, 5228 states have (on average 1.4108645753634277) internal successors, (7376), 5287 states have internal predecessors, (7376), 585 states have call successors, (585), 318 states have call predecessors, (585), 400 states have return successors, (840), 627 states have call predecessors, (840), 581 states have call successors, (840) [2021-12-16 02:34:25,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 8801 transitions. [2021-12-16 02:34:25,404 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 8801 transitions. Word has length 113 [2021-12-16 02:34:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:25,405 INFO L470 AbstractCegarLoop]: Abstraction has 6215 states and 8801 transitions. [2021-12-16 02:34:25,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 8801 transitions. [2021-12-16 02:34:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:25,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:25,409 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:25,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:34:25,410 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:25,410 INFO L85 PathProgramCache]: Analyzing trace with hash -785614628, now seen corresponding path program 1 times [2021-12-16 02:34:25,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:25,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502664320] [2021-12-16 02:34:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:25,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:25,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:25,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:25,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:25,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:25,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:25,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502664320] [2021-12-16 02:34:25,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502664320] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:25,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:25,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:25,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178303407] [2021-12-16 02:34:25,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:25,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:25,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:25,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:25,493 INFO L87 Difference]: Start difference. First operand 6215 states and 8801 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:26,625 INFO L93 Difference]: Finished difference Result 10671 states and 15892 transitions. [2021-12-16 02:34:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:26,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:26,643 INFO L225 Difference]: With dead ends: 10671 [2021-12-16 02:34:26,643 INFO L226 Difference]: Without dead ends: 7254 [2021-12-16 02:34:26,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:26,656 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 876 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:26,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 1314 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 02:34:26,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7254 states. [2021-12-16 02:34:27,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7254 to 6215. [2021-12-16 02:34:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6215 states, 5228 states have (on average 1.4076128538638102) internal successors, (7359), 5287 states have internal predecessors, (7359), 585 states have call successors, (585), 318 states have call predecessors, (585), 400 states have return successors, (840), 627 states have call predecessors, (840), 581 states have call successors, (840) [2021-12-16 02:34:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 8784 transitions. [2021-12-16 02:34:27,051 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 8784 transitions. Word has length 113 [2021-12-16 02:34:27,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:27,051 INFO L470 AbstractCegarLoop]: Abstraction has 6215 states and 8784 transitions. [2021-12-16 02:34:27,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:27,052 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 8784 transitions. [2021-12-16 02:34:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:27,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:27,057 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:27,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:34:27,057 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:27,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:27,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1556348194, now seen corresponding path program 1 times [2021-12-16 02:34:27,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:27,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719595459] [2021-12-16 02:34:27,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:27,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:27,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:27,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:27,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:27,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719595459] [2021-12-16 02:34:27,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719595459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:27,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:27,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:27,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74116941] [2021-12-16 02:34:27,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:27,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:27,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:27,141 INFO L87 Difference]: Start difference. First operand 6215 states and 8784 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:28,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:28,356 INFO L93 Difference]: Finished difference Result 10639 states and 15779 transitions. [2021-12-16 02:34:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:28,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:28,376 INFO L225 Difference]: With dead ends: 10639 [2021-12-16 02:34:28,376 INFO L226 Difference]: Without dead ends: 7222 [2021-12-16 02:34:28,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:28,387 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 891 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:28,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 1297 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:34:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7222 states. [2021-12-16 02:34:28,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7222 to 6215. [2021-12-16 02:34:28,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6215 states, 5228 states have (on average 1.404361132364193) internal successors, (7342), 5287 states have internal predecessors, (7342), 585 states have call successors, (585), 318 states have call predecessors, (585), 400 states have return successors, (840), 627 states have call predecessors, (840), 581 states have call successors, (840) [2021-12-16 02:34:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 8767 transitions. [2021-12-16 02:34:28,758 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 8767 transitions. Word has length 113 [2021-12-16 02:34:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:28,758 INFO L470 AbstractCegarLoop]: Abstraction has 6215 states and 8767 transitions. [2021-12-16 02:34:28,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 8767 transitions. [2021-12-16 02:34:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:28,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:28,763 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:28,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 02:34:28,763 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:28,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:28,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2142624416, now seen corresponding path program 1 times [2021-12-16 02:34:28,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:28,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479633565] [2021-12-16 02:34:28,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:28,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:28,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:28,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479633565] [2021-12-16 02:34:28,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479633565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:28,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:28,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:28,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613471638] [2021-12-16 02:34:28,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:28,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:28,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:28,859 INFO L87 Difference]: Start difference. First operand 6215 states and 8767 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:30,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:30,906 INFO L93 Difference]: Finished difference Result 15789 states and 23711 transitions. [2021-12-16 02:34:30,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:34:30,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:30,943 INFO L225 Difference]: With dead ends: 15789 [2021-12-16 02:34:30,944 INFO L226 Difference]: Without dead ends: 12374 [2021-12-16 02:34:30,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:34:30,959 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 1211 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:30,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 2168 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 02:34:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12374 states. [2021-12-16 02:34:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12374 to 9637. [2021-12-16 02:34:31,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9637 states, 8314 states have (on average 1.4492422420014432) internal successors, (12049), 8389 states have internal predecessors, (12049), 809 states have call successors, (809), 414 states have call predecessors, (809), 512 states have return successors, (1258), 867 states have call predecessors, (1258), 805 states have call successors, (1258) [2021-12-16 02:34:31,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9637 states to 9637 states and 14116 transitions. [2021-12-16 02:34:31,598 INFO L78 Accepts]: Start accepts. Automaton has 9637 states and 14116 transitions. Word has length 113 [2021-12-16 02:34:31,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:31,598 INFO L470 AbstractCegarLoop]: Abstraction has 9637 states and 14116 transitions. [2021-12-16 02:34:31,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 9637 states and 14116 transitions. [2021-12-16 02:34:31,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:31,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:31,606 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:31,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 02:34:31,606 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:31,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:31,607 INFO L85 PathProgramCache]: Analyzing trace with hash 193768094, now seen corresponding path program 1 times [2021-12-16 02:34:31,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:31,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507880762] [2021-12-16 02:34:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:31,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:31,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:31,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507880762] [2021-12-16 02:34:31,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507880762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:31,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:31,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:31,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112150760] [2021-12-16 02:34:31,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:31,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:31,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:31,700 INFO L87 Difference]: Start difference. First operand 9637 states and 14116 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:33,961 INFO L93 Difference]: Finished difference Result 28151 states and 43216 transitions. [2021-12-16 02:34:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:34:33,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:33,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:34,031 INFO L225 Difference]: With dead ends: 28151 [2021-12-16 02:34:34,032 INFO L226 Difference]: Without dead ends: 21314 [2021-12-16 02:34:34,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:34:34,058 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 1173 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:34,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 2163 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:34:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21314 states. [2021-12-16 02:34:34,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21314 to 16465. [2021-12-16 02:34:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16465 states, 14486 states have (on average 1.4827419577523127) internal successors, (21479), 14593 states have internal predecessors, (21479), 1241 states have call successors, (1241), 606 states have call predecessors, (1241), 736 states have return successors, (2240), 1331 states have call predecessors, (2240), 1237 states have call successors, (2240) [2021-12-16 02:34:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16465 states to 16465 states and 24960 transitions. [2021-12-16 02:34:35,059 INFO L78 Accepts]: Start accepts. Automaton has 16465 states and 24960 transitions. Word has length 113 [2021-12-16 02:34:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:35,059 INFO L470 AbstractCegarLoop]: Abstraction has 16465 states and 24960 transitions. [2021-12-16 02:34:35,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:35,060 INFO L276 IsEmpty]: Start isEmpty. Operand 16465 states and 24960 transitions. [2021-12-16 02:34:35,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:35,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:35,071 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:35,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 02:34:35,071 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:35,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2070250912, now seen corresponding path program 1 times [2021-12-16 02:34:35,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:35,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451546425] [2021-12-16 02:34:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:35,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:35,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:35,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451546425] [2021-12-16 02:34:35,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451546425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:35,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:35,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:35,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099715927] [2021-12-16 02:34:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:35,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:35,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:35,158 INFO L87 Difference]: Start difference. First operand 16465 states and 24960 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:36,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:36,827 INFO L93 Difference]: Finished difference Result 33651 states and 52619 transitions. [2021-12-16 02:34:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:36,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:36,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:36,896 INFO L225 Difference]: With dead ends: 33651 [2021-12-16 02:34:36,897 INFO L226 Difference]: Without dead ends: 19984 [2021-12-16 02:34:36,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:36,926 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 873 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:36,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 1298 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:34:36,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19984 states. [2021-12-16 02:34:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19984 to 16465. [2021-12-16 02:34:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16465 states, 14486 states have (on average 1.4782548667679138) internal successors, (21414), 14593 states have internal predecessors, (21414), 1241 states have call successors, (1241), 606 states have call predecessors, (1241), 736 states have return successors, (2240), 1331 states have call predecessors, (2240), 1237 states have call successors, (2240) [2021-12-16 02:34:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16465 states to 16465 states and 24895 transitions. [2021-12-16 02:34:37,908 INFO L78 Accepts]: Start accepts. Automaton has 16465 states and 24895 transitions. Word has length 113 [2021-12-16 02:34:37,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:37,908 INFO L470 AbstractCegarLoop]: Abstraction has 16465 states and 24895 transitions. [2021-12-16 02:34:37,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 16465 states and 24895 transitions. [2021-12-16 02:34:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:37,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:37,919 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:37,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 02:34:37,919 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:37,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:37,920 INFO L85 PathProgramCache]: Analyzing trace with hash 191119966, now seen corresponding path program 1 times [2021-12-16 02:34:37,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:37,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628327987] [2021-12-16 02:34:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:37,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:37,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:38,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:38,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628327987] [2021-12-16 02:34:38,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628327987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:38,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:38,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:38,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931845136] [2021-12-16 02:34:38,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:38,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:38,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:38,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:38,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:38,006 INFO L87 Difference]: Start difference. First operand 16465 states and 24895 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:39,581 INFO L93 Difference]: Finished difference Result 33587 states and 52297 transitions. [2021-12-16 02:34:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:39,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:39,635 INFO L225 Difference]: With dead ends: 33587 [2021-12-16 02:34:39,636 INFO L226 Difference]: Without dead ends: 19920 [2021-12-16 02:34:39,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:34:39,668 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 871 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:39,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 1295 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:34:39,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19920 states. [2021-12-16 02:34:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19920 to 16465. [2021-12-16 02:34:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16465 states, 14486 states have (on average 1.473767775783515) internal successors, (21349), 14593 states have internal predecessors, (21349), 1241 states have call successors, (1241), 606 states have call predecessors, (1241), 736 states have return successors, (2240), 1331 states have call predecessors, (2240), 1237 states have call successors, (2240) [2021-12-16 02:34:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16465 states to 16465 states and 24830 transitions. [2021-12-16 02:34:40,819 INFO L78 Accepts]: Start accepts. Automaton has 16465 states and 24830 transitions. Word has length 113 [2021-12-16 02:34:40,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:40,820 INFO L470 AbstractCegarLoop]: Abstraction has 16465 states and 24830 transitions. [2021-12-16 02:34:40,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 16465 states and 24830 transitions. [2021-12-16 02:34:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:40,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:40,828 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:40,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 02:34:40,829 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1515976160, now seen corresponding path program 1 times [2021-12-16 02:34:40,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:40,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934361382] [2021-12-16 02:34:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:40,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:40,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:40,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:40,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934361382] [2021-12-16 02:34:40,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934361382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:40,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:40,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:40,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353764933] [2021-12-16 02:34:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:40,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:40,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:40,940 INFO L87 Difference]: Start difference. First operand 16465 states and 24830 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:43,807 INFO L93 Difference]: Finished difference Result 41201 states and 62707 transitions. [2021-12-16 02:34:43,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:34:43,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2021-12-16 02:34:43,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:43,897 INFO L225 Difference]: With dead ends: 41201 [2021-12-16 02:34:43,898 INFO L226 Difference]: Without dead ends: 27536 [2021-12-16 02:34:43,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-16 02:34:43,933 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 751 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:43,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 1822 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 02:34:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27536 states. [2021-12-16 02:34:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27536 to 16657. [2021-12-16 02:34:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16657 states, 14678 states have (on average 1.4675705136939639) internal successors, (21541), 14785 states have internal predecessors, (21541), 1241 states have call successors, (1241), 606 states have call predecessors, (1241), 736 states have return successors, (2240), 1331 states have call predecessors, (2240), 1237 states have call successors, (2240) [2021-12-16 02:34:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16657 states to 16657 states and 25022 transitions. [2021-12-16 02:34:44,985 INFO L78 Accepts]: Start accepts. Automaton has 16657 states and 25022 transitions. Word has length 113 [2021-12-16 02:34:44,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:44,985 INFO L470 AbstractCegarLoop]: Abstraction has 16657 states and 25022 transitions. [2021-12-16 02:34:44,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-16 02:34:44,986 INFO L276 IsEmpty]: Start isEmpty. Operand 16657 states and 25022 transitions. [2021-12-16 02:34:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-16 02:34:44,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:44,995 INFO L514 BasicCegarLoop]: 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] [2021-12-16 02:34:44,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 02:34:44,996 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:44,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1891768290, now seen corresponding path program 1 times [2021-12-16 02:34:44,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:44,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039372250] [2021-12-16 02:34:44,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:44,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 02:34:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 02:34:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 02:34:45,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 02:34:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:45,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:45,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039372250] [2021-12-16 02:34:45,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039372250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:45,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:45,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:45,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780904553] [2021-12-16 02:34:45,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:45,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:45,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:45,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:45,115 INFO L87 Difference]: Start difference. First operand 16657 states and 25022 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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)